KCNA4
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Also known as Kv1.4HK1HPCN2PCN2
Summary
KCNA4 (potassium voltage-gated channel subfamily A member 4, HGNC:6222) is a protein-coding gene on chromosome 11p14.1, encoding Potassium voltage-gated channel subfamily A member 4 (P22459). Voltage-gated potassium channel that mediates transmembrane potassium transport in excitable membranes.
Potassium channels represent the most complex class of voltage-gated ion channels from both functional and structural standpoints. Their diverse functions include regulating neurotransmitter release, heart rate, insulin secretion, neuronal excitability, epithelial electrolyte transport, smooth muscle contraction, and cell volume. Four sequence-related potassium channel genes - shaker, shaw, shab, and shal - have been identified in Drosophila, and each has been shown to have human homolog(s). This gene encodes a member of the potassium channel, voltage-gated, shaker-related subfamily. This member contains six membrane-spanning domains with a shaker-type repeat in the fourth segment. It belongs to the A-type potassium current class, the members of which may be important in the regulation of the fast repolarizing phase of action potentials in heart and thus may influence the duration of cardiac action potential.
Source: NCBI Gene 3739 — RefSeq curated summary.
At a glance
- Gene–disease (curated): non-spherocytic hemolytic anemia due to hexokinase deficiency (Strong, GenCC) — +5 more curated relationships
- GWAS associations: 64
- Clinical variants (ClinVar): 937 total — 11 pathogenic, 22 likely-pathogenic
- Phenotypes (HPO): 113
- Druggable target: yes
- MANE Select transcript:
NM_002233
Identifiers
Gene identifiers
| Field | Value |
|---|---|
| HGNC ID | HGNC:6222 |
| Approved symbol | KCNA4 |
| Name | potassium voltage-gated channel subfamily A member 4 |
| Location | 11p14.1 |
| Locus type | gene with protein product |
| Status | Approved |
| Aliases | Kv1.4, HK1, HPCN2, PCN2 |
| Ensembl gene | ENSG00000182255 |
| Ensembl biotype | protein_coding |
| OMIM | 176266 |
| Entrez | 3739 |
Gene structure
Transcript identifiers
Ensembl transcripts: 5 — 4 protein_coding, 1 protein_coding_CDS_not_defined
ENST00000328224, ENST00000526518, ENST00000953053, ENST00000953054, ENST00000953055
RefSeq mRNA: 1 — MANE Select: NM_002233
NM_002233
CCDS: CCDS41629
Canonical transcript exons
ENST00000328224 — 2 exons
| Exon | Start | End |
|---|---|---|
| ENSE00001312573 | 30009730 | 30013460 |
| ENSE00001480049 | 30016572 | 30017030 |
Expression profiles
Bgee: expression breadth ubiquitous, 142 present calls, max score 84.15.
FANTOM5 (CAGE): breadth broad, TPM avg 1.4502 / max 149.4223, expressed in 236 samples.
FANTOM5 promoters (3 alternative TSS)
| Promoter ID | TPM avg | Samples expressed |
|---|---|---|
| 119104 | 1.4195 | 236 |
| 119103 | 0.0215 | 10 |
| 119102 | 0.0092 | 4 |
Top tissues by expression
271 total, by Bgee expression score (0-100, higher = more expressed):
| Tissue | Anatomy ID | Expression score | Quality |
|---|---|---|---|
| adrenal tissue | UBERON:0018303 | 84.15 | gold quality |
| nucleus accumbens | UBERON:0001882 | 76.81 | gold quality |
| secondary oocyte | CL:0000655 | 76.09 | gold quality |
| caudate nucleus | UBERON:0001873 | 72.83 | gold quality |
| left adrenal gland cortex | UBERON:0035825 | 71.73 | gold quality |
| adrenal gland | UBERON:0002369 | 71.64 | gold quality |
| putamen | UBERON:0001874 | 71.28 | gold quality |
| left adrenal gland | UBERON:0001234 | 71.24 | gold quality |
| adrenal cortex | UBERON:0001235 | 70.85 | gold quality |
| prefrontal cortex | UBERON:0000451 | 70.65 | gold quality |
| right adrenal gland | UBERON:0001233 | 70.31 | gold quality |
| right adrenal gland cortex | UBERON:0035827 | 70.13 | gold quality |
| ventricular zone | UBERON:0003053 | 69.91 | gold quality |
| orbitofrontal cortex | UBERON:0004167 | 69.90 | gold quality |
| cortical plate | UBERON:0005343 | 68.82 | gold quality |
| triceps brachii | UBERON:0001509 | 68.70 | gold quality |
| gluteal muscle | UBERON:0002000 | 68.60 | gold quality |
| paraflocculus | UBERON:0005351 | 66.92 | gold quality |
| middle frontal gyrus | UBERON:0002702 | 66.91 | gold quality |
| germinal epithelium of ovary | UBERON:0001304 | 66.90 | gold quality |
| telencephalon | UBERON:0001893 | 66.64 | gold quality |
| frontal pole | UBERON:0002795 | 66.52 | gold quality |
| frontal cortex | UBERON:0001870 | 66.39 | gold quality |
| dorsolateral prefrontal cortex | UBERON:0009834 | 66.23 | gold quality |
| endothelial cell | CL:0000115 | 65.91 | gold quality |
| endometrium epithelium | UBERON:0004811 | 65.89 | silver quality |
| cervix squamous epithelium | UBERON:0006922 | 65.71 | gold quality |
| Brodmann (1909) area 9 | UBERON:0013540 | 65.69 | gold quality |
| neocortex | UBERON:0001950 | 65.60 | gold quality |
| forebrain | UBERON:0001890 | 65.46 | gold quality |
Single-cell (SCXA)
Detected in 1 experiment(s), a significant marker in 1.
