KCNQ3

gene
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Also known as Kv7.3

Summary

KCNQ3 (potassium voltage-gated channel subfamily Q member 3, HGNC:6297) is a protein-coding gene on chromosome 8q24.22, encoding Potassium voltage-gated channel subfamily KQT member 3 (O43525). Pore-forming subunit of the voltage-gated potassium (Kv) M-channel which is responsible for the M-current, a key controller of neuronal excitability.

This gene encodes a protein that functions in the regulation of neuronal excitability. The encoded protein forms an M-channel by associating with the products of the related KCNQ2 or KCNQ5 genes, which both encode integral membrane proteins. M-channel currents are inhibited by M1 muscarinic acetylcholine receptors and are activated by retigabine, a novel anti-convulsant drug. Defects in this gene are a cause of benign familial neonatal convulsions type 2 (BFNC2), also known as epilepsy, benign neonatal type 2 (EBN2). Alternative splicing of this gene results in multiple transcript variants.

Source: NCBI Gene 3786 — RefSeq curated summary.

At a glance

  • Gene–disease (curated): complex neurodevelopmental disorder (Definitive, ClinGen) — +5 more curated relationships
  • GWAS associations: 5
  • Clinical variants (ClinVar): 1,489 total — 26 pathogenic, 25 likely-pathogenic
  • Phenotypes (HPO): 54
  • Druggable target: yes — 3 molecules with ChEMBL bioactivity
  • MANE Select transcript: NM_004519

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:6297
Approved symbolKCNQ3
Namepotassium voltage-gated channel subfamily Q member 3
Location8q24.22
Locus typegene with protein product
StatusApproved
AliasesKv7.3
Ensembl geneENSG00000184156
Ensembl biotypeprotein_coding
OMIM602232
Entrez3786

Gene structure

Transcript identifiers

Ensembl transcripts: 7 — 4 protein_coding, 2 nonsense_mediated_decay, 1 retained_intron

ENST00000388996, ENST00000519445, ENST00000519589, ENST00000521134, ENST00000638588, ENST00000639358, ENST00000639496

RefSeq mRNA: 2 — MANE Select: NM_004519 NM_001204824, NM_004519

CCDS: CCDS34943, CCDS56554

Canonical transcript exons

ENST00000388996 — 15 exons

ExonStartEnd
ENSE00001292248132140076132140178
ENSE00001306403132480147132481095
ENSE00001307569132141129132141331
ENSE00001327355132120861132129996
ENSE00003511798132175453132175608
ENSE00003530514132174239132174349
ENSE00003534966132132180132132264
ENSE00003546076132184241132184367
ENSE00003585982132134290132134388
ENSE00003591610132180157132180329
ENSE00003592914132137885132138016
ENSE00003634278132163468132163494
ENSE00003663352132186091132186181
ENSE00003677885132172598132172693
ENSE00003687834132170334132170428

Expression profiles

Bgee: expression breadth ubiquitous, 180 present calls, max score 96.26.

FANTOM5 (CAGE): breadth broad, TPM avg 1.4851 / max 49.1324, expressed in 370 samples.

FANTOM5 promoters (5 alternative TSS)

Promoter IDTPM avgSamples expressed
950550.5572159
950540.5294155
950480.3041132
950490.088634
950500.00582

Top tissues by expression

282 total, by Bgee expression score (0-100, higher = more expressed):

TissueAnatomy IDExpression scoreQuality
ganglionic eminenceUBERON:000402396.26gold quality
lateral nuclear group of thalamusUBERON:000273696.24gold quality
Brodmann (1909) area 23UBERON:001355494.19gold quality
substantia nigra pars compactaUBERON:000196593.22gold quality
endothelial cellCL:000011593.00gold quality
ponsUBERON:000098892.93gold quality
middle temporal gyrusUBERON:000277192.92gold quality
postcentral gyrusUBERON:000258191.62gold quality
cortical plateUBERON:000534391.55gold quality
substantia nigra pars reticulataUBERON:000196691.42gold quality
parietal lobeUBERON:000187291.24gold quality
entorhinal cortexUBERON:000272891.07gold quality
superior frontal gyrusUBERON:000266191.03gold quality
superior vestibular nucleusUBERON:000722788.34gold quality
primary visual cortexUBERON:000243688.25gold quality
occipital lobeUBERON:000202188.12gold quality
prefrontal cortexUBERON:000045187.44gold quality
dorsal plus ventral thalamusUBERON:000189786.59gold quality
temporal lobeUBERON:000187186.07gold quality
frontal cortexUBERON:000187085.45gold quality
neocortexUBERON:000195085.32gold quality
ventral tegmental areaUBERON:000269185.32gold quality
dorsolateral prefrontal cortexUBERON:000983484.89gold quality
cerebral cortexUBERON:000095684.86gold quality
nucleus accumbensUBERON:000188284.53gold quality
telencephalonUBERON:000189384.31gold quality
cingulate cortexUBERON:000302783.83gold quality
anterior cingulate cortexUBERON:000983583.66gold quality
right frontal lobeUBERON:000281083.19gold quality
caudate nucleusUBERON:000187383.05gold quality

Single-cell (SCXA)

Detected in 3 experiment(s), a significant marker in 3.

ExperimentMarker?Max mean expression
E-HCAD-35yes32.59
E-HCAD-25yes15.00
E-ANND-3yes8.95

Regulation

Is transcription factor: no

Upstream regulators (CollecTRI, top): REST, SP1

miRNA regulators (miRDB)

329 targeting KCNQ3, top 30 by miRDB confidence (max_score; target_count = how many genes the miRNA targets in total — lower means more specific):

miRNAMax scoreAvg scoremiRNA target_count
HSA-MIR-6867-5P100.0082.213464
HSA-MIR-1277-5P100.0073.955056
HSA-MIR-200B-3P100.0073.312693
HSA-MIR-200C-3P100.0073.352685
HSA-MIR-429100.0073.442698
HSA-MIR-1252-5P100.0069.802774
HSA-MIR-340-5P100.0072.504437
HSA-MIR-190A-3P100.0080.355520
HSA-MIR-6129100.0066.462080
HSA-MIR-4476100.0068.182030
HSA-MIR-9-5P100.0072.282361
HSA-MIR-5692A100.0074.406850
HSA-MIR-6876-5P100.0067.682126
HSA-MIR-4510100.0066.602050
HSA-MIR-6127100.0066.762188
HSA-MIR-6130100.0066.692012
HSA-MIR-6133100.0066.482064
HSA-MIR-6833-3P100.0070.633197
HSA-MIR-4776-3P100.0068.731340
HSA-MIR-3120-5P100.0065.56965
HSA-MIR-513A-5P100.0069.772465
HSA-MIR-4283100.0066.422097
HSA-MIR-4789-3P99.9970.752484
HSA-MIR-548C-3P99.9974.017587
HSA-MIR-6870-5P99.9968.552115
HSA-MIR-428299.9975.366408
HSA-MIR-569699.9872.364487
HSA-MIR-480399.9871.993117
HSA-MIR-548N99.9871.944170
HSA-MIR-4482-3P99.9872.503147

Literature-anchored findings (GeneRIF, showing 40)

