SLC22A6

gene
On this page

Also known as ROAT1PAHTOAT1

Summary

SLC22A6 (solute carrier family 22 member 6, HGNC:10970) is a protein-coding gene on chromosome 11q12.3, encoding Solute carrier family 22 member 6 (Q4U2R8). Secondary active transporter that functions as a Na(+)-independent organic anion (OA)/dicarboxylate antiporter where the uptake of one molecule of OA into the cell is coupled with an efflux of one molecule of intracellular dicarboxylate such as 2-oxoglutarate or glutarate.

The protein encoded by this gene is involved in the sodium-dependent transport and excretion of organic anions, some of which are potentially toxic. The encoded protein is an integral membrane protein and may be localized to the basolateral membrane. Four transcript variants encoding four different isoforms have been found for this gene.

Source: NCBI Gene 9356 — RefSeq curated summary.

At a glance

  • GWAS associations: 2
  • Clinical variants (ClinVar): 87 total
  • Druggable target: yes — 32 molecules with ChEMBL bioactivity
  • MANE Select transcript: NM_153276

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:10970
Approved symbolSLC22A6
Namesolute carrier family 22 member 6
Location11q12.3
Locus typegene with protein product
StatusApproved
AliasesROAT1, PAHT, OAT1
Ensembl geneENSG00000197901
Ensembl biotypeprotein_coding
OMIM607582
Entrez9356

Gene structure

Transcript identifiers

Ensembl transcripts: 7 — 5 protein_coding, 1 protein_coding_CDS_not_defined, 1 nonsense_mediated_decay

ENST00000360421, ENST00000377871, ENST00000421062, ENST00000458333, ENST00000537349, ENST00000540654, ENST00000856538

RefSeq mRNA: 4 — MANE Select: NM_153276 NM_004790, NM_153276, NM_153277, NM_153278

CCDS: CCDS31591, CCDS44631, CCDS44632, CCDS8041

Canonical transcript exons

ENST00000360421 — 10 exons

ExonStartEnd
ENSE000013504816298394462984047
ENSE000013882856298432262984967
ENSE000015191266297659762976881
ENSE000035231446297948862979596
ENSE000035258896297973462979948
ENSE000035485116298184262982010
ENSE000035611776298353762983691
ENSE000035751896297718462977387
ENSE000036090816298098562981100
ENSE000036901456298126062981383

Expression profiles

Bgee: expression breadth broad, 63 present calls, max score 93.93.

FANTOM5 (CAGE): breadth tissue_specific, TPM avg 0.6831 / max 286.8650, expressed in 89 samples.

FANTOM5 promoters (7 alternative TSS)

Promoter IDTPM avgSamples expressed
1202690.299010
1202660.196680
1202670.113046
1202650.035120
1202710.01479
1202680.01428
1202700.01056

Top tissues by expression

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

TissueAnatomy IDExpression scoreQuality
adult mammalian kidneyUBERON:000008293.93gold quality
nephron tubuleUBERON:000123192.49gold quality
kidney epitheliumUBERON:000481991.69gold quality
adult organismUBERON:000702390.94gold quality
renal glomerulusUBERON:000007488.88gold quality
metanephric glomerulusUBERON:000473688.87gold quality
kidneyUBERON:000211388.29gold quality
renal medullaUBERON:000036282.96gold quality
cortex of kidneyUBERON:000122582.16gold quality
metanephrosUBERON:000008179.10gold quality
buccal mucosa cellCL:000233678.71silver quality
skeletal muscle tissue of rectus abdominisUBERON:000451178.02gold quality
endometrium epitheliumUBERON:000481174.71gold quality
superficial temporal arteryUBERON:000161474.03gold quality
dorsal motor nucleus of vagus nerveUBERON:000287073.67silver quality
gluteal muscleUBERON:000200073.08gold quality
inferior olivary complexUBERON:000212772.57gold quality
triceps brachiiUBERON:000150972.32gold quality
pigmented layer of retinaUBERON:000178271.14gold quality
diaphragmUBERON:000110371.05gold quality
type B pancreatic cellCL:000016970.51gold quality
skeletal muscle tissue of biceps brachiiUBERON:000450270.30gold quality
substantia nigraUBERON:000203870.22gold quality
midbrainUBERON:000189170.01gold quality
olfactory bulbUBERON:000226469.59gold quality
pharyngeal mucosaUBERON:000035569.38gold quality
hypothalamusUBERON:000189868.83gold quality
ponsUBERON:000098868.78gold quality
dorsal plus ventral thalamusUBERON:000189768.66gold quality
ventral tegmental areaUBERON:000269168.62gold quality

Single-cell (SCXA)

Detected in 4 experiment(s), a significant marker in 3.