| Experiment | Marker? | Max mean expression |
|---|---|---|
| E-ANND-3 | yes | 3.11 |
Regulation
Is transcription factor: no
Upstream regulators (CollecTRI, top): NFKB
miRNA regulators (miRDB)
130 targeting KCNA4, top 30 by miRDB confidence (max_score; target_count = how many genes the miRNA targets in total — lower means more specific):
| miRNA | Max score | Avg score | miRNA target_count |
|---|---|---|---|
| HSA-MIR-7110-3P | 100.00 | 73.18 | 2486 |
| HSA-MIR-340-5P | 100.00 | 72.50 | 4437 |
| HSA-MIR-3163 | 100.00 | 77.23 | 8605 |
| HSA-MIR-3925-3P | 100.00 | 69.95 | 1237 |
| HSA-MIR-30A-5P | 100.00 | 76.31 | 3233 |
| HSA-MIR-30B-5P | 100.00 | 76.29 | 3248 |
| HSA-MIR-30C-5P | 100.00 | 76.29 | 3248 |
| HSA-MIR-30D-5P | 100.00 | 76.32 | 3233 |
| HSA-MIR-30E-5P | 100.00 | 76.32 | 3242 |
| HSA-MIR-8485 | 100.00 | 77.57 | 4731 |
| HSA-MIR-4262 | 100.00 | 73.26 | 3931 |
| HSA-MIR-1277-5P | 100.00 | 73.95 | 5056 |
| HSA-MIR-513A-5P | 100.00 | 69.77 | 2465 |
| HSA-MIR-5692A | 100.00 | 74.40 | 6850 |
| HSA-MIR-6873-3P | 100.00 | 71.42 | 2626 |
| HSA-MIR-548C-3P | 99.99 | 74.01 | 7587 |
| HSA-MIR-548AW | 99.99 | 72.57 | 3559 |
| HSA-MIR-33A-5P | 99.99 | 68.62 | 1055 |
| HSA-MIR-33B-5P | 99.99 | 68.58 | 1062 |
| HSA-MIR-181A-5P | 99.99 | 72.96 | 2995 |
| HSA-MIR-181B-5P | 99.99 | 72.97 | 2996 |
| HSA-MIR-181C-5P | 99.99 | 72.95 | 2996 |
| HSA-MIR-181D-5P | 99.99 | 73.04 | 2997 |
| HSA-MIR-19A-3P | 99.98 | 75.33 | 2762 |
| HSA-MIR-19B-3P | 99.98 | 75.44 | 2754 |
| HSA-MIR-27A-3P | 99.98 | 72.13 | 2955 |
| HSA-MIR-27B-3P | 99.98 | 72.13 | 2955 |
| HSA-MIR-9985 | 99.98 | 72.11 | 2939 |
| HSA-MIR-499A-5P | 99.98 | 70.79 | 1323 |
| HSA-MIR-5696 | 99.98 | 72.36 | 4487 |
Literature-anchored findings (GeneRIF, showing 16)
- N-type inactivation in hKv1.4 is regulated by pH(i) in the physiologic range through ionization of specific amino acid residues in the ball domain. (PMID:12065763)
- Results describe an erbstatin (Erb) analogue as a small molecule inhibitor of the N-type inactivation in potassium channels Kv1.4 and Kv1.1+Kvbeta1. (PMID:15136567)
- Novel role for GIP in regulating K(V)1.4 cell surface expression and modulation of A-type potassium currents (PMID:15955806)
- Fast inactivation in human Kv1.4 is modulated by structural elements in the C-terminus, suggesting that the process involves the concerted action of the N- and C-termini. (PMID:16308273)
- The results demonstrate that the human Kvbeta1.1 and Kvbeta1.2 subunits regulate the proportion of wild-type Kv1.4-1.1 channels that are available to open. (PMID:17156368)
- Ginsenoside Rg3 inhibits KV1.4 channel currents by interacting with the lysine531 residue. (PMID:17959711)
- Thr-330 of Kv1.4 serves to interlock the voltage-sensing and gating domains of adjacent monomers, thereby yielding a structure competent for the surface expression of functional tetramers (PMID:18640987)
- Both arachidonic acid and Trolox potently modulate Kv1.4 and Kv4.2 channel alpha-subunits, thereby presumably tuning presynaptic transmitter release and postsynaptic somatodendritic excitability in synaptic transmission and plasticity. (PMID:19453640)
- Sialylated N-glycans uniquely impact gating of a mammalian Shaker family K(v) channel isoform, K(v)1.5, but have no effect on gating of a second Shaker isoform, K(v)1.4. (PMID:19961828)
- Data suggest that episodic ataxia type 1 mutations affect fast inactivation of Kv1.1/1.4 channels by a reduction in either subunit surface expression or altered affinity for the inactivation domain. (PMID:21307345)
- Detection of the methylation prevalence of KCNA4 and CYP26B1 together in serum demonstrated the good sensitivity and specificityin gastric cancer (PMID:21945024)
- Expression of Kv1.4 appears to increase in the spinal cord of mice modelling remitting-relapsing experimental allergic encephalomyelitis (rrEAE) in peak and remitting phases. (PMID:22560931)
- statistically significant association between the KCNA4 rs1323860 C/T transition and endurance running performance level (PMID:30812034)
- Human adrenal glomerulosa cells express K2P and GIRK potassium channels that are inhibited by ANG II and ACTH. (PMID:34038243)
- An epilepsy-associated KV1.2 charge-transfer-center mutation impairs KV1.2 and KV1.4 trafficking. (PMID:35439054)
- miR-448 regulates potassium voltage-gated channel subfamily A member 4 (KCNA4) in ischemia and heart failure. (PMID:36693615)
Cross-species orthologs
3 orthologs
| Organism | Symbol | Gene ID |
|---|---|---|
| danio_rerio | kcna4 | ENSDARG00000078650 |
| mus_musculus | Kcna4 | ENSMUSG00000042604 |
| rattus_norvegicus | Kcna4 | ENSRNOG00000004918 |
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), KCNB2 (ENSG00000182674), KCNQ3 (ENSG00000184156), KCND2 (ENSG00000184408), KCNQ5 (ENSG00000185760)
Protein
Protein identifiers
Potassium voltage-gated channel subfamily A member 4 — P22459 (reviewed: P22459)
Alternative names: HPCN2, Voltage-gated K(+) channel HuKII, Voltage-gated potassium channel HBK4, Voltage-gated potassium channel HK1, Voltage-gated potassium channel subunit Kv1.4
All UniProt accessions (1): P22459
UniProt curated annotations — full annotation on UniProt →
Function. Voltage-gated potassium channel that mediates transmembrane potassium transport in excitable membranes. Forms tetrameric potassium-selective channels through which potassium ions pass in accordance with their electrochemical gradient. The channel alternates between opened and closed conformations in response to the voltage difference across the membrane. Can form functional homotetrameric channels and heterotetrameric channels that contain variable proportions of KCNA1, KCNA2, KCNA4, KCNA5, and possibly other family members as well; channel properties depend on the type of alpha subunits that are part of the channel. Channel properties are modulated by cytoplasmic beta subunits that regulate the subcellular location of the alpha subunits and promote rapid inactivation. In vivo, membranes probably contain a mixture of heteromeric potassium channel complexes, making it difficult to assign currents observed in intact tissues to any particular potassium channel family member. Homotetrameric KCNA4 forms a potassium channel that opens in response to membrane depolarization, followed by rapid spontaneous channel closure. Likewise, a heterotetrameric channel formed by KCNA1 and KCNA4 shows rapid inactivation.
Subunit / interactions. Homotetramer and heterotetramer of potassium channel proteins. Interacts with KCNAB1 and KCNAB2. Interacts with DLG1, DLG2 and DLG4 via their PDZ domains. Interacts with SIGMAR1. Detected in a complex with KCNA1. Interacts with KCNA2. Part of a complex containing KCNA1, KCNAB1 and LGI1. Interacts (via cytoplasmic N-terminal domain) with KCNRG.