  • A cytoplasmic carboxy-terminal subunit interaction domain (sid) suffices to transfer assembly properties between KCNQ3 and KCNQ1. (PMID:12524525)
  • specific parts of the C-terminus enable the interaction between KCNQ2 and KCNQ3 channels and that different parts of the KCNQ3 C-terminus are important for regulating current amplitude (PMID:12640002)
  • Coexpressed KCNQ2 plus KCNQ3 cDNAs generate channels with 1:1 (KCNQ2:KCNQ3) stoichiometry in CHO cells and that native M channels in SCG neurons adopt the same conformation during development (PMID:12832524)
  • There may be a genetic contribution of this gene in juvenile myoclonic epilepsy in a South Indian population. (PMID:12928862)
  • Src associates with KCNQ2-5 subunits but phosphorylates only KCNQ3-5. (PMID:15304482)
  • After KCNQ2/3 heteromerization, current levels can augment as much as 10-fold, and we have discovered that there are three processes underlying this potentiation. (PMID:15483133)
  • the KCNQ2 mutation is responsible for the benign familial neonatal convulsion phenotype, possibly because of haplo-insufficiency, whereas the KCNQ3 variant is functionally silent (PMID:16235065)
  • Mutagenesis and electrophysiological studies of the second site, located in the S4-S5 intracellular loop of all KCNQ subunits, reveal a mechanism of channel inhibition (PMID:16319223)
  • the diacylglycerol produced during activation of phospholipase c, any activation of protein kinase C that it may stimulate, and downstream products of its metabolism are not essential players in the acute muscarinic modulation of KCNQ2/3 channels (PMID:16721610)
  • Several BFNC mutations of KCNQ2 and KCNQ3 disrupt surface expression or polarized surface distribution of KCNQ channels, thereby revealing impaired targeting of KCNQ channels to axonal surfaces as a benign familial neonatal convulsions (BFNC) etiology. (PMID:16735477)
  • depletion of phosphatidylinositol 4,5-bisphosphate suffices to suppress KCNQ current fully, and other second messengers are not needed (PMID:16990515)
  • ICA-27243 is a novel and selective KCNQ3 potassium channel activator. (PMID:18089837)
  • The expression of KCNQ3 increased in late fetal life to infancy in brain. (PMID:18166285)
  • This study identified a novel missense mutation of KCNQ3, c.988C>T located within exon 6. c.988C>T led to the substitution Cys for Arg in amino acid position 330 (p.R330C) in KCNQ3 potassium channel. (PMID:18249525)
  • A three-dimensional homology model in the W309R mutant indicated that the R side chain of pore helices is too far from the Y side chain of the selectivity filter to interact via hydrogen bonds with each other and stabilize the pore structure. (PMID:18425618)
  • Sequence variations of the KCNQ2 (and KCNQ3)genes may contribute to the etiology of common idiopathic epilepsy syndromes. (PMID:18625963)
  • among the allowed assembly conformations are KCNQ3/4 and KCNQ4/5 heteromers. (PMID:18786918)
  • most wild-type channels are functionally silent, with rearrangements of the pore-loop architecture induced by the presence of a hydroxyl-containing residue at the 315 position “unlocking” the channels into a conductive conformation (PMID:18790849)
  • mutations in the SCN1A gene are differentially involved in the pathogenesis of and sequence variations of the KCNQ2 and KCNQ3 genes may contribute to the etiology of rare and common idiopathic epilepsy syndromes [review] (PMID:19464834)
  • This study reported that the presence of this uncommon residue at position 315 has a strong impact on the stability of the homotetramers and on channel trafficking. (PMID:20610766)
  • Data show that KCNQ3 and KCNE5 mRNA expressions were significantly upregulated in preeclampsia. (PMID:21730298)
  • Different structural determinants, identified at the N and C termini of KCNQ3, prevent the effects of syntaxin 1A and calmodulin, respectively. (PMID:21976501)
  • constitutive tethering of calmodulin is not required for Kv7 channel function (PMID:21980481)
  • the Kv7.2-Kv7.3 heteromer assembles as a tetramer with a predominantly 2:2 subunit stoichiometry and with a random subunit arrangement. (PMID:22334706)
  • This study demonistrated that benign neonatal sleep myoclonus can show autosomal dominant inheritance but not allelic to KCNQ3. (PMID:22447848)
  • A medium-throughput assay reliably detects changes in the biophysical properties of three classes of KCNQ2/3 channels and peak current amplitude and therefore may serve as a reliable assay to evaluate KCNQ2/3 openers and blockers. (PMID:23002961)
  • the single KCNQ channel in Drosophila (dKCNQ) has similar electrophysiological properties to neuronal KCNQ2/3 (PMID:23209695)
  • KCNQ3 mutations might be involved in families with infantile seizures. (PMID:23360469)
  • We described clinical, genetic, and functional data from 17 families with a diagnosis of benign familial neonatal epilepsy caused by KCNQ2 or KCNQ3 mutations and we showed that some mutations lead to a reduction of Q2 channel regulation by syntaxin-1A. (PMID:24375629)
  • We monitored KCNQ2/3 channel currents and translocation of PHPLCdelta1 domains as real-time indicators of PM PI(4,5)P2, and translocation of PHOSH2x2, and PHOSH1 domains as indicators of plasma membrane and Golgi PI(4)P, respectively. (PMID:24843134)
  • In bipolar disorder patients’ prefrontal cortex, Kcnq3 expression was decreased, DNA methylation was decreased, and Kcnq3 mRNA was decreased compared to controls. (PMID:25041603)
  • the clinical and EEG features of this patient further on expand the phenotypic variability of KCNQ3 gene mutations (PMID:25278462)
  • mutations in KCNQ3, similarly to KCNQ2, can be found in patients with more severe phenotypes including intellectual disability (PMID:25524373)
  • the present results suggest that gain-of-function mutations in Kv7.2/3 currents may cause human epilepsy with a severe clinical course (PMID:25740509)
  • Phosphorylation of KCNQ2 and KCNQ3 anchor domains by protein kinase CK2 augments binding to AnkG. (PMID:25998125)
  • a structural mechanism for the gating of the Kv7.3 PM and for the site of action of RTG as a Kv7.2/Kv7.3 K(+) current activator. (PMID:26627826)
  • Carboxyl terminus helix C-D linker residues play a role in KCNQ3 current amplitudes by controlling the exit of the KCNQ3 channel from the endoplasmic reticulum. (PMID:26692086)
  • Tannic acid activates Kv7.4 and Kv7.3/7.5 K(+) channels resulting in vasodilation. (PMID:26969140)
  • USP36 actions extend beyond TrkA because the presence of USP36 interferes with Nedd4-2-dependent Kv7.2/3 channel regulation. (PMID:27445338)
  • In the present work, a pharmacophore-based 3D-QSAR model was generated for a series of N-pyridyl and pyrimidine benzamides possessing KCNQ2/Q3 opening activity. The pharmacophore model generated contains one hydrogen bond donor (D), one hydrophobic (H), and two aromatic rings (R). They are the crucial molecular write-up detailing predicted binding efficacy of high affinity and low affinity ligands for KCNQ2/Q3 opening a (PMID:27607834)

Cross-species orthologs

3 orthologs

OrganismSymbolGene ID
danio_reriokcnq3ENSDARG00000060085
mus_musculusKcnq3ENSMUSG00000056258
rattus_norvegicusKcnq3ENSRNOG00000005206

Paralogs (31): KCNG1 (ENSG00000026559), KCNQ1 (ENSG00000053918), KCNQ2 (ENSG00000075043), KCND1 (ENSG00000102057), KCNA7 (ENSG00000104848), KCNA1 (ENSG00000111262), KCNC4 (ENSG00000116396), KCNQ4 (ENSG00000117013), KCNS1 (ENSG00000124134), KCNC1 (ENSG00000129159), KCNA5 (ENSG00000130037), KCNC3 (ENSG00000131398), KCNA10 (ENSG00000143105), KCNA6 (ENSG00000151079), KCNS2 (ENSG00000156486), KCNB1 (ENSG00000158445), KCNF1 (ENSG00000162975), KCNV1 (ENSG00000164794), KCNC2 (ENSG00000166006), KCNV2 (ENSG00000168263), KCNG4 (ENSG00000168418), KCNS3 (ENSG00000170745), KCNG3 (ENSG00000171126), KCND3 (ENSG00000171385), KCNA3 (ENSG00000177272), KCNA2 (ENSG00000177301), KCNG2 (ENSG00000178342), KCNA4 (ENSG00000182255), KCNB2 (ENSG00000182674), KCND2 (ENSG00000184408), KCNQ5 (ENSG00000185760)

Protein

Protein identifiers

Potassium voltage-gated channel subfamily KQT member 3O43525 (reviewed: O43525)

Alternative names: KQT-like 3, Potassium channel subunit alpha KvLQT3, Voltage-gated potassium channel subunit Kv7.3

All UniProt accessions (5): A0A1W2PNZ2, A0A1W2PQ71, A0A1W2PRN8, E7ET42, O43525

UniProt curated annotations — full annotation on UniProt →

Function. Pore-forming subunit of the voltage-gated potassium (Kv) M-channel which is responsible for the M-current, a key controller of neuronal excitability. M-channel is composed of pore-forming subunits KCNQ2 and KCNQ3 assembled as heterotetramers. The native M-current has a slowly activating and deactivating potassium conductance which plays a critical role in determining the subthreshold electrical excitability of neurons as well as the responsiveness to synaptic inputs. M-channel is selectively permeable in vitro to other cations besides potassium, in decreasing order of affinity K(+) > Rb(+) > Cs(+) > Na(+). M-channel association with SLC5A3/SMIT1 alters channel ion selectivity, increasing Na(+) and Cs(+) permeation relative to K(+). Suppressed by activation of M1 muscarinic acetylcholine receptors. KCNQ3 also associates with KCNQ5 to form a functional channel in vitro and may also contribute to the M-current in brain.

Subunit / interactions. Heterotetramer with KCNQ2; forms heterotetrameric native M-channel responsible for the M-current. Interacts with calmodulin; the interaction is calcium-independent, constitutive and participates in the proper assembly of a functional M-channel. Heteromultimer with KCNQ5. May associate with KCNE2. Interacts with IQCJ-SCHIP1. Interacts (via the pore module) with SLC5A3/SMIT1; forms a coregulatory complex that alters ion selectivity, voltage dependence and gating kinetics of the channel.

Subcellular location. Cell membrane.

Tissue specificity. Predominantly expressed in brain.

Post-translational modifications. KCNQ2/KCNQ3 are ubiquitinated by NEDD4L. Ubiquitination leads to protein degradation. Degradation induced by NEDD4L is inhibited by USP36.

Disease relevance. Seizures, benign familial neonatal 2 (BFNS2) [MIM:121201] A disorder characterized by clusters of seizures occurring in the first days of life. Most patients have spontaneous remission by 12 months of age and show normal psychomotor development. The disorder is distinguished from benign familial infantile seizures by an earlier age at onset. The disease is caused by variants affecting the gene represented in this entry. Defects in KCNQ3 may be involved in epileptic disorders. These are characterized by paroxysmal transient disturbances of the electrical activity of the brain that may be manifested as episodic impairment or loss of consciousness, abnormal motor phenomena, psychic or sensory disturbances, or perturbation of the autonomic nervous system.