ExperimentMarker?Max mean expression
E-GEOD-131882yes978.32
E-CURD-119yes69.20
E-CURD-135no1003.19
E-ANND-3no0.00

Regulation

Is transcription factor: no

Upstream regulators (CollecTRI, top): BCL6, FOXC1, HNF4A, IRF1

miRNA regulators (miRDB)

10 targeting SLC22A6, 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-5193100.0067.261744
HSA-MIR-340-5P100.0072.504437
HSA-MIR-92A-2-5P99.7567.012164
HSA-MIR-6715B-3P98.8068.071204
HSA-MIR-629-5P98.7868.721032
HSA-MIR-193B-5P97.9165.88837
HSA-MIR-445697.5064.881678
HSA-MIR-152-5P96.4266.59960
HSA-MIR-203A-5P96.3365.03714
HSA-MIR-6742-5P96.3264.01869

Literature-anchored findings (GeneRIF, showing 40)

  • elucidation of the molecular mechanism for renal tetracycline transport by human organic anion transporters (hOATs) using proximal tubular cells stably expressing hOATs (PMID:11855680)
  • cimetidine was found to be substrate for fROAT/hOAT1; organic anion transporters likely contribute to cimetidine excretion in proximal tubules (PMID:12429554)
  • hOAT1 transports urate,and is not responsible for familial juvenile gouty nephropathy in the two sisters examined in this study. (PMID:12472777)
  • PKC-induced hOAT1 downregulation is achieved through carrier retrieval from the cell membrane and does not involve phosphorylation of the predicted classic hOAT1 PKC consensus sites (PMID:12874449)
  • stimulation of basolateral organic anion uptake by EGF or PGE2 is a widespread (if not general) regulatory mechanism, and the signal transduction pathway involved seems to be general (PMID:14644751)
  • glycosylation has a role in the targeting of OAT1 onto the plasma membrane (PMID:14749323)
  • The level of human OAT1 mRNA is significantly lower in the kidney of patients with renal diseases than in the normal controls. (PMID:14984259)
  • “…provide evidence for a general expression of the recently identified splice-variants of hOTA1…Their expression is restricted to the kidney cortex.” p. 430 (PMID:15039295)
  • Leu-30 and Thr-36 in transmembrane domain 1 are critical determinants of hOAT1 function (PMID:15145940)
  • Organic anion transporter(s) likely play prominent role in basolateral transport of mercuric ions by proximal tubular cells and in nephropathy induced by Hg(2+). (PMID:15200431)
  • mercuric conjugates of Hcy are potential transportable substrates of OAT1. (PMID:15284288)
  • the coding region of OAT1 has low genetic and functional diversity and its variants may not contribute substantially to interindividual differences in renal elimination of xenobiotics (PMID:15864112)
  • hOAT1 has been suggested as the basis of nephrotoxicity induced by nucleoside phosphonate analogs (PMID:15914676)
  • hOAT1 exists in the plasma membrane as a homooligomer, possibly trimer, and higher order of oligomer (PMID:16046403)
  • CH(3)Hg-Cys is transported by hOAT1 (PMID:16164645)
  • The clustering of OAT genes in the genome raises the possibility that nucleotide polymorphisms in SLC22A6 could also effect SLC22A8 expression, and vice versa. (PMID:16648942)
  • the C terminus of hOAT1 has a central role in its function (PMID:16920720)
  • identified two new residues, Tyr(230) and Phe(438), which are important for substrate/protein interactions (PMID:17038320)
  • this paper reports the first characterization of the human OAT1 promoter and the first gene in the kidney whose promoter activity is regulated by HNF-4alpha (PMID:17344191)
  • it is concluded that Arg(466) influences the binding of glutarate, but not interaction with p-aminohippurate, and interacts with chloride, which is a major determinant in substrate translocation (PMID:17353191)
  • Both hOAT1 and hOAT3 are responsible for the basolateral uptake of edaravone sulfate in the kidney. (PMID:17502342)
  • hOAT1 did not mediate rosuvastatin uptake (PMID:17585018)
  • The data provide a model for the concerted action of OAT1 mediating basolateral secretion of glutarate derivatives from proximal tubule cells (PMID:18365245)
  • OAT1 undergoes constitutive and protein kinase C-regulated trafficking through a dynamin- and clathrin-dependent pathway (PMID:18818201)
  • The renal expression of OAT1 and OAT3 should be taken into account in order to improve pharmacotherapeutic efficacy and to prevent drug toxicity during the onset of this hepatic disease. (PMID:19034961)
  • Gaboxadol could be taken up into the kidney by hOAT1 followed by glucuronidation and efflux of the conjugate into urine via MRP4. (PMID:19082692)
  • ANG II inhibited hOAT1 activity through activation of PKCalpha, which led to the redistribution of the transporter from the cell surface to the intracellular compartments. (PMID:19088254)
  • OAT1 appears to be one of the major contributors to renal basolateral uptake of citrulline, and impaired activities of these transporters may contribute substantially to the increase in plasma citrulline in renal failure. (PMID:19403644)
  • results suggest that genetic polymorphisms may not be a significant contributing factor to variations in the hOAT2 expression or hOAT2 transport activity (PMID:19854166)
  • Our results are the first to highlight the central role of TM 12 in maintaining the stability and in promoting the maturation efficiency of hOAT1. (PMID:19892921)
  • Intergenic polymorphism rs10792367 between OAT1 and OAT3 is not associated with hypertension, but appears to be involved in between-individual variations in antihypertensive responses to hydrochlorothiazide. (PMID:21164499)
  • The data reveal alpha-ketoglutarate as a common high-affinity substrate of NaDC3, OAT1, and OAT3 (PMID:21865262)
  • High urine OAT1 and OAT3 and low OAT4 is associated with early reversible proximal tubular damage. (PMID:21945944)
  • Both hOAT1 and hOAT3 markedly stimulated the uptake of kynurenic acid into oocytes. (PMID:22108572)
  • It was shown that human OAT3 and OAT1 cannot be involved in the renal extraction of glutathione from blood, but OAT1 could support intracellular glutathione synthesis by taking up cysteinyl glycine. (PMID:23255614)
  • The results confirmed that OAT1, OAT3, OCT2, MATE1, and MATE2-K were coexpressed in tubular epithelial cells. (PMID:23630107)
  • PKC isoform PKCalpha was responsible for OAT1 ubiquitination. (PMID:23640180)
  • transport of xanthurenic acid by OAT1 and OAT3 (PMID:23832370)
  • high capacity p-cresyl sulfate trasnporter (PMID:24185403)
  • Clopidogrel/clopidogrel carboxylate are weak inhibitors of OAT1. (PMID:24530383)