Subcellular location. Cell membrane. Cell projection. Axon.
Tissue specificity. Expressed in brain, and at lower levels in the testis, lung, kidney, colon and heart. Detected in heart ventricle.
Disease relevance. Microcephaly, cataracts, impaired intellectual development, and dystonia with abnormal striatum (MCIDDS) [MIM:618284] An autosomal recessive syndrome characterized by cognitive impairment, attention deficit-hyperactivity disorder, microcephaly, growth retardation, congenital cataract, and dystonia. Brain MRI shows unusual thinning of the lentiform nucleus, predominantly involving the putamen, and swelling in the caudate heads. The disease may be caused by variants affecting the gene represented in this entry.
Activity regulation. Inhibited by 4-aminopyridine (4-AP), but not by tetraethylammonium (TEA) and charybdotoxin (CTX).
Domain organisation. The N-terminus may be important in determining the rate of inactivation of the channel while the tail may play a role in modulation of channel activity and/or targeting of the channel to specific subcellular compartments. The transmembrane segment S4 functions as a voltage-sensor and is characterized by a series of positively charged amino acids at every third position. Channel opening and closing is effected by a conformation change that affects the position and orientation of the voltage-sensor paddle formed by S3 and S4 within the membrane. A transmembrane electric field that is positive inside would push the positively charged S4 segment outwards, thereby opening the pore, while a field that is negative inside would pull the S4 segment inwards and close the pore. Changes in the position and orientation of S4 are then transmitted to the activation gate formed by the inner helix bundle via the S4-S5 linker region.
Similarity. Belongs to the potassium channel family. A (Shaker) (TC 1.A.1.2) subfamily. Kv1.4/KCNA4 sub-subfamily.
RefSeq proteins (1): NP_002224* (*=MANE)
Domains & families (InterPro)
| ID | Name | Type |
|---|---|---|
| IPR000210 | BTB/POZ_dom | Domain |
| IPR003131 | T1-type_BTB | Domain |
| IPR003968 | K_chnl_volt-dep_Kv | Family |
| IPR003972 | K_chnl_volt-dep_Kv1 | Family |
| IPR005821 | Ion_trans_dom | Domain |
| IPR011333 | SKP1/BTB/POZ_sf | Homologous_superfamily |
| IPR012897 | K_chnl_volt-dep_Kv1.4_TID | Domain |
| IPR020467 | K_chnl_volt-dep_Kv1.4 | Family |
| IPR027359 | Volt_channel_dom_sf | Homologous_superfamily |
| IPR028325 | VG_K_chnl | Family |
| IPR037065 | K_chnl_volt-dep_Kv1.4_TID_sf | Homologous_superfamily |
Pfam: PF00520, PF02214, PF07941
Catalyzed reactions (Rhea), 1 shown:
- K(+)(in) = K(+)(out) (RHEA:29463)
UniProt features (37 total): topological domain 8, transmembrane region 6, sequence conflict 6, compositionally biased region 4, region of interest 3, modified residue 3, intramembrane region 2, short sequence motif 2, chain 1, glycosylation site 1, sequence variant 1
Structure
Experimental structures (PDB)
0 structures.
Predicted structure (AlphaFold)
| Model | pLDDT | Fraction very-high |
|---|---|---|
| AF-P22459-F1 | 70.48 | 0.42 |
Functional residue map
Curated UniProt residues grouped by drug-discovery relevance — catalytic, ligand-binding, modification, and mutation-validated positions. Source: UniProtKB sequence features.
Post-translational modifications (3): 90, 122, 599
Glycosylation sites (1): 352
Function
Pathways and Gene Ontology
Reactome pathways
3 pathways
| ID | Pathway |
|---|---|
| R-HSA-1296072 | Voltage gated Potassium channels |
| R-HSA-112316 | Neuronal System |
| R-HSA-1296071 | Potassium Channels |
MSigDB gene sets: 710 (showing top):
GSE18804_SPLEEN_MACROPHAGE_VS_COLON_TUMORAL_MACROPHAGE_DN, GOBP_POTASSIUM_ION_TRANSPORT, GOBP_NUCLEOSIDE_DIPHOSPHATE_METABOLIC_PROCESS, HARRIS_HYPOXIA, REACTOME_VOLTAGE_GATED_POTASSIUM_CHANNELS, GOBP_INFLAMMATORY_RESPONSE, REACTOME_POTASSIUM_CHANNELS, GOBP_POSITIVE_REGULATION_OF_CYTOKINE_PRODUCTION_INVOLVED_IN_IMMUNE_RESPONSE, GOZGIT_ESR1_TARGETS_DN, GOBP_CARBOHYDRATE_DERIVATIVE_CATABOLIC_PROCESS, MCBRYAN_PUBERTAL_TGFB1_TARGETS_UP, GOBP_MONOSACCHARIDE_CATABOLIC_PROCESS, GOBP_CARBOHYDRATE_PHOSPHORYLATION, GOBP_ORGANOPHOSPHATE_METABOLIC_PROCESS, GOBP_POSITIVE_REGULATION_OF_CYTOKINE_PRODUCTION
GO Biological Process (8): action potential (GO:0001508), potassium ion transport (GO:0006813), protein homooligomerization (GO:0051260), potassium ion transmembrane transport (GO:0071805), monoatomic ion transport (GO:0006811), monoatomic ion transmembrane transport (GO:0034220), transmembrane transport (GO:0055085), regulation of presynaptic membrane potential (GO:0099505)
GO Molecular Function (7): voltage-gated potassium channel activity (GO:0005249), delayed rectifier potassium channel activity (GO:0005251), potassium ion binding (GO:0030955), voltage-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential (GO:0099508), monoatomic ion channel activity (GO:0005216), potassium channel activity (GO:0005267), protein binding (GO:0005515)
GO Cellular Component (8): plasma membrane (GO:0005886), voltage-gated potassium channel complex (GO:0008076), membrane (GO:0016020), axon (GO:0030424), axon initial segment (GO:0043194), dendritic spine (GO:0043197), monoatomic ion channel complex (GO:0034702), cell projection (GO:0042995)