Activity regulation. Phosphatidylinositol-4,5-bisphosphate (PIP2) potentiates the activation of KCNQ channels by enhancing the electro-mechanical coupling of the voltage-sensing domain (VSD) and the pore-forming domain (PD). In the closed state of the channel, PIP2 is anchored at the S2-S3 loop; upon channel activation, PIP2 interacts with the S4-S5 linker and is involved in channel gating. Calcium suppresses KCNQ2-KCNQ3 channel currents, with calcium-bound calmodulin inducing a change in channel configuration which leads to the reduction of channel affinity for PIP2 and subsequent current suppression. M-channel is activated by the anticonvulsant retigabine.

Domain organisation. Each subunit contains six transmembrane segments (S1-S6) with S1-S4 forming one voltage sensing domain (VSD) and S5-S6 contributing to form one quarter of an interlocking pore-forming domain (PD). The S4-S5 linker preferentially interacts with PIP2 in the open-state KCNQ2 channel, whereas the S2-S3 loop interacts with PIP2 in the closed state. The intracellular C-terminal domain is bound constitutively by calmodulin (CaM). This domain plays key functions in channel tetramerization, trafficking, and gating.

Similarity. Belongs to the potassium channel family. KQT (TC 1.A.1.15) subfamily. Kv7.3/KCNQ3 sub-subfamily.

Isoforms (2)

UniProt IDNamesCanonical?
O43525-11yes
O43525-22

RefSeq proteins (2): NP_001191753, NP_004510* (*=MANE)

Domains & families (InterPro)

IDNameType
IPR003937K_chnl_volt-dep_KCNQFamily
IPR003948K_chnl_volt-dep_KCNQ3Family
IPR005821Ion_trans_domDomain
IPR013821K_chnl_volt-dep_KCNQ_CDomain
IPR020969Ankyrin-G_BSBinding_site

Pfam: PF00520, PF03520, PF11956

Catalyzed reactions (Rhea), 4 shown:

  • K(+)(in) = K(+)(out) (RHEA:29463)
  • Na(+)(in) = Na(+)(out) (RHEA:34963)
  • Rb(+)(in) = Rb(+)(out) (RHEA:78547)
  • Cs(+)(in) = Cs(+)(out) (RHEA:78555)

UniProt features (47 total): topological domain 8, sequence variant 8, transmembrane region 6, region of interest 4, compositionally biased region 4, binding site 3, mutagenesis site 3, modified residue 2, splice variant 2, sequence conflict 2, helix 2, chain 1, intramembrane region 1, short sequence motif 1

Structure

Experimental structures (PDB)

16 structures.

PDBMethodResolution (Å)
5J03X-RAY DIFFRACTION2
22BJELECTRON MICROSCOPY2.4
22BFELECTRON MICROSCOPY2.5
22BGELECTRON MICROSCOPY2.5
22BEELECTRON MICROSCOPY2.6
22BIELECTRON MICROSCOPY2.6
22AZELECTRON MICROSCOPY2.7
22BKELECTRON MICROSCOPY2.7
22BCELECTRON MICROSCOPY2.8
22BHELECTRON MICROSCOPY2.8
22RJELECTRON MICROSCOPY2.82
22BAELECTRON MICROSCOPY2.9
22RQELECTRON MICROSCOPY2.9
22BDELECTRON MICROSCOPY3
9X5JELECTRON MICROSCOPY3.05
9X65ELECTRON MICROSCOPY3.19

Predicted structure (AlphaFold)

ModelpLDDTFraction very-high
AF-O43525-F157.500.15

Functional residue map

Curated UniProt residues grouped by drug-discovery relevance — catalytic, ligand-binding, modification, and mutation-validated positions. Source: UniProtKB sequence features.

Ligand- & substrate-binding residues (3): 243; 259; 366

Post-translational modifications (2): 81, 246

Mutagenesis-validated functional residues (3):

PositionPhenotype
246no effect on current or expression.
246abolishes currents without reducing channel protein expression.
318>50% reduction of wt heteromeric current; ratio of 1:1 and 1:1:2.

Function

Pathways and Gene Ontology

Reactome pathways

8 pathways

IDPathway
R-HSA-1296072Voltage gated Potassium channels
R-HSA-445095Interaction between L1 and Ankyrins
R-HSA-112316Neuronal System
R-HSA-1266738Developmental Biology
R-HSA-1296071Potassium Channels
R-HSA-373760L1CAM interactions
R-HSA-422475Axon guidance
R-HSA-9675108Nervous system development

MSigDB gene sets: 332 (showing top): GOBP_POTASSIUM_ION_TRANSPORT, GOBP_MEMBRANE_DEPOLARIZATION, BENPORATH_ES_WITH_H3K27ME3, MODULE_274, GOBP_BEHAVIOR, REACTOME_VOLTAGE_GATED_POTASSIUM_CHANNELS, GOBP_INTRACELLULAR_PROTEIN_TRANSPORT, GOBP_SENSORY_PERCEPTION_OF_MECHANICAL_STIMULUS, REACTOME_POTASSIUM_CHANNELS, ENK_UV_RESPONSE_KERATINOCYTE_UP, GOBP_NEURON_MATURATION, MODULE_45, MODULE_64, GOBP_PROTEIN_TARGETING, IVANOVA_HEMATOPOIESIS_LATE_PROGENITOR

GO Biological Process (34): protein targeting (GO:0006605), protein import into nucleus (GO:0006606), exocytosis (GO:0006887), endocytosis (GO:0006897), chemical synaptic transmission (GO:0007268), sensory perception of sound (GO:0007605), gene expression (GO:0010467), response to auditory stimulus (GO:0010996), neuron remodeling (GO:0016322), neuronal action potential (GO:0019228), nerve development (GO:0021675), psychomotor behavior (GO:0036343), regulation of synaptic plasticity (GO:0048167), neuron apoptotic process (GO:0051402), mitochondrial depolarization (GO:0051882), membrane hyperpolarization (GO:0060081), cellular response to calcium ion (GO:0071277), cellular response to xenobiotic stimulus (GO:0071466), potassium ion transmembrane transport (GO:0071805), apoptosome assembly (GO:0097314), excitatory chemical synaptic transmission (GO:0098976), inhibitory chemical synaptic transmission (GO:0098977), action potential initiation (GO:0099610), regulation of action potential firing threshold (GO:0099611), substantia propria of cornea development (GO:1903701), monoatomic ion transport (GO:0006811), potassium ion transport (GO:0006813), response to mechanical stimulus (GO:0009612), protein transport (GO:0015031), neuron differentiation (GO:0030182), monoatomic ion transmembrane transport (GO:0034220), establishment of localization in cell (GO:0051649), transmembrane transport (GO:0055085), protein-containing complex assembly (GO:0065003)

GO Molecular Function (7): voltage-gated potassium channel activity (GO:0005249), calmodulin binding (GO:0005516), voltage-gated monoatomic cation channel activity (GO:0022843), monoatomic ion channel activity (GO:0005216), voltage-gated monoatomic ion channel activity (GO:0005244), potassium channel activity (GO:0005267), protein binding (GO:0005515)

GO Cellular Component (9): mitochondrion (GO:0005739), plasma membrane (GO:0005886), voltage-gated potassium channel complex (GO:0008076), cell surface (GO:0009986), node of Ranvier (GO:0033268), axon initial segment (GO:0043194), synapse (GO:0045202), membrane (GO:0016020), monoatomic ion channel complex (GO:0034702)

Reactome top-level categories

Rollup of top-6 pathways:

CategoryPathways
Potassium Channels1
L1CAM interactions1
Neuronal System1
Axon guidance1
Nervous system development1
Developmental Biology1

GO top-level categories

Rollup of top GO terms by namespace:

CategoryTerms
cellular anatomical structure4
vesicle-mediated transport2
monoatomic cation channel activity2
main axon2
establishment of protein localization1
intracellular protein transport1
protein localization to nucleus1
import into nucleus1
establishment of protein localization to organelle1
secretion by cell1
vesicle fusion to plasma membrane1
vesicle budding from membrane1
membrane invagination1
import into cell1
anterograde trans-synaptic signaling1
sensory perception of mechanical stimulus1
macromolecule biosynthetic process1
response to mechanical stimulus1
neuron maturation1
action potential1
transmission of nerve impulse1
nervous system development1
anatomical structure development1
motor behavior1
modulation of chemical synaptic transmission1
regulation of biological quality1
apoptotic process1
mitochondrion1
regulation of mitochondrial membrane potential1
membrane depolarization1
regulation of membrane potential1
response to calcium ion1
cellular response to metal ion1
response to xenobiotic stimulus1
cellular response to chemical stimulus1
potassium ion transport1
monoatomic cation transmembrane transport1
protein-containing complex assembly1
apoptotic signaling pathway1
potassium channel activity1