Cross-species orthologs

51 orthologs

OrganismSymbolGene ID
danio_rerioslc22a4ENSDARG00000005335
danio_reriooatxENSDARG00000019713
danio_reriosi:dkey-166k12.1ENSDARG00000054690
danio_reriosi:dkey-119m7.4ENSDARG00000071049
danio_reriosi:dkey-119m7.8ENSDARG00000096654
mus_musculusSlc22a6ENSMUSG00000024650
rattus_norvegicusSlc22a6ENSRNOG00000018215
drosophila_melanogasterOrctFBGN0019952
drosophila_melanogasterCG15221FBGN0030331
drosophila_melanogasterBalatFBGN0033778
drosophila_melanogasterCG4630FBGN0033809
drosophila_melanogasterCG5592FBGN0035645
drosophila_melanogasterCG10486FBGN0035647
drosophila_melanogasterSLC22AFBGN0037140
drosophila_melanogasterCG7458FBGN0037144
drosophila_melanogasterCG14691FBGN0037829
drosophila_melanogasterCG14855FBGN0038260
drosophila_melanogasterCG14856FBGN0038261
drosophila_melanogasterCG14857FBGN0038262
drosophila_melanogasterCG12783FBGN0038448
drosophila_melanogasterCG7333FBGN0038715
drosophila_melanogasterCG7342FBGN0038716
drosophila_melanogasterCG17751FBGN0038717
drosophila_melanogasterCG17752FBGN0038718
drosophila_melanogasterCG16727FBGN0038719
drosophila_melanogasterCG6231FBGN0038720
drosophila_melanogasterCG4465FBGN0038750
drosophila_melanogasterCG4462FBGN0038752
drosophila_melanogasterCG4459FBGN0038753
drosophila_melanogasterCG6356FBGN0039178
drosophila_melanogasterCG3690FBGN0040350
drosophila_melanogasterCG31103FBGN0051103
drosophila_melanogasterCG31106FBGN0051106
drosophila_melanogasterCG31272FBGN0051272
drosophila_melanogasterCG33233FBGN0053233
drosophila_melanogasterCG33234FBGN0053234
drosophila_melanogasterOrct2FBGN0086365
drosophila_melanogasterCG42269FBGN0259164
drosophila_melanogasterCG44098FBGN0264907
caenorhabditis_elegansWBGENE00003837
caenorhabditis_elegansoct-1WBGENE00003842
caenorhabditis_elegansWBGENE00003843
caenorhabditis_elegansWBGENE00006220
caenorhabditis_elegansWBGENE00008110
caenorhabditis_elegansWBGENE00011456
caenorhabditis_elegansWBGENE00014127
caenorhabditis_elegansWBGENE00015088
caenorhabditis_elegansWBGENE00017751
caenorhabditis_elegansWBGENE00019408
caenorhabditis_elegansWBGENE00020701
caenorhabditis_elegansWBGENE00044455