Reactome top-level categories
Rollup of top-2 pathways:
| Category | Pathways |
|---|---|
| Potassium Channels | 1 |
| Neuronal System | 1 |
GO top-level categories
Rollup of top GO terms by namespace:
| Category | Terms |
|---|---|
| cellular anatomical structure | 3 |
| regulation of membrane potential | 2 |
| transport | 2 |
| metal ion transport | 1 |
| protein complex oligomerization | 1 |
| potassium ion transport | 1 |
| monoatomic cation transmembrane transport | 1 |
| monoatomic ion transport | 1 |
| transmembrane transport | 1 |
| cellular process | 1 |
| potassium channel activity | 1 |
| voltage-gated monoatomic cation channel activity | 1 |
| voltage-gated potassium channel activity | 1 |
| alkali metal ion binding | 1 |
| voltage-gated monoatomic ion channel activity | 1 |
| presynaptic membrane | 1 |
| regulation of presynaptic membrane potential | 1 |
| monoatomic ion transmembrane transporter activity | 1 |
| channel activity | 1 |
| monoatomic cation channel activity | 1 |
| potassium ion transmembrane transporter activity | 1 |
| binding | 1 |
| membrane | 1 |
| cell periphery | 1 |
| potassium channel complex | 1 |
| plasma membrane protein complex | 1 |
| neuron projection | 1 |
| main axon | 1 |
| dendrite | 1 |
| neuron spine | 1 |
| postsynapse | 1 |
| transmembrane transporter complex | 1 |
Protein interactions and networks
STRING
2084 interactions, top by confidence (×1000):
| Protein A | Protein B | Partner UniProt | Score |
|---|---|---|---|
| KCNA4 | DLG4 | P78352 | 976 |
| KCNA4 | KCNA1 | Q09470 | 969 |
| KCNA4 | KCNAB2 | Q13303 | 962 |
| KCNA4 | KCNAB1 | Q14722 | 962 |
| KCNA4 | KCNA2 | P16389 | 960 |
| KCNA4 | SIGMAR1 | Q99720 | 913 |
| KCNA4 | KCNIP2 | Q9NS61 | 902 |
| KCNA4 | KCNAB3 | O43448 | 897 |
| KCNA4 | DLG2 | Q15700 | 853 |
| KCNA4 | DLGAP1 | P78335 | 757 |
| KCNA4 | KCNH6 | Q9H252 | 742 |
| KCNA4 | ACTN2 | P35609 | 711 |
| KCNA4 | KCNH2 | Q12809 | 708 |
| KCNA4 | KCND3 | Q9UK17 | 691 |
| KCNA4 | SCN5A | Q14524 | 660 |
IntAct
141 interactions, top by confidence:
| A | B | Type | Score |
|---|---|---|---|
| DLG1 | KCNA4 | psi-mi:“MI:0915”(physical association) | 0.790 |
| KCNA4 | DLG1 | psi-mi:“MI:0407”(direct interaction) | 0.790 |
| DLG1 | KCNA4 | psi-mi:“MI:0407”(direct interaction) | 0.790 |
| Dlg4 | KCNA4 | psi-mi:“MI:0915”(physical association) | 0.680 |
| KCNA4 | DLG4 | psi-mi:“MI:0407”(direct interaction) | 0.680 |
| Dlg4 | KCNA4 | psi-mi:“MI:0407”(direct interaction) | 0.680 |
| DLG4 | KCNA4 | psi-mi:“MI:0407”(direct interaction) | 0.680 |
| SAT1 | KCNA4 | psi-mi:“MI:0915”(physical association) | 0.670 |
| DLG3 | KCNA4 | psi-mi:“MI:0407”(direct interaction) | 0.590 |
| KCNA4 | SCRIB | psi-mi:“MI:0407”(direct interaction) | 0.590 |
| KCNA4 | SNTB1 | psi-mi:“MI:0407”(direct interaction) | 0.590 |
| KCNA4 | DLG3 | psi-mi:“MI:0407”(direct interaction) | 0.590 |
| KCNA4 | CASK | psi-mi:“MI:0407”(direct interaction) | 0.590 |
| MPP7 | KCNA4 | psi-mi:“MI:0407”(direct interaction) | 0.590 |
| KCNA4 | Dlg3 | psi-mi:“MI:0407”(direct interaction) | 0.560 |
| KCNA4 | ACTN2 | psi-mi:“MI:0915”(physical association) | 0.530 |
| ACTN2 | KCNA4 | psi-mi:“MI:0407”(direct interaction) | 0.530 |
| KCNA4 | MAST2 | psi-mi:“MI:0407”(direct interaction) | 0.440 |
BioGRID (86): DLG1 (Two-hybrid), KCNA4 (Two-hybrid), KCNA4 (Two-hybrid), KCNA4 (Two-hybrid), DLG4 (Affinity Capture-Western), DLG2 (Affinity Capture-Western), DLG1 (Affinity Capture-Western), KCNA4 (Reconstituted Complex), KCNA4 (Affinity Capture-Western), KCNA4 (Affinity Capture-Western), KCNA4 (Affinity Capture-Western), KCNA2 (Affinity Capture-Western), KCNA1 (Affinity Capture-Western), DLG4 (Reconstituted Complex), DLG4 (Two-hybrid)
ESM2 similar proteins: A1Z8N1, B0UYF2, B3MG58, B3NSE1, B4GAP7, B4HNS0, B4J913, B4KR05, B4LPX5, B4MYA4, B4P624, B4QBN2, D4AYW0, O18868, O18965, O95259, P15385, P22459, P22462, P27448, P57789, Q02280, Q03141, Q05037, Q0P5V9, Q14721, Q14B80, Q17NV8, Q28527, Q291H8, Q2KNE5, Q5BKX6, Q60603, Q61423, Q63472, Q7PIR5, Q8BUW1, Q8IRI6, Q8NCM2, Q920E3
Diamond homologs: A2BDX4, A4K2M4, A4K2N8, A4K2P6, A4K2Q6, A4K2R3, A4K2S2, A4K2T1, A4K2V2, A4K2W6, A4K2X4, A4K2Y2, A6H8H5, D4AD53, D4ADX7, G5EFC3, O18868, O35173, O35174, O73606, O88758, O88759, P10499, P15384, P15385, P15387, P15388, P16388, P16390, P17970, P17971, P17972, P22001, P22459, P22739, P25122, P48547, P59053, P59994, P59995
SIGNOR signaling
3 interactions.
| A | Effect | B | Mechanism |
|---|---|---|---|
| PKA | “down-regulates activity” | KCNA4 | phosphorylation |
| PKA | “down-regulates quantity by destabilization” | KCNA4 | phosphorylation |
| LNX1 | “down-regulates quantity by destabilization” | KCNA4 | ubiquitination |
Enriched among interaction partners
Reactome pathways and GO biological processes over-represented among this gene’s 86 IntAct physical interaction partners (hypergeometric vs the genome-wide background, BH-FDR, gene-set size 15–500, ranked by fold). A functional readout of the neighbourhood — distinct from this gene’s own memberships above, and biased toward well-studied / hub proteins, so read it as themes rather than proof.