Protein interactions and networks

STRING

2622 interactions, top by confidence (×1000):

Protein AProtein BPartner UniProtScore
KCNQ3KCNQ5Q9NR82984
KCNQ3KCNQ2O43526984
KCNQ3ANK3Q12955883
KCNQ3KCNE1P15382867
KCNQ3CALM1P02593791
KCNQ3CALML3P27482754
KCNQ3CALML5Q9NZT1754
KCNQ3CALML6Q8TD86745
KCNQ3CALML4Q96GE6745
KCNQ3CHRNA4P43681734
KCNQ3SCN2AQ99250724
KCNQ3SCN1AP35498722
KCNQ3CSTBP04080675
KCNQ3SCN8AQ9UQD0667
KCNQ3KCNT1Q5JUK3635

IntAct

2 interactions, top by confidence:

ABTypeScore
KCNQ3AKT2psi-mi:“MI:0914”(association)0.350

BioGRID (41): KCNQ2 (Affinity Capture-Western), KCNQ5 (Affinity Capture-Western), KCNQ3 (Affinity Capture-Western), SRXN1 (Affinity Capture-MS), TRAPPC9 (Affinity Capture-MS), TRAPPC4 (Affinity Capture-MS), TRAPPC6B (Affinity Capture-MS), WDR73 (Affinity Capture-MS), TRAPPC10 (Affinity Capture-MS), AKT2 (Affinity Capture-MS), KCNQ3 (Affinity Capture-MS), KCNQ3 (Positive Genetic), KCNQ3 (Affinity Capture-Western), KCNQ2 (Affinity Capture-Western), KCNQ3 (Affinity Capture-Western)

ESM2 similar proteins: A6H8H5, B1WAZ8, O18868, O43525, O43526, O54928, O70344, O75159, O88866, O88943, O88944, O95279, P15385, P15387, P19024, P22462, P51787, P56696, P57058, Q03717, Q14721, Q14B80, Q3UUF8, Q4ZHA6, Q5JV73, Q61762, Q62897, Q63099, Q68UT7, Q76N89, Q8K3F6, Q8K4P8, Q92831, Q92953, Q95167, Q95L11, Q96PR1, Q9JHD1, Q9JK45, Q9JK96

Diamond homologs: A4K2M4, A4K2N8, A4K2P6, A4K2Q6, A4K2R3, A4K2S2, A4K2T1, A4K2V2, A4K2W6, A4K2X4, A4K2Y2, A6H8H5, B2RQA1, G5EFC3, O15554, O18868, O35173, O35174, O43525, O43526, O70344, O73606, O73925, O88758, O88759, O88943, O88944, O89109, O97531, P08510, P0A333, P0A334, P10499, P15384, P15387, P16388, P16389, P16390, P17658, P17659

SIGNOR signaling

4 interactions.

AEffectBMechanism
ezogabineup-regulatesKCNQ3“chemical activation”
KCNQ3“up-regulates quantity”potassium(1+)relocalization
KCNQ3“up-regulates activity”KCNQ2binding
KCNQ2“up-regulates activity”KCNQ3binding

Disease & clinical

Clinical variants and AI predictions

ClinVar

1489 variants total. Per-class counts are floors (≥ shown; pagination cap):

ClassificationCount (floor)
Pathogenic26
Likely pathogenic25
Uncertain significance731
Likely benign418
Benign156

Top pathogenic / likely-pathogenic (30)

Variant IDHGVSClassification
1071385NC_000008.10:g.(?133141509)(133492779_?)delPathogenic
1334436NM_004519.4(KCNQ3):c.989G>T (p.Arg330Leu)Pathogenic
1355934NM_004519.4(KCNQ3):c.802G>C (p.Gly268Arg)Pathogenic
1451762NM_004519.4(KCNQ3):c.1423del (p.Ala475fs)Pathogenic
1453259NM_004519.4(KCNQ3):c.1599del (p.Lys533fs)Pathogenic
1701059NM_004519.4(KCNQ3):c.509A>G (p.Glu170Gly)Pathogenic
2009234NM_004519.4(KCNQ3):c.893del (p.Glu298fs)Pathogenic
2134180NM_004519.4(KCNQ3):c.710T>A (p.Met237Lys)Pathogenic
21415NM_004519.4(KCNQ3):c.925T>C (p.Trp309Arg)Pathogenic
2705067NM_004519.4(KCNQ3):c.299_302del (p.Asn100fs)Pathogenic
2713298NM_004519.4(KCNQ3):c.115G>T (p.Glu39Ter)Pathogenic
2724292NM_004519.4(KCNQ3):c.1576C>T (p.Gln526Ter)Pathogenic
3655008NM_004519.4(KCNQ3):c.958G>A (p.Gly320Arg)Pathogenic
3725428NM_004519.4(KCNQ3):c.1048del (p.Ile350fs)Pathogenic
433110NM_004519.4(KCNQ3):c.1142C>T (p.Ala381Val)Pathogenic
449733NM_004519.4(KCNQ3):c.1060G>A (p.Gly354Arg)Pathogenic
4719410NM_004519.4(KCNQ3):c.61_77dup (p.Asn27fs)Pathogenic
4726206NM_004519.4(KCNQ3):c.1264C>T (p.Gln422Ter)Pathogenic
538551NM_004519.4(KCNQ3):c.1078C>T (p.Gln360Ter)Pathogenic
566195NM_004519.4(KCNQ3):c.1685dup (p.Tyr563fs)Pathogenic
656938NM_004519.4(KCNQ3):c.1090C>T (p.Arg364Cys)Pathogenic
7392NM_004519.4(KCNQ3):c.929G>T (p.Gly310Val)Pathogenic
839826NM_004519.4(KCNQ3):c.1220_1221del (p.Ser407fs)Pathogenic
841488NM_004519.4(KCNQ3):c.1722del (p.Gly575fs)Pathogenic
842150NM_004519.4(KCNQ3):c.61_77del (p.Gly20_Gly21insTer)Pathogenic
978934NM_004519.4(KCNQ3):c.688C>A (p.Arg230Ser)Pathogenic
1012603NM_004519.4(KCNQ3):c.938C>T (p.Thr313Ile)Likely pathogenic
1067197NM_004519.4(KCNQ3):c.929G>A (p.Gly310Asp)Likely pathogenic
1067624NM_004519.4(KCNQ3):c.1123G>A (p.Ala375Thr)Likely pathogenic
1176275NM_004519.4(KCNQ3):c.933G>A (p.Leu311=)Likely pathogenic

SpliceAI

4775 predictions. Top by Δscore:

VariantEffectΔscore
8:132129992:TGAAC:Tacceptor_gain1.0000
8:132129993:GAAC:Gacceptor_gain1.0000
8:132129995:AC:Aacceptor_gain1.0000
8:132129996:CC:Cacceptor_gain1.0000
8:132129997:C:CCacceptor_gain1.0000
8:132132173:GACTT:Gdonor_loss1.0000
8:132132174:ACTTA:Adonor_loss1.0000
8:132132175:CTTAC:Cdonor_loss1.0000
8:132132176:TTA:Tdonor_loss1.0000
8:132132177:TA:Tdonor_loss1.0000
8:132132178:ACCT:Adonor_loss1.0000
8:132132179:C:CTdonor_loss1.0000
8:132132179:CCTGT:Cdonor_gain1.0000
8:132132263:TCC:Tacceptor_loss1.0000
8:132132265:C:CAacceptor_loss1.0000
8:132132266:T:Cacceptor_loss1.0000
8:132140070:CATTA:Cdonor_loss1.0000
8:132140072:TTA:Tdonor_loss1.0000
8:132140073:TACCT:Tdonor_loss1.0000
8:132141123:CATTA:Cdonor_loss1.0000
8:132141124:ATTAC:Adonor_loss1.0000
8:132141125:TTA:Tdonor_loss1.0000
8:132141126:TACC:Tdonor_loss1.0000
8:132141127:ACCT:Adonor_loss1.0000
8:132141128:C:Gdonor_loss1.0000
8:132163466:A:ACdonor_gain1.0000
8:132163467:C:CCdonor_gain1.0000
8:132172690:TGCC:Tacceptor_gain1.0000
8:132172692:CC:Cacceptor_gain1.0000
8:132172692:CCCTG:Cacceptor_loss1.0000

AlphaMissense

5657 scored. Top likely-pathogenic:

VariantProtein changeam_pathogenicity
8:132137894:A:GL564P1.000
8:132137912:A:GL558P1.000
8:132137921:A:GL555P1.000
8:132137925:G:CH554D1.000
8:132137928:C:GG553R1.000
8:132137928:C:TG553R1.000
8:132137937:A:GY550H1.000
8:132137945:A:TI547N1.000
8:132137984:A:GF534S1.000
8:132170374:A:GW399R1.000
8:132170374:A:TW399R1.000
8:132170422:A:GW383R1.000
8:132170422:A:TW383R1.000
8:132172605:A:GL378P1.000
8:132172614:G:TA375D1.000
8:132172634:A:CF368L1.000
8:132172634:A:TF368L1.000
8:132172636:A:GF368L1.000
8:132172639:G:CH367D1.000
8:132172647:C:GR364P1.000
8:132172648:G:TR364S1.000
8:132172668:A:GL357P1.000
8:132172668:A:TL357H1.000
8:132172671:G:TA356D1.000
8:132172683:C:TG352E1.000
8:132172684:C:AG352W1.000
8:132172684:C:GG352R1.000
8:132172684:C:TG352R1.000
8:132172692:C:TG349D1.000
8:132172693:C:GG349R1.000

dbSNP variants (sampled 300 via entrez): RS1000017239 (8:132397063 T>C), RS1000022543 (8:132241419 C>T), RS1000022761 (8:132392022 A>G), RS1000026151 (8:132357185 T>C), RS1000030581 (8:132226867 A>G), RS1000043380 (8:132412782 T>A), RS1000044089 (8:132432590 C>T), RS1000052359 (8:132314975 A>G), RS1000070316 (8:132185955 C>G), RS1000083910 (8:132351464 G>C), RS1000088858 (8:132179664 C>A), RS1000099645 (8:132471045 T>G), RS1000106702 (8:132242332 G>A,T), RS1000111675 (8:132412375 C>T), RS1000114395 (8:132478989 G>A,T)

Disease associations

OMIM: gene MIM:602232 | disease phenotypes: MIM:121200, MIM:121201, MIM:617080, MIM:606369, MIM:117100

GenCC curated gene-disease

DiseaseClassificationInheritance
seizures, benign familial neonatal, 2StrongAutosomal dominant
benign neonatal seizuresSupportiveAutosomal dominant
benign familial infantile epilepsySupportiveAutosomal dominant
genetic developmental and epileptic encephalopathyLimitedAutosomal recessive

ClinGen Gene-Disease Validity (3)

Expert-panel classifications — Definitive > Strong > Moderate > Limited > Disputed > Refuted.

DiseaseClassificationInheritance
complex neurodevelopmental disorderDefinitiveAD
genetic developmental and epileptic encephalopathyLimitedAR
self-limited familial neonatal epilepsyModerateAD

Mondo (11): benign neonatal seizures (MONDO:0016027), seizures, benign familial neonatal, 2 (MONDO:0007366), prostate cancer (MONDO:0008315), intellectual disability (MONDO:0001071), seizures, benign familial infantile, 5 (MONDO:0014903), Lennox-Gastaut syndrome (MONDO:0016532), neurodevelopmental disorder (MONDO:0700092), self-limited epilepsy with centrotemporal spikes (MONDO:0007295), autism spectrum disorder (MONDO:0005258), genetic developmental and epileptic encephalopathy (MONDO:0100062), benign familial infantile epilepsy (MONDO:0017615)

Orphanet (7): Self-limited neonatal epilepsy (Orphanet:1949), Familial prostate cancer (Orphanet:1331), Lennox-Gastaut syndrome (Orphanet:2382), Self-limited infantile epilepsy (Orphanet:306), Self-limited epilepsy with centrotemporal spikes (Orphanet:1945), NON RARE IN EUROPE: Unexplained intellectual disability (Orphanet:319658), NON RARE IN EUROPE: Autism (Orphanet:106)

HPO phenotypes

54 total (30 of 54 shown, HPO-id order):

HPOTerm
HP:0000006Autosomal dominant inheritance
HP:0000153Abnormality of the mouth
HP:0000496Abnormality of eye movement
HP:0000718Aggressive behavior
HP:0000961Cyanosis
HP:0001249Intellectual disability
HP:0001250Seizure
HP:0001263Global developmental delay
HP:0001266Choreoathetosis
HP:0001276Hypertonia
HP:0001332Dystonia
HP:0002020Gastroesophageal reflux
HP:0002069Bilateral tonic-clonic seizure
HP:0002072Chorea
HP:0002104Apnea
HP:0002121Generalized non-motor (absence) seizure
HP:0002133Status epilepticus
HP:0002169Clonus
HP:0002197Generalized-onset seizure
HP:0002266Focal clonic seizure
HP:0002305Athetosis
HP:0002361Psychomotor deterioration
HP:0002372Normal interictal EEG
HP:0002373Febrile seizure (within the age range of 3 months to 6 years)
HP:0002384Focal impaired awareness seizure
HP:0002392EEG with polyspike wave complexes
HP:0003623Neonatal onset
HP:0004305Involuntary movements
HP:0007000Morning myoclonic jerks
HP:0007166Paroxysmal dyskinesia

GWAS associations

5 associations (top):

StudyTraitp-value
GCST002097_19Coronary artery calcification8.000000e-06
GCST002989_8LDL peak particle diameter (total fat intake interaction)1.000000e-06
GCST005171_3QT interval2.000000e-06
GCST008163_572Height2.000000e-06
GCST008464_4Type 2 diabetes3.000000e-08

EFO canonical traits (4, from GWAS)

EFO IDTrait name
EFO:0004723coronary artery calcification
EFO:0007677LDL peak particle diameter measurement
EFO:0007678total fat intake measurement
EFO:0004682QT interval

MeSH disease descriptors (4)

DescriptorNameTree numbers
D008607Intellectual DisabilityC10.597.606.360; C23.888.592.604.646; F01.700.687; F03.625.539
D065768Lennox Gastaut SyndromeC10.228.140.490.493.750; C16.320.495
D065886Neurodevelopmental DisordersF03.625
D011471Prostatic NeoplasmsC04.588.945.440.770; C12.100.500.260.750; C12.100.500.565.625; C12.200.294.260.750; C12.200.294.565.625; C12.200.758.409.750; C12.900.619.750

Drugs & pharmacology

Drug and pharmacology data

Is drug target: yes

ChEMBL targets (6): CHEMBL2221348 (PROTEIN COMPLEX), CHEMBL2362996 (PROTEIN FAMILY), CHEMBL2363063 (PROTEIN FAMILY), CHEMBL2684 (SINGLE PROTEIN), CHEMBL3707192 (PROTEIN COMPLEX), CHEMBL3883311 (PROTEIN COMPLEX)

Molecules with ChEMBL bioactivity

3 molecules (phase ≥1), by development phase (incl. off-target/promiscuous compounds). Patent mentions across the top 20 by phase: 9,776 (via chembl_molecule»patent_compound — counts attach to the compound, not the gene–compound relationship, so off-target/promiscuous molecules can dominate).

MoleculeNamePhasePatents
CHEMBL255044FLUPIRTINE45,706
CHEMBL41355EZOGABINE43,996
CHEMBL266510FLINDOKALNER374

PharmGKB: 1 entry (VIP=true, CPIC=false)

PharmGKB variants

1 variants.

VariantGenesLevelScore#Clin annotsDrugs
rs7818112KCNQ30.000

GtoPdb / IUPHAR curated pharmacology

(IUPHAR/BPS Guide to Pharmacology — expert-curated)

Target class: vgic — Voltage-gated potassium channels (Kv)

Most potent curated ligand interactions (5 total), top 5:

LigandActionAffinityParameter
gabapentinActivation8.28pEC50
retigabineActivator6.2pEC50
JNJ-37822681Activation5.7pEC50
linopirdineInhibitor5.4pIC50
tetraethylammoniumChannel blocker1.5pIC50

Binding affinities (BindingDB)

13 measured of 15 human assays (15 total across all organisms); most potent 13 below. Values come from heterogeneous assays and are not directly comparable.

LigandMeasureValue
CHEMBL598553EC5021 nM
CHEMBL599164EC5025 nM
CHEMBL598126EC5027 nM
CHEMBL604937EC5028 nM
CHEMBL599781EC5053 nM
CHEMBL596909EC5091 nM
CHEMBL591203EC5098 nM
CHEMBL603662EC50160 nM
CHEMBL599365EC50160 nM
CHEMBL603661EC50380 nM
CHEMBL597329EC50570 nM
CHEMBL603667EC502080 nM
CHEMBL603874EC502700 nM

ChEMBL bioactivities

223 potent at pChembl≥5 of 241 total, top 50 by pChembl (potency: 10 = 0.1 nM, 6 = 1 µM).