Paralogs (22): SLC22A16 (ENSG00000004809), SLC22A17 (ENSG00000092096), SLC22A2 (ENSG00000112499), SLC22A7 (ENSG00000137204), SLC22A23 (ENSG00000137266), SLC22A14 (ENSG00000144671), SLC22A3 (ENSG00000146477), SLC22A8 (ENSG00000149452), SLC22A9 (ENSG00000149742), SVOPL (ENSG00000157703), SLC22A15 (ENSG00000163393), SVOP (ENSG00000166111), SLC22A11 (ENSG00000168065), SLC22A13 (ENSG00000172940), SLC22A1 (ENSG00000175003), SLC22A10 (ENSG00000184999), SLC22A25 (ENSG00000196600), SLC22A4 (ENSG00000197208), SLC22A5 (ENSG00000197375), SLC22A24 (ENSG00000197658), SLC22A12 (ENSG00000197891), SLC22A31 (ENSG00000259803)

Protein

Protein identifiers

Solute carrier family 22 member 6Q4U2R8 (reviewed: Q4U2R8)

Alternative names: Organic anion transporter 1, PAH transporter, Renal organic anion transporter 1

All UniProt accessions (2): F5H0T7, Q4U2R8

UniProt curated annotations — full annotation on UniProt →

Function. Secondary active transporter that functions as a Na(+)-independent organic anion (OA)/dicarboxylate antiporter where the uptake of one molecule of OA into the cell is coupled with an efflux of one molecule of intracellular dicarboxylate such as 2-oxoglutarate or glutarate. Mediates the uptake of OA across the basolateral side of proximal tubule epithelial cells, thereby contributing to the renal elimination of endogenous OA from the systemic circulation into the urine. Functions as a biopterin transporters involved in the uptake and the secretion of coenzymes tetrahydrobiopterin (BH4), dihydrobiopterin (BH2) and sepiapterin to urine, thereby determining baseline levels of blood biopterins. Transports prostaglandin E2 (PGE2) and prostaglandin F2-alpha (PGF2-alpha) and may contribute to their renal excretion. Also mediates the uptake of cyclic nucleotides such as cAMP and cGMP. Involved in the transport of neuroactive tryptophan metabolites kynurenate (KYNA) and xanthurenate (XA) and may contribute to their secretion from the brain. May transport glutamate. Also involved in the disposition of uremic toxins and potentially toxic xenobiotics by the renal organic anion secretory pathway, helping reduce their undesired toxicological effects on the body. Uremic toxins include the indoxyl sulfate (IS), hippurate/N-benzoylglycine (HA), indole acetate (IA), 3-carboxy-4- methyl-5-propyl-2-furanpropionate (CMPF) and urate. Xenobiotics include the mycotoxin ochratoxin (OTA). May also contribute to the transport of organic compounds in testes across the blood-testis-barrier.

Subcellular location. Basolateral cell membrane. Basal cell membrane.