Reactome pathways:
| Pathway | Partners | Fold | FDR |
|---|---|---|---|
| Ras activation upon Ca2+ influx through NMDA receptor | 5 | 51.0× | 2e-06 |
| Unblocking of NMDA receptors, glutamate binding and activation | 5 | 48.5× | 2e-06 |
| Negative regulation of NMDA receptor-mediated neuronal transmission | 5 | 48.5× | 2e-06 |
| Assembly and cell surface presentation of NMDA receptors | 10 | 45.3× | 1e-12 |
| Dopamine Neurotransmitter Release Cycle | 5 | 44.3× | 3e-06 |
| Long-term potentiation | 5 | 42.5× | 3e-06 |
| Neurexins and neuroligins | 11 | 38.7× | 7e-13 |
| Protein-protein interactions at synapses | 7 | 33.2× | 1e-07 |
GO biological processes:
| GO term | Partners | Fold | FDR |
|---|---|---|---|
| establishment or maintenance of epithelial cell apical/basal polarity | 10 | 73.6× | 3e-14 |
| protein localization to synapse | 6 | 58.2× | 1e-07 |
| receptor clustering | 6 | 47.4× | 2e-07 |
| regulation of postsynaptic membrane neurotransmitter receptor levels | 7 | 43.9× | 5e-08 |
| cell-cell adhesion | 9 | 11.6× | 6e-06 |
| protein-containing complex assembly | 8 | 11.5× | 3e-05 |
| chemical synaptic transmission | 7 | 6.8× | 2e-03 |
| protein transport | 8 | 4.4× | 7e-03 |
Disease & clinical
Clinical variants and AI predictions
ClinVar
937 variants total. Per-class counts are floors (≥ shown; pagination cap):
| Classification | Count (floor) |
|---|---|
| Pathogenic | 11 |
| Likely pathogenic | 22 |
| Uncertain significance | 501 |
| Likely benign | 303 |
| Benign | 32 |
Top pathogenic / likely-pathogenic (30)
| Variant ID | HGVS | Classification |
|---|---|---|
| 1417253 | NM_000188.3(HK1):c.1907_1910del (p.Thr635_Leu636insTer) | Pathogenic |
| 1442714 | NM_000188.3(HK1):c.2380C>T (p.Arg794Ter) | Pathogenic |
| 14915 | NM_000188.3(HK1):c.497_591+1del | Pathogenic |
| 14916 | NM_000188.3(HK1):c.1586T>C (p.Leu529Ser) | Pathogenic |
| 2038014 | NM_000188.3(HK1):c.267del (p.Arg91fs) | Pathogenic |
| 2115913 | NM_000188.3(HK1):c.442_473dup (p.Gln159fs) | Pathogenic |
| 2664015 | NM_000188.3(HK1):c.991C>T (p.Arg331Ter) | Pathogenic |
| 3608703 | NM_000188.3(HK1):c.919C>T (p.Arg307Ter) | Pathogenic |
| 4766093 | NM_000188.3(HK1):c.2305C>T (p.Arg769Ter) | Pathogenic |
| 55851 | NM_000188.3(HK1):c.2039C>G (p.Thr680Ser) | Pathogenic |
| 855341 | NM_000188.3(HK1):c.1456del (p.Glu486fs) | Pathogenic |
| 1320105 | NM_000188.3(HK1):c.796G>A (p.Asp266Asn) | Likely pathogenic |
| 1465743 | NM_000188.3(HK1):c.1240G>C (p.Gly414Arg) | Likely pathogenic |
| 1685345 | NM_001358263.1(HK1):c.1A>T (p.Met1Leu) | Likely pathogenic |
| 2024756 | NM_000188.3(HK1):c.226+2T>A | Likely pathogenic |
| 2105231 | NM_000188.3(HK1):c.691+1G>A | Likely pathogenic |
| 2422554 | NC_000010.10:g.(?71103563)(71103765_?)dup | Likely pathogenic |
| 2506469 | NM_000188.3(HK1):c.1370C>A (p.Thr457Lys) | Likely pathogenic |
| 2581721 | NM_000188.3(HK1):c.613del (p.Ala205fs) | Likely pathogenic |
| 3028181 | NM_000188.3(HK1):c.409T>A (p.Phe137Ile) | Likely pathogenic |
| 3544385 | NM_000188.3(HK1):c.1370C>G (p.Thr457Arg) | Likely pathogenic |
| 4057299 | NM_001358263.1(HK1):c.2T>C (p.Met1Thr) | Likely pathogenic |
| 4081443 | NM_000188.3(HK1):c.891dup (p.Ser298fs) | Likely pathogenic |
| 4532805 | Single allele | Likely pathogenic |
| 4687917 | NM_000188.3(HK1):c.1542del (p.Phe515fs) | Likely pathogenic |
| 4718497 | NM_000188.3(HK1):c.876-2A>T | Likely pathogenic |
| 4755525 | NM_000188.3(HK1):c.2354A>T (p.Lys785Met) | Likely pathogenic |
| 4823068 | NM_000188.3(HK1):c.226+4919T>G | Likely pathogenic |
| 4845902 | NM_000188.3(HK1):c.1114C>T (p.Gln372Ter) | Likely pathogenic |
| 599646 | NM_000188.3(HK1):c.1252A>G (p.Lys418Glu) | Likely pathogenic |
SpliceAI
400 predictions. Top by Δscore:
| Variant | Effect | Δscore |
|---|---|---|
| 11:30016568:TTA:T | donor_loss | 0.9800 |
| 11:30016571:CCGTT:C | donor_gain | 0.9800 |
| 11:30016570:A:AC | donor_gain | 0.9700 |
| 11:30016570:AC:A | donor_gain | 0.9700 |
| 11:30016571:C:CC | donor_gain | 0.9700 |
| 11:30016571:CC:C | donor_gain | 0.9700 |
| 11:30015922:ACC:A | donor_gain | 0.9600 |
| 11:30015923:CCC:C | donor_gain | 0.9600 |
| 11:30016571:CCG:C | donor_gain | 0.9500 |
| 11:30016571:CCGT:C | donor_gain | 0.9400 |
| 11:30013461:C:CA | acceptor_loss | 0.9300 |
| 11:30016566:A:AC | donor_gain | 0.9200 |
| 11:30016567:C:CC | donor_gain | 0.9200 |
| 11:30014612:CA:C | donor_gain | 0.9000 |
| 11:30014612:CACTT:C | donor_gain | 0.9000 |
| 11:30016566:ACTT:A | donor_loss | 0.8900 |
| 11:30014607:T:TA | donor_gain | 0.8800 |
| 11:30014616:T:TA | donor_gain | 0.8800 |
| 11:30013472:T:TC | acceptor_gain | 0.8700 |
| 11:30012707:CAGT:C | acceptor_gain | 0.8400 |
| 11:30013461:C:CC | acceptor_gain | 0.8400 |
| 11:30016930:A:AC | donor_gain | 0.8400 |
| 11:30016058:C:CT | donor_gain | 0.8300 |
| 11:30014685:T:TA | donor_gain | 0.8200 |