pChemblTypeValueUnitMolecule
9.82Ki0.15nMCHEMBL5722941
9.74IC500.18nMCHEMBL5722941
8.85EC501.4nMCHEMBL6147947
8.25EC505.623nMCHEMBL6148875
8.19EC506.457nMCHEMBL6170048
8.02EC509.55nMCHEMBL6143552
8.01EC509.8nMCHEMBL5412763
8.00EC5010nMCHEMBL2047506
7.96EC5010.96nMCHEMBL6151161
7.95EC5011.22nMCHEMBL6162279
7.92EC5012nMCHEMBL6151161
7.92EC5012.02nMCHEMBL6151161
7.87EC5013.49nMCHEMBL6143040
7.77EC5017nMCHEMBL6150442
7.77EC5016.98nMCHEMBL6150442
7.75EC5018nMCHEMBL4458793
7.73EC5018.62nMCHEMBL6150563
7.73EC5018.62nMCHEMBL6164400
7.70EC5020nMCHEMBL4278049
7.68EC5021nMCHEMBL598553
7.64EC5023nMCHEMBL592297
7.62EC5024nMCHEMBL3621438
7.60EC5025nMCHEMBL599164
7.57EC5026.92nMCHEMBL6145412
7.57EC5027nMCHEMBL598126
7.55EC5028.18nMCHEMBL6150442
7.55EC5028nMCHEMBL604937
7.55EC5028nMCHEMBL599374
7.54EC5029nMCHEMBL589898
7.52EC5030nMCHEMBL2047511
7.43EC5037nMCHEMBL4093377
7.43EC5037nMCHEMBL4062193
7.42EC5038.02nMCHEMBL6144404
7.42EC5038.02nMCHEMBL6171400
7.40EC5040nMCHEMBL3621449
7.40EC5040nMCHEMBL4276984
7.40EC5040nMCHEMBL1703636
7.36EC5044nMCHEMBL609624
7.36EC5044nMCHEMBL591302
7.34EC5045.71nMCHEMBL6141883
7.31EC5049nMCHEMBL599376
7.30EC5050nMCHEMBL3621439
7.30EC5050nMCHEMBL4277250
7.30EC5050nMCHEMBL4549421
7.30EC5050nMCHEMBL4516269
7.28EC5052.48nMCHEMBL6168436
7.28EC5053nMCHEMBL599781
7.22EC5060nMCHEMBL5204124
7.22EC5060nMCHEMBL1689654
7.21EC5062nMCHEMBL3621440

PubChem BioAssay actives

183 with measured affinity, of 466 total; 50 most potent distinct compounds. Largely complementary to BindingDB; screening values are coarse (µM, 4 dp), so sub-nM hits tie at the floor.