Tissue specificity. Strongly expressed in kidney. Expressed at lower level in liver, skeletal muscle, brain and placenta. In kidney, found at the basolateral membrane of the proximal tubule. In testis, primarily localized to the basal membrane of Sertoli cells and weakly expressed in Leydig cells and vascular endothelial cells.

Post-translational modifications. Glycosylated. Glycosylation at Asn-113 may occur at a secondary level. Glycosylation is necessary for proper targeting of the transporter to the plasma membrane.

Domain organisation. Multiple cysteine residues are necessary for proper targeting to the plasma membrane.

Miscellaneous. Involved in the renal transport of a variety of drugs with well-known nephrotoxic potential, therefore may play a role in the etiology of the drug-associated nephrotoxicity. Uptakes the diagnostic agent PAH/para-aminohippurate and clinically used drugs. Mediates the pH- and chloride-dependent bidirectional transport of PAH/para-aminohippurate in exchange for 2-oxoglutarate or glutarate as counteranions. Can also mediate PAH/cGMP exchange.

Similarity. Belongs to the major facilitator (TC 2.A.1) superfamily. Organic cation transporter (TC 2.A.1.19) family.

Isoforms (4)

UniProt IDNamesCanonical?
Q4U2R8-11, OAT1-1yes
Q4U2R8-22, OAT1-2
Q4U2R8-33, OAT1-3
Q4U2R8-44, OAT1-4

RefSeq proteins (4): NP_004781, NP_695008, NP_695009, NP_695010 (=MANE)

Domains & families (InterPro)

IDNameType
IPR004749Orgcat_transp/SVOPFamily
IPR005828MFS_sugar_transport-likeFamily
IPR020846MFS_domDomain
IPR036259MFS_trans_sfHomologous_superfamily

Pfam: PF00083

Catalyzed reactions (Rhea), 12 shown:

  • (indol-3-yl)acetate(out) + a dicarboxylate(in) = (indol-3-yl)acetate(in) + a dicarboxylate(out) (RHEA:75983)
  • indoxyl sulfate(out) + a dicarboxylate(in) = indoxyl sulfate(in) + a dicarboxylate(out) (RHEA:75987)
  • N-benzoylglycine(out) + a dicarboxylate(in) = N-benzoylglycine(in) + a dicarboxylate(out) (RHEA:75991)
  • 3-carboxy-4-methyl-5-propyl-2-furanpropanoate(out) + a dicarboxylate(in) = 3-carboxy-4-methyl-5-propyl-2-furanpropanoate(in) + a dicarboxylate(out) (RHEA:75995)
  • kynurenate(out) + glutarate(in) = kynurenate(in) + glutarate(out) (RHEA:75999)
  • (6R)-L-erythro-5,6,7,8-tetrahydrobiopterin(out) + a dicarboxylate(in) = (6R)-L-erythro-5,6,7,8-tetrahydrobiopterin(in) + a dicarboxylate(out) (RHEA:76071)
  • L-erythro-7,8-dihydrobiopterin(out) + a dicarboxylate(in) = L-erythro-7,8-dihydrobiopterin(in) + a dicarboxylate(out) (RHEA:76075)
  • L-sepiapterin(out) + a dicarboxylate(in) = L-sepiapterin(in) + a dicarboxylate(out) (RHEA:76079)
  • prostaglandin F2alpha(out) + a dicarboxylate(in) = prostaglandin F2alpha(in) + a dicarboxylate(out) (RHEA:76119)
  • prostaglandin E2(out) + a dicarboxylate(in) = prostaglandin E2(in) + a dicarboxylate(out) (RHEA:76123)
  • 3’,5’-cyclic AMP(out) + a dicarboxylate(in) = 3’,5’-cyclic AMP(in) + a dicarboxylate(out) (RHEA:76127)
  • 3’,5’-cyclic GMP(out) + a dicarboxylate(in) = 3’,5’-cyclic GMP(in) + a dicarboxylate(out) (RHEA:76131)

UniProt features (48 total): topological domain 13, transmembrane region 12, mutagenesis site 6, glycosylation site 5, sequence variant 4, site 2, splice variant 2, sequence conflict 2, chain 1, region of interest 1

Structure

Experimental structures (PDB)

12 structures.