| 11:30013484:A:C | acceptor_gain | 0.8100 |
| 11:30015918:T:TA | donor_gain | 0.8000 |
| 11:30013458:CAC:C | acceptor_gain | 0.7800 |
| 11:30014603:ACAAT:A | donor_gain | 0.7800 |
| 11:30014604:CAAT:C | donor_gain | 0.7800 |
| 11:30014604:CAATC:C | donor_gain | 0.7800 |
AlphaMissense
4332 scored. Top likely-pathogenic:
| Variant | Protein change | am_pathogenicity |
|---|---|---|
| 11:30010980:A:C | Y567D | 1.000 |
| 11:30010981:G:C | F566L | 1.000 |
| 11:30010981:G:T | F566L | 1.000 |
| 11:30010982:A:G | F566S | 1.000 |
| 11:30010983:A:G | F566L | 1.000 |
| 11:30010990:A:C | F563L | 1.000 |
| 11:30010990:A:T | F563L | 1.000 |
| 11:30010991:A:C | F563C | 1.000 |
| 11:30010991:A:G | F563S | 1.000 |
| 11:30010992:A:C | F563V | 1.000 |
| 11:30010992:A:G | F563L | 1.000 |
| 11:30010992:A:T | F563I | 1.000 |
| 11:30010993:G:C | N562K | 1.000 |
| 11:30010993:G:T | N562K | 1.000 |
| 11:30010994:T:A | N562I | 1.000 |
| 11:30010995:T:C | N562D | 1.000 |
| 11:30010997:G:A | S561F | 1.000 |
| 11:30010998:A:G | S561P | 1.000 |
| 11:30011000:A:G | V560A | 1.000 |
| 11:30011000:A:T | V560D | 1.000 |
| 11:30011001:C:G | V560L | 1.000 |
| 11:30011003:A:C | I559S | 1.000 |
| 11:30011003:A:T | I559N | 1.000 |
| 11:30011006:A:T | V558E | 1.000 |
| 11:30011009:G:C | P557R | 1.000 |
| 11:30011009:G:T | P557Q | 1.000 |
| 11:30011010:G:A | P557S | 1.000 |
| 11:30011012:A:G | V556A | 1.000 |
| 11:30011012:A:T | V556E | 1.000 |
| 11:30011015:G:C | P555R | 1.000 |
dbSNP variants (sampled 300 via entrez): RS1000523863 (11:30016095 A>C,G), RS1000564900 (11:30015797 A>C), RS1000761055 (11:30010361 T>C), RS1000988922 (11:30017504 GC>G), RS1001377260 (11:30014718 C>A), RS1001614858 (11:30012511 A>C), RS1002020752 (11:30015322 C>T), RS1002888016 (11:30013066 A>G), RS1003021951 (11:30013472 T>C), RS1003894683 (11:30011841 C>T), RS1004376850 (11:30016466 C>G,T), RS1004653038 (11:30009514 T>C), RS1004812392 (11:30016199 A>G), RS1005171397 (11:30017124 A>G), RS1005330567 (11:30013651 T>C)
Disease associations
OMIM: gene MIM:176266 | disease phenotypes: MIM:605285, MIM:618547, MIM:618284, MIM:235700, MIM:617460, MIM:268000
GenCC curated gene-disease
| Disease | Classification | Inheritance |
|---|---|---|
| non-spherocytic hemolytic anemia due to hexokinase deficiency | Strong | Autosomal recessive |
| Charcot-Marie-Tooth disease type 4G | Strong | Autosomal recessive |
| retinitis pigmentosa 79 | Strong | Autosomal dominant |
| neurodevelopmental disorder with visual defects and brain anomalies | Strong | Autosomal dominant |
| hyperinsulinism | Strong | Autosomal dominant |
| microcephaly, cataracts, impaired intellectual development, and dystonia with abnormal striatum | Limited | Autosomal recessive |
Mondo (10): Charcot-Marie-Tooth disease type 4G (MONDO:0011534), neurodevelopmental disorder with visual defects and brain anomalies (MONDO:0032807), inherited retinal dystrophy (MONDO:0019118), microcephaly, cataracts, impaired intellectual development, and dystonia with abnormal striatum (MONDO:0032656), non-spherocytic hemolytic anemia due to hexokinase deficiency (MONDO:0009340), retinitis pigmentosa 79 (MONDO:0044320), neurodevelopmental disorder (MONDO:0700092), retinitis pigmentosa (MONDO:0019200), autism spectrum disorder (MONDO:0005258), hyperinsulinism (MONDO:0002177)
Orphanet (5): Charcot-Marie-Tooth disease type 4G (Orphanet:99953), OBSOLETE: Inherited retinal disorder (Orphanet:71862), Non-spherocytic hemolytic anemia due to hexokinase deficiency (Orphanet:90031), Retinitis pigmentosa (Orphanet:791), NON RARE IN EUROPE: Autism (Orphanet:106)
HPO phenotypes
113 total (30 of 113 shown, HPO-id order):
| HPO | Term |
|---|---|
| HP:0000006 | Autosomal dominant inheritance |
| HP:0000007 | Autosomal recessive inheritance |
| HP:0000219 | Thin upper lip vermilion |
| HP:0000252 | Microcephaly |
| HP:0000286 | Epicanthus |
| HP:0000365 | Hearing impairment |
| HP:0000414 | Bulbous nose |
| HP:0000463 | Anteverted nares |
| HP:0000473 | Torticollis |
| HP:0000483 | Astigmatism |
| HP:0000486 | Strabismus |
| HP:0000501 | Glaucoma |
| HP:0000508 | Ptosis |
| HP:0000510 | Rod-cone dystrophy |
| HP:0000519 | Developmental cataract |
| HP:0000543 | Optic disc pallor |
| HP:0000613 | Photophobia |
| HP:0000639 | Nystagmus |
| HP:0000648 | Optic atrophy |
| HP:0000662 | Nyctalopia |
| HP:0000687 | Widely spaced teeth |
| HP:0000750 | Delayed speech and language development |
| HP:0000952 | Jaundice |
| HP:0001081 | Cholelithiasis |
| HP:0001082 | Cholecystitis |
| HP:0001133 | Constriction of peripheral visual field |
| HP:0001155 | Abnormality of the hand |
| HP:0001249 | Intellectual disability |
| HP:0001251 | Ataxia |
| HP:0001260 | Dysarthria |
GWAS associations
64 associations (top):
| Study | Trait | p-value |
|---|---|---|
| GCST000303_1 | Glycated hemoglobin levels | 2.000000e-25 |