CompoundAssayTypeValueUnit
3-[(1R,2aS,4S,5aS,8aS,10S,11aR,14aS,16S,17aS,19S,20aS,22S,23aS,25S,26aS,28S,29aS,31R,32aS,35aS,36R,38aS,39S,41aS,42S,44aS,45S,48R,50aS,51S,53aS,54S,56aS,57S,59aS,60S,63S,66S,69S,72S,75S,78S,87R,93S,96S,99S)-17a,20a,23a,53a,63-pentakis(4-aminobutyl)-31-[[(2S)-2-[[(2S)-6-amino-2-[[(2S)-5-carbamimidamido-2-[[(2S)-5-carbamimidamido-2-[[(2S)-1-[(2S)-5-oxopyrrolidine-2-carbonyl]pyrrolidine-2-carbonyl]amino]pentanoyl]amino]pentanoyl]amino]hexanoyl]amino]-4-methylpentanoyl]amino]-16,29a,72,78-tetrakis(2-amino-2-oxoethyl)-14a,26a-bis(3-amino-3-oxopropyl)-2a,38a,66-tribenzyl-28,50a,57-tris[(2S)-butan-2-yl]-4,5a,19,42,45,69-hexakis(3-carbamimidamidopropyl)-51,54-bis(2-carboxyethyl)-56a,99-bis(carboxymethyl)-36-[[(2S,3S)-1-(carboxymethylamino)-3-methyl-1-oxopentan-2-yl]carbamoyl]-39,60-bis[(1R)-1-hydroxyethyl]-75,93-bis(hydroxymethyl)-32a,35a,59a-tris[(4-hydroxyphenyl)methyl]-22-(1H-imidazol-4-ylmethyl)-96-(1H-indol-3-ylmethyl)-41a-methyl-25-(2-methylpropyl)-1a,3,4a,6,7a,9,10a,13a,15,16a,18,19a,21,22a,24,25a,27,28a,30,31a,34a,37a,38,40a,41,43a,44,47,49a,50,52a,53,55a,56,58a,59,61a,62,65,68,71,74,77,80,83,86,89,92,95,98-pentacontaoxo-33,34,63a,64a,67a,68a-hexathia-a,2,3a,5,6a,8,9a,12a,14,15a,17,18a,20,21a,23,24a,26,27a,29,30a,33a,36a,37,39a,40,42a,43,46,48a,49,51a,52,54a,55,57a,58,60a,61,64,67,70,73,76,79,82,85,88,91,94,97-pentacontazapentacyclo[85.74.4.448,111.010,14.0144,148]nonahexacontahectan-8a-yl]propanoic acid2198828: Binding affinity to KV channel (unknown origin) assessed as inhibition constantki0.0001uM
N-[4-(2-bromo-6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl)-2,6-dimethylphenyl]-3,3-dimethylbutanamide2030288: Agonist activity at Kv7.2/Kv7.3 (unknown origin) expressed in human HEK293 cells by whole cell patch clamp assayec500.0098uM
N-(6-chloro-3-pyridinyl)-4-phenoxybenzamide669435: Agonist activity at KCNQ2/KCNQ3 expressed in CHO cells assessed as increase in KCl-induced 86Rb+ efflux incubated for 10 mins prior to KCl-induction by liquid scintillation countingec500.0100uM
cyclopropyl N-[2-amino-3-fluoro-4-[[4-(trifluoromethyl)phenyl]methylamino]phenyl]carbamate1861512: Agonist activity at Kv7.2/3 (unknown origin) expressed in CHO cells co-expressing GFPec500.0180uM
N-[(1R)-2-hydroxy-1-(3-methylsulfonylphenyl)ethyl]-5-(pentafluoro-lambda6-sulfanyl)-2-phenoxybenzamide1414246: Activation of human Kv7.2/7.3 by patch clamp methodec500.0200uM
N-[(Z)-(5,6-difluoro-3-methyl-1,3-benzothiazol-2-ylidene)amino]adamantane-1-carboxamide461899: Activation of KCNQ2/KCNQ3 expressed in CHO cells by isotopic efflux assayec500.0210uM
tert-butyl N-[(Z)-[3-methyl-6-(trifluoromethoxy)-1,3-benzothiazol-2-ylidene]amino]carbamate461899: Activation of KCNQ2/KCNQ3 expressed in CHO cells by isotopic efflux assayec500.0230uM
N-(4,6-dimethoxy-2-thiomorpholin-4-ylpyrimidin-5-yl)-3,3-dimethylbutanamide1249421: Activation of human Kv7.2/7.3 expressed in CHOK1 cellsec500.0240uM
N-[(Z)-[3-methyl-6-(trifluoromethoxy)-1,3-benzothiazol-2-ylidene]amino]adamantane-1-carboxamide461899: Activation of KCNQ2/KCNQ3 expressed in CHO cells by isotopic efflux assayec500.0250uM
N-[(Z)-(3-methyl-1,3-benzothiazol-2-ylidene)amino]adamantane-1-carboxamide461899: Activation of KCNQ2/KCNQ3 expressed in CHO cells by isotopic efflux assayec500.0270uM
N-[(Z)-(6-fluoro-3-methyl-1,3-benzothiazol-2-ylidene)amino]adamantane-1-carboxamide461899: Activation of KCNQ2/KCNQ3 expressed in CHO cells by isotopic efflux assayec500.0280uM
N-[(Z)-[3-methyl-6-(trifluoromethoxy)-1,3-benzothiazol-2-ylidene]amino]cyclohexanecarboxamide461899: Activation of KCNQ2/KCNQ3 expressed in CHO cells by isotopic efflux assayec500.0280uM
cyclopentyl N-[(Z)-[3-methyl-6-(trifluoromethoxy)-1,3-benzothiazol-2-ylidene]amino]carbamate461899: Activation of KCNQ2/KCNQ3 expressed in CHO cells by isotopic efflux assayec500.0290uM
N-(6-chloro-3-pyridinyl)-3-fluoro-4-phenoxybenzamide669435: Agonist activity at KCNQ2/KCNQ3 expressed in CHO cells assessed as increase in KCl-induced 86Rb+ efflux incubated for 10 mins prior to KCl-induction by liquid scintillation countingec500.0300uM
N-(3,4-difluorophenyl)-6-(trifluoromethoxy)-1H-pyrazolo[4,3-b]pyridin-3-amine1454473: Activation of KCNQ2/3 (unknown origin)ec500.0370uM
N-(6-chloro-3-pyridinyl)-6-(trifluoromethyl)-1H-indazol-3-amine1454473: Activation of KCNQ2/3 (unknown origin)ec500.0370uM
3-cyclopentyl-N-[4,6-dimethoxy-2-(4-methoxypiperidin-1-yl)pyrimidin-5-yl]propanamide1249421: Activation of human Kv7.2/7.3 expressed in CHOK1 cellsec500.0400uM
N-[(1S)-1-(3-methylsulfonylphenyl)ethyl]-2-phenoxy-5-(trifluoromethyl)benzamide1414246: Activation of human Kv7.2/7.3 by patch clamp methodec500.0400uM
N-(2,4,6-trimethylphenyl)bicyclo[2.2.1]heptane-2-carboxamide1414246: Activation of human Kv7.2/7.3 by patch clamp methodec500.0400uM
2-cyclopentyl-N-[(Z)-[3-methyl-6-(trifluoromethoxy)-1,3-benzothiazol-2-ylidene]amino]acetamide461899: Activation of KCNQ2/KCNQ3 expressed in CHO cells by isotopic efflux assayec500.0440uM
4-fluoro-N-[(Z)-[3-methyl-6-(trifluoromethoxy)-1,3-benzothiazol-2-ylidene]amino]benzamide461899: Activation of KCNQ2/KCNQ3 expressed in CHO cells by isotopic efflux assayec500.0440uM
3,3-dimethyl-N-[(Z)-[3-methyl-6-(trifluoromethoxy)-1,3-benzothiazol-2-ylidene]amino]butanamide461899: Activation of KCNQ2/KCNQ3 expressed in CHO cells by isotopic efflux assayec500.0490uM
N-[2-(4,4-difluoropiperidin-1-yl)-4,6-dimethoxypyrimidin-5-yl]-3,3-dimethylbutanamide1249421: Activation of human Kv7.2/7.3 expressed in CHOK1 cellsec500.0500uM
trans-(1S,2S)-5,5-difluoro-N-[(1R)-2-hydroxy-1-[3-(trifluoromethyl)phenyl]ethyl]-2-phenylcyclohexane-1-carboxamide1414246: Activation of human Kv7.2/7.3 by patch clamp methodec500.0500uM
3-cyclopentyl-N-[3-[4-(trifluoromethyl)phenyl]pyrazolo[1,5-a]pyrimidin-2-yl]propanamide1557153: Agonist activity at human KCNQ2/3 expressed in HEK293 cells by FLIPR based thallium influx assayec500.0500uM
N-[3-(4-fluoro-3-methylphenyl)-5,7-dimethylpyrazolo[1,5-a]pyrimidin-2-yl]-3,3-dimethylbutanamide1557153: Agonist activity at human KCNQ2/3 expressed in HEK293 cells by FLIPR based thallium influx assayec500.0500uM
N-[(Z)-[3-methyl-5-(trifluoromethyl)-1,3-benzothiazol-2-ylidene]amino]adamantane-1-carboxamide461899: Activation of KCNQ2/KCNQ3 expressed in CHO cells by isotopic efflux assayec500.0530uM
N-[2-amino-3-fluoro-4-[[4-(trifluoromethyl)phenyl]methylamino]phenyl]-3,3-dimethylbutanamide1874639: Activation of Kv7.2/Kv7.3 channel (unknown origin) expressed in CHO cells assessed as maximum current density measured after 24 hrs by whole cell patch clamp based electrophysiological methodec500.0600uM
5-(2,6-dichloro-5-fluoro-3-pyridinyl)-3-phenyl-2-(trifluoromethyl)-1H-pyrazolo[1,5-a]pyrimidin-7-one587711: Activation of KCNQ2/Q3 expressed in CHO cells by atomic absorption Rb’+ efflux assayec500.0600uM
N-[4,6-dimethoxy-2-(1,4-oxazepan-4-yl)pyrimidin-5-yl]-3,3-dimethylbutanamide1249421: Activation of human Kv7.2/7.3 expressed in CHOK1 cellsec500.0620uM
N-[(Z)-[3-methyl-6-(trifluoromethoxy)-1,3-benzothiazol-2-ylidene]amino]cyclopentanecarboxamide461899: Activation of KCNQ2/KCNQ3 expressed in CHO cells by isotopic efflux assayec500.0620uM
N-(4,6-dimethoxy-2-piperidin-1-ylpyrimidin-5-yl)-3,3-dimethylbutanamide1249421: Activation of human Kv7.2/7.3 expressed in CHOK1 cellsec500.0640uM
2-cyclopentyl-N-[3-(4-fluoro-3-methylphenyl)-5,7-dimethylpyrazolo[1,5-a]pyrimidin-2-yl]acetamide1557153: Agonist activity at human KCNQ2/3 expressed in HEK293 cells by FLIPR based thallium influx assayec500.0700uM
3-cyclopentyl-N-[3-(4-fluoro-3-methylphenyl)-5,7-dimethylpyrazolo[1,5-a]pyrimidin-2-yl]propanamide1557153: Agonist activity at human KCNQ2/3 expressed in HEK293 cells by FLIPR based thallium influx assayec500.0700uM
N-(6-chloro-3-pyridinyl)-3-fluoro-4-(4-fluorophenyl)sulfonylbenzamide669435: Agonist activity at KCNQ2/KCNQ3 expressed in CHO cells assessed as increase in KCl-induced 86Rb+ efflux incubated for 10 mins prior to KCl-induction by liquid scintillation countingec500.0700uM
N-[(3-methylsulfonylphenyl)methyl]-5-(pentafluoro-lambda6-sulfanyl)-2-phenoxybenzamide1414246: Activation of human Kv7.2/7.3 by patch clamp methodec500.0800uM
N-[(1R)-2-hydroxy-1-(3-methylsulfonylphenyl)ethyl]-2-phenoxy-5-(trifluoromethyl)benzamide1414246: Activation of human Kv7.2/7.3 by patch clamp methodec500.0800uM
3-cyclopentyl-N-[3-(4-fluoro-3-methylphenyl)-6-methylpyrazolo[1,5-a]pyrimidin-2-yl]propanamide1557153: Agonist activity at human KCNQ2/3 expressed in HEK293 cells by FLIPR based thallium influx assayec500.0800uM
N-(6-chloro-3-pyridinyl)-3-fluoro-4-(4-fluorophenyl)sulfanylbenzamide669435: Agonist activity at KCNQ2/KCNQ3 expressed in CHO cells assessed as increase in KCl-induced 86Rb+ efflux incubated for 10 mins prior to KCl-induction by liquid scintillation countingec500.0800uM
4-chloro-N-(6-chloro-3-pyridinyl)-3-fluorobenzamide669435: Agonist activity at KCNQ2/KCNQ3 expressed in CHO cells assessed as increase in KCl-induced 86Rb+ efflux incubated for 10 mins prior to KCl-induction by liquid scintillation countingec500.0800uM
N-[(Z)-[3-methyl-4-(trifluoromethyl)-1,3-benzothiazol-2-ylidene]amino]adamantane-1-carboxamide461899: Activation of KCNQ2/KCNQ3 expressed in CHO cells by isotopic efflux assayec500.0910uM
propan-2-yl N-[(Z)-[3-methyl-6-(trifluoromethoxy)-1,3-benzothiazol-2-ylidene]amino]carbamate461899: Activation of KCNQ2/KCNQ3 expressed in CHO cells by isotopic efflux assayec500.0950uM
N-[(Z)-(7-fluoro-3-methyl-1,3-benzothiazol-2-ylidene)amino]adamantane-1-carboxamide461899: Activation of KCNQ2/KCNQ3 expressed in CHO cells by isotopic efflux assayec500.0980uM
trans-(1S,2S)-N-[(1R)-1-(3-chlorophenyl)-2-hydroxyethyl]-5,5-difluoro-2-phenylcyclohexane-1-carboxamide1414246: Activation of human Kv7.2/7.3 by patch clamp methodec500.1000uM
3-fluoro-N-[(Z)-[3-methyl-6-(trifluoromethoxy)-1,3-benzothiazol-2-ylidene]amino]benzamide461899: Activation of KCNQ2/KCNQ3 expressed in CHO cells by isotopic efflux assayec500.1000uM
2-cyclopentyl-N-[3-[(4-fluorophenyl)methyl]-6-methylpyrazolo[1,5-a]pyrimidin-2-yl]acetamide689724: Activation of KCNQ2/Q3ec500.1000uM
N-[2-(3,3-difluoroazetidin-1-yl)-4,6-dimethoxypyrimidin-5-yl]-3,3-dimethylbutanamide1249421: Activation of human Kv7.2/7.3 expressed in CHOK1 cellsec500.1100uM
N-(6-chloro-3-pyridinyl)-3-fluoro-4-propan-2-ylsulfanylbenzamide669435: Agonist activity at KCNQ2/KCNQ3 expressed in CHO cells assessed as increase in KCl-induced 86Rb+ efflux incubated for 10 mins prior to KCl-induction by liquid scintillation countingec500.1100uM
(2S)-2-phenyl-N-(2-pyrrolidin-1-ylphenyl)butanamide697779: Antagonist activity at KCNQ2/Q3 expressed in CHO cells incubated for 3 mins by automated patch clamp assayic500.1200uM
4,5-difluoro-N-[(1S)-1-(3-methylsulfonylphenyl)ethyl]-2-phenoxybenzamide1414246: Activation of human Kv7.2/7.3 by patch clamp methodec500.1300uM

CTD chemical–gene interactions

35 total (human), top 30 by PubMed support.