PDBMethodResolution (Å)
9MAUELECTRON MICROSCOPY2.87
9J04ELECTRON MICROSCOPY3.15
9U55ELECTRON MICROSCOPY3.17
9M8YELECTRON MICROSCOPY3.27
9M9VELECTRON MICROSCOPY3.31
9MC8ELECTRON MICROSCOPY3.31
9KL5ELECTRON MICROSCOPY3.33
9J02ELECTRON MICROSCOPY3.36
9UNXELECTRON MICROSCOPY3.45
9J06ELECTRON MICROSCOPY3.68
9KKKELECTRON MICROSCOPY3.85
9KLZELECTRON MICROSCOPY3.88

Predicted structure (AlphaFold)

ModelpLDDTFraction very-high
AF-Q4U2R8-F183.070.40

Functional residue map

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

Catalytic / active sites (2): 230 (important for interaction with cidofovir); 438 (important for interaction with cidofovir and pah)

Glycosylation sites (5): 39, 56, 92, 97, 113

Mutagenesis-validated functional residues (6):

PositionPhenotype
30complete loss of pah transport activity.
36complete loss of pah transport activity.
39complete loss of pah transport activity.
230loss of membrane protein expression and little uptake of cidofovir.
431decrease in the level of membrane protein expression and 70 % loss of pah uptake.
438decrease in the level of membrane protein expression, 70 % loss of pah uptake, increased affinity for cidofovir, lower v

Function

Pathways and Gene Ontology

Reactome pathways

5 pathways

IDPathway
R-HSA-561048Organic anion transport by SLC22 transporters
R-HSA-382551Transport of small molecules
R-HSA-425366
R-HSA-425407SLC-mediated transmembrane transport
R-HSA-549132

MSigDB gene sets: 144 (showing top): GOBP_EXCRETION, GOBP_SODIUM_INDEPENDENT_ORGANIC_ANION_TRANSPORT, GOBP_EPITHELIUM_DEVELOPMENT, MORF_FLT1, GOBP_METANEPHROS_DEVELOPMENT, MORF_MSH3, RORA1_01, GOBP_METANEPHRIC_EPITHELIUM_DEVELOPMENT, MODULE_64, MORF_BRCA1, MORF_ESR1, GOBP_KIDNEY_EPITHELIUM_DEVELOPMENT, MORF_RAD51L3, GOBP_ORGANIC_ACID_TRANSPORT, MODULE_379

GO Biological Process (10): monoatomic anion transport (GO:0006820), obsolete organic anion transport (GO:0015711), prostaglandin transport (GO:0015732), alpha-ketoglutarate transport (GO:0015742), sodium-independent organic anion transport (GO:0043252), metanephric proximal tubule development (GO:0072237), renal tubular secretion (GO:0097254), inorganic anion transport (GO:0015698), xenobiotic transport (GO:0042908), transmembrane transport (GO:0055085)

GO Molecular Function (11): solute:inorganic anion antiporter activity (GO:0005452), obsolete organic anion transmembrane transporter activity (GO:0008514), prostaglandin transmembrane transporter activity (GO:0015132), alpha-ketoglutarate transmembrane transporter activity (GO:0015139), antiporter activity (GO:0015297), obsolete sodium-independent organic anion transmembrane transporter activity (GO:0015347), transmembrane transporter activity (GO:0022857), chloride ion binding (GO:0031404), identical protein binding (GO:0042802), xenobiotic transmembrane transporter activity (GO:0042910), protein binding (GO:0005515)

GO Cellular Component (7): plasma membrane (GO:0005886), caveola (GO:0005901), basal plasma membrane (GO:0009925), basolateral plasma membrane (GO:0016323), protein-containing complex (GO:0032991), extracellular exosome (GO:0070062), membrane (GO:0016020)

Reactome top-level categories

Rollup of top-2 pathways:

CategoryPathways
SLC-mediated transport of organic anions1
Transport of small molecules1

GO top-level categories

Rollup of top GO terms by namespace:

CategoryTerms
transport3
transmembrane transport2
plasma membrane region2
monoatomic ion transport1
fatty acid transport1
icosanoid transport1
dicarboxylic acid transport1
proximal tubule development1
metanephric nephron tubule development1
renal system process1
excretion1
cellular process1
antiporter activity1
prostaglandin transport1
icosanoid transmembrane transporter activity1
dicarboxylic acid transmembrane transporter activity1
alpha-ketoglutarate transport1
secondary active transmembrane transporter activity1
transporter activity1
anion binding1
protein binding1
transmembrane transporter activity1
xenobiotic transport1
binding1
membrane1
cell periphery1
plasma membrane raft1
basal part of cell1
basal plasma membrane1
cellular_component1
extracellular vesicle1
cellular anatomical structure1