| GCST000499_5 | Hemoglobin | 2.000000e-11 |
| GCST000502_4 | Hematocrit | 1.000000e-13 |
| GCST000585_9 | Mean corpuscular volume | 2.000000e-29 |
| GCST000587_9 | Mean corpuscular hemoglobin | 3.000000e-25 |
| GCST000588_4 | Red blood cell count | 2.000000e-17 |
| GCST000803_10 | Glycated hemoglobin levels | 3.000000e-54 |
| GCST001765_8 | Red blood cell traits | 4.000000e-20 |
| GCST002110_3 | Glycemic traits (pregnancy) | 1.000000e-22 |
| GCST003993_6 | Menarche (age at onset) | 2.000000e-08 |
| GCST004005_6 | Hemoglobin levels | 1.000000e-08 |
| GCST004601_123 | Red blood cell count | 2.000000e-48 |
| GCST004602_185 | Mean corpuscular volume | 7.000000e-55 |
| GCST004604_54 | Hematocrit | 8.000000e-159 |
| GCST004611_173 | High light scatter reticulocyte count | 3.000000e-69 |
| GCST004612_110 | High light scatter reticulocyte percentage of red cells | 3.000000e-53 |
| GCST004615_67 | Hemoglobin concentration | 1.000000e-156 |
| GCST004619_97 | Reticulocyte fraction of red cells | 3.000000e-72 |
| GCST004621_15 | Red cell distribution width | 2.000000e-11 |
| GCST004622_31 | Reticulocyte count | 2.000000e-96 |
| GCST004628_40 | Immature fraction of reticulocytes | 1.000000e-11 |
| GCST004630_240 | Mean corpuscular hemoglobin | 4.000000e-44 |
| GCST005093_1 | Iris color (a* coordinate) | 6.000000e-06 |
| GCST005096_5 | Iris color (b* coordinate) | 3.000000e-07 |
| GCST005269_3 | Luteinizing hormone levels in polycystic ovary syndrome | 3.000000e-16 |
| GCST005273_5 | Polycystic ovary syndrome | 2.000000e-08 |
| GCST006060_1 | Hemoglobin A1c levels | 1.000000e-06 |
| GCST006291_48 | Spherical equivalent or myopia (age of diagnosis) | 1.000000e-11 |
| GCST007094_40 | Diastolic blood pressure | 1.000000e-06 |
| GCST007099_157 | Systolic blood pressure | 3.000000e-08 |
EFO canonical traits (23, from GWAS)
| EFO ID | Trait name |
|---|---|
| EFO:0004541 | HbA1c measurement |
| EFO:0004509 | hemoglobin measurement |
| EFO:0004348 | hematocrit |
| EFO:0004527 | mean corpuscular hemoglobin |
| EFO:0004305 | erythrocyte count |
| EFO:0004307 | glucose tolerance test |
| EFO:0004703 | age at menarche |
| EFO:0007986 | reticulocyte count |
| EFO:0009188 | Red cell distribution width |
| EFO:0003949 | eye color |
| EFO:0007629 | hemoglobin A1 measurement |
| EFO:0004847 | age at onset |
| EFO:0006336 | diastolic blood pressure |
| EFO:0006335 | systolic blood pressure |
| EFO:0004344 | birth weight |
| EFO:0005939 | parental genotype effect measurement |
| EFO:0004611 | low density lipoprotein cholesterol measurement |
| EFO:0004612 | high density lipoprotein cholesterol measurement |
| EFO:0004615 | apolipoprotein B measurement |
| EFO:0004459 | ferritin measurement |
| EFO:0009473 | hemolysis |
| EFO:0010701 | mean reticulocyte volume |
| EFO:0007985 | platelet crit |
MeSH disease descriptors (6)
| Descriptor | Name | Tree numbers |
|---|---|---|
| D006946 | Hyperinsulinism | C18.452.394.968 |
| D065886 | Neurodevelopmental Disorders | F03.625 |
| D058499 | Retinal Dystrophies | C11.768.585.658 |
| D012174 | Retinitis Pigmentosa | C11.270.684; C11.768.585.658.500; C16.320.290.684 |
| C562995 | Hexokinase Deficiency Hemolytic Anemia (supp.) | |
| C535813 | Neuropathy, hereditary motor and sensory, Russe type (supp.) |
Drugs & pharmacology
Drug and pharmacology data
Is drug target: yes
ChEMBL targets (2): CHEMBL2362996 (PROTEIN FAMILY), CHEMBL4205 (SINGLE PROTEIN)
PharmGKB: 1 entry (VIP=true, CPIC=false)
GtoPdb / IUPHAR curated pharmacology
(IUPHAR/BPS Guide to Pharmacology — expert-curated)
Target class: vgic — Voltage-gated potassium channels (Kv)
Most potent curated ligand interactions (4 total), top 4:
| Ligand | Action | Affinity | Parameter |
|---|---|---|---|
| CP-339818 | Channel blocker | 6.5 | pIC50 |
| nicardipine | Channel blocker | 6.1 | pIC50 |
| quinidine | Channel blocker | 3.7 | pIC50 |
| fampridine | Channel blocker | 1.9 | pIC50 |
ChEMBL bioactivities
13 potent at pChembl≥5 of 19 total, top 13 by pChembl (potency: 10 = 0.1 nM, 6 = 1 µM).
| pChembl | Type | Value | Unit | Molecule |
|---|---|---|---|---|
| 9.82 | Ki | 0.15 | nM | CHEMBL5722941 |
| 9.74 | IC50 | 0.18 | nM | CHEMBL5722941 |
| 7.12 | EC50 | 75 | nM | CHEMBL444449 |
| 6.77 | IC50 | 170 | nM | CHEMBL444449 |
| 6.30 | EC50 | 500 | nM | CHEMBL3906400 |
| 5.89 | EC50 | 1300 | nM | CHEMBL259345 |
| 5.82 | IC50 | 1500 | nM | CHEMBL4207745 |
| 5.68 | IC50 | 2100 | nM | OROIDIN |
| 5.64 | EC50 | 2300 | nM | CHEMBL408488 |
| 5.37 | EC50 | 4300 | nM | CHEMBL426482 |
| 5.32 | EC50 | 4800 | nM | CHEMBL382154 |
| 5.28 | IC50 | 5300 | nM | CHEMBL3621636 |
| 5.06 | IC50 | 8800 | nM | CHEMBL3261431 |
PubChem BioAssay actives
11 with measured affinity, of 57 total; 10 most potent distinct compounds. Largely complementary to BindingDB; screening values are coarse (µM, 4 dp), so sub-nM hits tie at the floor.