ChemicalActions (top 5)PubMed papers
Benzo(a)pyreneincreases expression, increases methylation2
Aflatoxin B1decreases methylation, increases methylation2
2,5,2’,5’-tetrachlorobiphenylincreases expression, decreases expression1
ethyl-p-hydroxybenzoatedecreases expression1
sulforaphanedecreases expression1
benzo(e)pyreneincreases methylation1
aflatoxin B2increases methylation1
CGP 52608increases reaction, affects binding1
perfluoro-n-nonanoic acidincreases expression1
ezogabinedecreases response to substance, affects activity1
N-(1-(3-morpholin-4-ylphenyl)ethyl)-3-phenylacrylamideaffects activity, affects binding1
abrineincreases expression1
jinfukangaffects cotreatment, decreases expression1
(+)-JQ1 compounddecreases expression1
Resveratrolaffects cotreatment, decreases expression1
Sunitinibincreases expression1
Arsenicaffects methylation1
Benzimidazolesaffects binding, increases activity, increases import1
Cisplatinaffects cotreatment, decreases expression1
Doxorubicindecreases expression1
Histamineaffects cotreatment, decreases activity, decreases reaction1
Methapyrileneincreases methylation1
Plant Extractsaffects cotreatment, decreases expression1
Smokedecreases expression1
Thalliumaffects binding, increases activity, increases import1
Triclosandecreases expression1
Valproic Acidincreases expression1
Vanadiumincreases expression1
Cyclosporinedecreases methylation1
Astemizoleaffects cotreatment, decreases activity, decreases reaction1

ChEMBL screening assays

97 unique, capped per target: 91 binding, 4 functional, 1 admet, 1 toxicity

Representative assays (with source publication via chembl_document):

Assay IDTypeDescriptionSource paper
CHEMBL1070909BindingActivation of KCNQ2/KCNQ3 expressed in CHO cells by isotopic efflux assayNovel KCNQ2/Q3 agonists as potential therapeutics for epilepsy and neuropathic pain. — J Med Chem
CHEMBL2050726FunctionalAgonist activity at KCNQ2/KCNQ3 expressed in CHO cells assessed as increase in KCl-induced 86Rb+ efflux incubated for 10 mins prior to KCl-induction by liquid scintillation countingN-Pyridyl and Pyrimidine Benzamides as KCNQ2/Q3 Potassium Channel Openers for the Treatment of Epilepsy. — ACS Med Chem Lett
CHEMBL4385400ADMETAgonist activity at KCNQ2/KCNQ3 (unknown origin) expressed in CHOK1 cells assessed as increase in amplitude of outward current at 10 uM by whole cell patch clamp assay relative to controlDiscovery of Novel Retigabine Derivatives as Potent KCNQ4 and KCNQ5 Channel Agonists with Improved Specificity. — ACS Med Chem Lett

Cellosaurus cell lines

5 cell lines: 2 induced pluripotent stem cell, 2 spontaneously immortalized cell line, 1 transformed cell line

First 10 cell lines (id-ordered, not curated):

CellosaurusNameCategorySex
CVCL_A6XRUNINAi001-AInduced pluripotent stem cellMale
CVCL_A6XSUNINAi001-BInduced pluripotent stem cellMale
CVCL_C0Y7B’SYS CHO Kv7.2/3Spontaneously immortalized cell lineFemale
CVCL_D1KAPrecisION hKv7.2/Kv7.3-CHOSpontaneously immortalized cell lineFemale
CVCL_D1KBPrecisION hKv7.3/Kv7.5-HEKTransformed cell lineFemale

Clinical trials (associated diseases)

312 trials via MONDO — disease-level, not drug-specific.

TrialPhaseStatusTitle
NCT00029224PHASE4COMPLETEDTreatment With Zoledronic Acid in Patients With Breast Cancer, Multiple Myeloma, and Prostate Cancer With Cancer Related Bone Lesions
NCT00035997PHASE4COMPLETEDOpen-label Trial on the Effect of I.V. Zoledronic Acid 4 mg on Bone Density in Hormone Sensitive Prostate Cancer Patients With Bone Metastasis
NCT00063609PHASE4COMPLETEDThe Effect of Zoledronic Acid on Bone Loss in Prostate Cancer Patients Undergoing Androgen Deprivation Therapy
NCT00103623PHASE4SUSPENDEDThe Plenaxis® Experience Study
NCT00106392PHASE4COMPLETEDA Safety and Efficacy Study of Prograf in the Prevention of Erectile Dysfunction After Radical Prostatectomy
NCT00185029PHASE4UNKNOWNMR-Lymphography and Lymph Node Staging in Prostate Cancer
NCT00199485PHASE4COMPLETEDAngelica Sinensis for the Treatment of Hot Flashes in Men Undergoing LHRH Therapy for Prostate Cancer
NCT00219219PHASE4COMPLETEDZoledronic Acid in the Prevention of Skeletal-related Events in Hormone Refractory and Hormone-sensitive Prostate Cancer Patients With Bone Metastases
NCT00219271PHASE4COMPLETEDEffect Of Zoledronic Acid On Circulating And Bone Marrow-Residing Prostate Cancer Cells In Patients With Clinically Localized Prostate Cancer
NCT00237146PHASE4COMPLETEDStudy to Evaluate Zoledronic Acid on Quality of Life and Skeletal-related Events as Adjuvant Treatment in Patients With Hormone-naïve Prostate Cancer and Bone Metastasis Who Have Undergone Orchiectomy
NCT00242554PHASE4COMPLETEDOpen-label Phase IV Clinical Trial to Evaluate the Safety and Tolerability of Zoledronic Acid in Patients With Prostate Cancer and Bone Metastases
NCT00280098PHASE4COMPLETEDDocetaxel in the Treatment of Hormone Refractory Prostate Cancer
NCT00293696PHASE4COMPLETEDCasodex/Zoladex Biomarkers in Localised Prostate Cancer
NCT00334139PHASE4COMPLETEDEffect of Zoledronic Acid on Bone Metabolism in Patients With Bone Metastasis and Prostate or Breast Cancer
NCT00375765PHASE4COMPLETEDEffects On Dihydrotestosterone Regulated Gene Expression In Benign Prostatic Hyperplasia Or Prostate Cancer
NCT00391690PHASE4COMPLETEDEvaluation of Bone Markers as Diagnostic Tools for Early Detection of Bone Metastases in Patients With High Risk Prostate Cancer
NCT00422708PHASE4COMPLETEDLocal Anesthesia for Prostate Biopsy
NCT00526331PHASE4COMPLETEDEvaluation of Arterial Pressure Based Cardiac Output for Goal-Directed Perioperative Therapy
NCT00590213PHASE4COMPLETEDCompare the Value of Prophylactic Versus Therapeutic Breast Radiotherapy in CASODEX
NCT00629330PHASE4TERMINATEDDissemination of Prostate Cancer Screening to PCP’s in African American Communities
NCT00771966PHASE4COMPLETEDRadical Prostatectomy and Perioperative Fluid Therapy
NCT00805701PHASE4COMPLETEDStudy Assessing The Efficacy And Safety Of Avodart (Dutasteride) At Improving Urinary Symptoms In Men With Prostate Cancer Who Are Undergoing Seed Implantation
NCT00859027PHASE4COMPLETEDEffect Of Risedronate On Bone Mass In Older Men Receiving Neoadjuvant Therapy For Prostate Cancer
NCT00906269PHASE4UNKNOWNCan Hyperbaric Oxygen Improve Erectile Function Following Surgery for Prostate Cancer
NCT00953277PHASE4COMPLETEDStudy of Nerve Reconstruction Using AVANCE in Subjects Who Undergo Robotic Assisted Prostatectomy for Treatment of Prostate Cancer
NCT00982800PHASE4COMPLETEDDoes Postoperative Gabapentin Reduce Pain, Opioid Consumption and Anxiety and Have a Positive Effect on Health Related Quality of Life After Radical Prostatectomy?
NCT01083199PHASE4COMPLETEDGlobal Performance Evaluation of the AMS CONTINUUM™ Device
NCT01136226PHASE4COMPLETEDEvaluate Recovery of Testosterone for Patients Using Eligard
NCT01161563PHASE4COMPLETEDRandomized Crossover Trial to Assess the Tolerability of Gonadotropin Releasing Hormone (GnRH) Analogue Administration
NCT01230905PHASE4COMPLETEDStudy to Monitor the Effects of Androgen Suppression Treatment on the Heart
NCT01296672PHASE4COMPLETED3 Month Finasteride Challenge Test Can Significantly Improve the Performance of Screening for Prostate Cancer
NCT01365143PHASE4TERMINATEDProspective Randomized Trial Comparing Robotic Versus Open Radical Prostatectomy
NCT01379742PHASE4UNKNOWNComparison of Between ThinSeed™ and OncoSeed™ for Permanent Prostate Brachytherapy
NCT01486563PHASE4COMPLETEDHydroxyethyl Starch and Renal Function After Radical Prostatectomy
NCT01511874PHASE4COMPLETEDEfficacy and Safety Study of ELIGARD 22.5mg With Prostate Cancer
NCT01512472PHASE4TERMINATEDFirmagon (Degarelix) Intermittent Therapy
NCT01547416PHASE4COMPLETEDThe Effect of Combined General/Epidural Anesthesia Versus General Anesthesia on Diaphragmatic Function
NCT01571544PHASE4COMPLETEDThe Use of Thermal Suits as Preventing Hypothermia During Surgery
NCT01581749PHASE4UNKNOWNEvaluation of Truebeam for Low-Intermediate Risk Prostate Cancer
NCT01649635PHASE4COMPLETEDStudy of Cabazitaxel Combined With Prednisone and Prophylaxis of Neutropenia Complications in the Treatment of Patients With Metastatic Castration-resistant Prostate Cancer