Protein interactions and networks

STRING

1300 interactions, top by confidence (×1000):

Protein AProtein BPartner UniProtScore
SLC22A6SLC2A9Q9NRM0780
SLC22A6YRDCQ86U90771
SLC22A6SLC47A1Q96FL8733
SLC22A6Q92681Q92681722
SLC22A6ABCC4O15439722
SLC22A6SLC6A2P23975714
SLC22A6SLC47A2Q86VL8712
SLC22A6SLCO1B3Q9NPD5706
SLC22A6SLC15A1P46059704
SLC22A6ABCC2Q92887704
SLC22A6SLCO1B1Q9Y6L6685
SLC22A6ABCG2Q9UNQ0677
SLC22A6SLC17A3O00476657
SLC22A6SLC15A2Q16348648
SLC22A6SLC17A1Q14916647

IntAct

7 interactions, top by confidence:

ABTypeScore
APPBP2SLC22A6psi-mi:“MI:0915”(physical association)0.620
SLC22A6APPBP2psi-mi:“MI:0915”(physical association)0.620
IL3RASTX7psi-mi:“MI:0914”(association)0.350
SLC22A6YIF1Apsi-mi:“MI:0914”(association)0.350
SLC22A6CLGNpsi-mi:“MI:0914”(association)0.350

BioGRID (76): APPBP2 (Two-hybrid), SLC25A23 (Affinity Capture-MS), SLC25A46 (Affinity Capture-MS), SLC20A2 (Affinity Capture-MS), SLC25A24 (Affinity Capture-MS), LPCAT3 (Affinity Capture-MS), GK (Affinity Capture-MS), RAB32 (Affinity Capture-MS), SLC38A7 (Affinity Capture-MS), ERGIC3 (Affinity Capture-MS), ERGIC2 (Affinity Capture-MS), MCU (Affinity Capture-MS), PDXDC1 (Affinity Capture-MS), CHPT1 (Affinity Capture-MS), SFXN5 (Affinity Capture-MS)

ESM2 similar proteins: A0A3Q2IDB4, A0A8B7HA97, A4ZYQ5, A6NK97, G1SZD9, O35956, O57379, O88909, P22732, P23945, P43427, Q0IHM1, Q2KIV1, Q3ZAV1, Q4U2R8, Q4W8A2, Q4W8A3, Q5R9C4, Q5RC45, Q5RCH6, Q5RET7, Q63ZE4, Q66J52, Q6DFR1, Q6NUB3, Q6NYN7, Q6PXP3, Q6T423, Q70BM6, Q76M72, Q76M99, Q80UJ1, Q863Y9, Q864Z3, Q8CFZ5, Q8HY24, Q8IVM8, Q8MK48, Q8N4F4, Q8R0S9

Diamond homologs: A0A3Q2IDB4, A0A8B7HA97, A6NK97, A6QLW8, B2GV36, G1SZD9, O34691, O35956, O57379, O75751, O88446, O88909, Q1RPP5, Q28ES4, Q2KIV1, Q3YAW7, Q3ZAV1, Q4U2R8, Q4W8A2, Q4W8A3, Q5R540, Q5R9C4, Q5RC45, Q5RCH6, Q5RLM2, Q63ZE4, Q66J52, Q66J54, Q6A4L0, Q6NYN7, Q6T423, Q70BM6, Q76M72, Q76M99, Q80UJ1, Q864Z3, Q8CFZ5, Q8HY24, Q8IVM8, Q8MK48

SIGNOR signaling

0 interactions.