| Compound | Assay | Type | Value | Unit |
|---|---|---|---|---|
| 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 acid | 2198828: Binding affinity to KV channel (unknown origin) assessed as inhibition constant | ki | 0.0001 | uM |
| 4-(4-phenoxybutoxy)furo[3,2-g]chromen-7-one | 1379138: Inhibition of human Kv1.4 expressed in CHO cells at -80 mV holding potential by whole cell automated patch clamp method | ic50 | 0.1700 | uM |
| 5-bromo-5-nitro-2-phenyl-1,3-dioxane | 323747: Inhibition of Kv1.4 channel inactivation expressed in xenopus oocytes by voltage clamp assay | ec50 | 1.3000 | uM |
| N-[(E)-3-(2-amino-1H-imidazol-5-yl)prop-2-enyl]-4,5-dichloro-1H-pyrrole-2-carboxamide | 1379138: Inhibition of human Kv1.4 expressed in CHO cells at -80 mV holding potential by whole cell automated patch clamp method | ic50 | 1.5000 | uM |
| N-[(E)-3-(2-amino-1H-imidazol-5-yl)prop-2-enyl]-4,5-dibromo-1H-pyrrole-2-carboxamide | 1379138: Inhibition of human Kv1.4 expressed in CHO cells at -80 mV holding potential by whole cell automated patch clamp method | ic50 | 2.1000 | uM |
| 5-bromo-2,2-dimethyl-5-nitro-1,3-dioxane | 323747: Inhibition of Kv1.4 channel inactivation expressed in xenopus oocytes by voltage clamp assay | ec50 | 2.3000 | uM |
| 1-[7-[(4-bromophenyl)methoxy]-6-hydroxy-4-methoxy-1-benzofuran-5-yl]ethanone | 261020: Effect on blockade of Kv1.4 channel | ec50 | 4.3000 | uM |
| 1-[4-[(4-chlorophenyl)methoxy]-6-hydroxy-7-methoxy-1-benzofuran-5-yl]ethanone | 261020: Effect on blockade of Kv1.4 channel | ec50 | 4.8000 | uM |
| N-[(E)-3-(2-amino-1H-imidazol-5-yl)prop-2-enyl]-4-bromo-1H-pyrrole-2-carboxamide | 1379138: Inhibition of human Kv1.4 expressed in CHO cells at -80 mV holding potential by whole cell automated patch clamp method | ic50 | 5.3000 | uM |
| N-[(E)-3-(2-amino-1H-imidazol-5-yl)prop-2-enyl]-5-fluoro-1H-indole-2-carboxamide | 1379138: Inhibition of human Kv1.4 expressed in CHO cells at -80 mV holding potential by whole cell automated patch clamp method | ic50 | 8.8000 | uM |
CTD chemical–gene interactions
18 total (human), top 18 by PubMed support.
| Chemical | Actions (top 5) | PubMed papers |
|---|---|---|
| bisphenol A | affects cotreatment, decreases methylation | 1 |
| testosterone-3-carboxymethyloxime-bovine serum albumin conjugate | decreases expression | 1 |
| CGP 52608 | affects binding, increases reaction | 1 |
| 2-palmitoylglycerol | increases expression | 1 |
| Resveratrol | affects cotreatment, decreases expression | 1 |
| Fulvestrant | affects cotreatment, decreases methylation | 1 |
| Arsenic | increases methylation | 1 |
| Atrazine | increases expression | 1 |
| Benzo(a)pyrene | affects methylation | 1 |
| Copper | affects cotreatment, decreases expression | 1 |
| Diethylhexyl Phthalate | decreases expression | 1 |
| Doxorubicin | decreases expression | 1 |
| Phthalic Acids | decreases methylation | 1 |
| Dronabinol | decreases expression | 1 |
| Valproic Acid | decreases methylation | 1 |
| Aflatoxin B1 | decreases methylation | 1 |
| Asbestos, Serpentine | increases methylation | 1 |
| Uranium Compounds | increases expression | 1 |
ChEMBL screening assays
30 unique, capped per target: 26 binding, 2 admet, 1 toxicity, 1 functional
Representative assays (with source publication via chembl_document):
| Assay ID | Type | Description | Source paper |
|---|---|---|---|
| CHEMBL1787442 | Binding | Inhibition of human recombinant Kv channel at 10 uM by radioligand binding assay | Structure-activity relationships of pyrrole based S-nitrosoglutathione reductase inhibitors: pyrrole regioisomers and propionic acid replacement. — Bioorg Med Chem Lett |
| CHEMBL5522525 | Toxicity | Inhibition of human K+ channel by automated electrophysiology | Discovery of Clinical Candidate AZD5462, a Selective Oral Allosteric RXFP1 Agonist for Treatment of Heart Failure. — J Med Chem |
| CHEMBL4009576 | ADMET | Inhibition of Kv1.4 (unknown origin) expressed in HEK293 cells by whole cell patch clamp Qpatch method | A Rational Design of a Selective Inhibitor for Kv1.1 Channels Prevalent in Demyelinated Nerves That Improves Their Impaired Axonal Conduction. — J Med Chem |
Cellosaurus cell lines
3 cell lines: 2 spontaneously immortalized cell line, 1 transformed cell line
First 10 cell lines (id-ordered, not curated):
| Cellosaurus | Name | Category | Sex |
|---|---|---|---|
| CVCL_C0Y0 | B’SYS CHO Kv1.4 | Spontaneously immortalized cell line | Female |
| CVCL_D1JX | PrecisION hKv1.4-CHO | Spontaneously immortalized cell line | Female |
| CVCL_E5JH | HEK293 Kv1.4 | Transformed cell line | Female |
Clinical trials (associated diseases)
297 trials via MONDO — disease-level, not drug-specific.
| Trial | Phase | Status | Title |
|---|---|---|---|
| NCT04586348 | PHASE4 | UNKNOWN | Prenatal Iodine Supplementation and Early Childhood Neurodevelopment |
| NCT04873115 | PHASE4 | UNKNOWN | Double-blind, Placebo-controlled, Randomized Clinical Trial Comparing the Efficacy and Safety of Sialanar Plus orAl rehabiLitation Against Placebo Plus Oral Rehabilitation for chIldren and Adolescents With seVere Sialorrhoea and Neurodisabilties, |
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Related Atlas pages
- Associated diseases: non-spherocytic hemolytic anemia due to hexokinase deficiency, Charcot-Marie-Tooth disease type 4G, retinitis pigmentosa 79, neurodevelopmental disorder with visual defects and brain anomalies, microcephaly, cataracts, impaired intellectual development, and dystonia with abnormal striatum, hyperinsulinism
- Targeted by drugs: Dalfampridine, Nicardipine, Quinidine
- Disease cohort memberships (association, not causation — diseases whose associated-gene cohort lists this gene; a subset are also under Associated diseases): Charcot-Marie-Tooth disease type 4G, hyperinsulinism, microcephaly, cataracts, impaired intellectual development, and dystonia with abnormal striatum, neurodevelopmental disorder with visual defects and brain anomalies, non-spherocytic hemolytic anemia due to hexokinase deficiency, polycystic ovary syndrome, retinitis pigmentosa 79