Disease & clinical

Clinical variants and AI predictions

ClinVar

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

ClassificationCount (floor)
Pathogenic0
Likely pathogenic0
Uncertain significance78
Likely benign7
Benign1

Top pathogenic / likely-pathogenic (0)

SpliceAI

1529 predictions. Top by Δscore:

VariantEffectΔscore
11:62979597:C:CCacceptor_gain1.0000
11:62979728:GCTCA:Gdonor_loss1.0000
11:62979730:TCA:Tdonor_loss1.0000
11:62979731:CA:Cdonor_loss1.0000
11:62979732:A:ACdonor_gain1.0000
11:62979732:AC:Adonor_gain1.0000
11:62979733:C:CCdonor_gain1.0000
11:62979733:C:CTdonor_loss1.0000
11:62979733:CC:Cdonor_gain1.0000
11:62979944:CAAAC:Cacceptor_gain1.0000
11:62979946:AAC:Aacceptor_gain1.0000
11:62979946:AACC:Aacceptor_loss1.0000
11:62979947:AC:Aacceptor_gain1.0000
11:62979948:CC:Cacceptor_gain1.0000
11:62979948:CCT:Cacceptor_loss1.0000
11:62979949:C:CCacceptor_gain1.0000
11:62979949:CTA:Cacceptor_loss1.0000
11:62979950:T:Cacceptor_loss1.0000
11:62979953:C:CTacceptor_gain1.0000
11:62981256:TCA:Tdonor_loss1.0000
11:62981257:CACCT:Cdonor_loss1.0000
11:62981258:A:AGdonor_loss1.0000
11:62981259:C:Adonor_loss1.0000
11:62981261:T:TAdonor_gain1.0000
11:62981270:A:ACdonor_gain1.0000
11:62981271:A:Cdonor_gain1.0000
11:62981379:AGAAC:Aacceptor_gain1.0000
11:62981380:GAAC:Gacceptor_gain1.0000
11:62981381:AAC:Aacceptor_gain1.0000
11:62981381:AACC:Aacceptor_loss1.0000

AlphaMissense

3548 scored. Top likely-pathogenic:

VariantProtein changeam_pathogenicity
11:62979936:G:CS350R0.997
11:62979936:G:TS350R0.997
11:62979938:T:GS350R0.997
11:62977277:C:TG491D0.996
11:62977342:G:CS469R0.996
11:62977342:G:TS469R0.996
11:62977344:T:GS469R0.996
11:62977333:G:CS472R0.995
11:62977333:G:TS472R0.995
11:62977335:T:GS472R0.995
11:62977346:C:TG468D0.995
11:62981946:G:CS231R0.995
11:62981946:G:TS231R0.995
11:62981948:T:GS231R0.995
11:62977347:C:GG468R0.994
11:62979555:C:GG432R0.994
11:62979556:C:AK431N0.994
11:62979556:C:GK431N0.994
11:62979769:C:TG406D0.994
11:62979770:C:GG406R0.994
11:62977255:G:CS498R0.993
11:62977255:G:TS498R0.993
11:62977257:T:GS498R0.993
11:62979506:A:GL448P0.993
11:62979561:C:GG430R0.993
11:62979561:C:TG430R0.993
11:62979806:G:TR394S0.993
11:62979864:A:CF374L0.993
11:62979864:A:TF374L0.993
11:62979866:A:GF374L0.993

dbSNP variants (sampled 300 via entrez): RS1000108104 (11:62984914 T>C), RS1000387451 (11:62978773 G>A,C), RS1000989446 (11:62976974 G>A), RS1000998373 (11:62983798 T>C), RS1001114593 (11:62983421 C>G), RS1001289761 (11:62986487 C>A), RS1001306753 (11:62984585 T>C,G), RS1001771656 (11:62977928 A>G), RS1002316364 (11:62982872 G>A), RS1002952689 (11:62983246 A>G), RS1003012861 (11:62976368 A>G), RS1003538281 (11:62976738 G>A), RS1004597530 (11:62980866 T>C), RS1005168971 (11:62977438 C>T), RS1005196698 (11:62982308 G>A,T)

Disease associations

OMIM: gene MIM:607582 | disease phenotypes:

GenCC curated gene-disease

Mondo (0):

Orphanet (0):

HPO phenotypes

0 total (0 of 0 shown, HPO-id order):

GWAS associations

2 associations (top):

StudyTraitp-value
GCST008963_3Glucose homeostasis traits4.000000e-07
GCST008972_29Urate levels2.000000e-16

EFO canonical traits (2, from GWAS)

EFO IDTrait name
EFO:0004468glucose measurement
EFO:0004531urate measurement

Drugs & pharmacology

Drug and pharmacology data

Is drug target: yes

ChEMBL targets (1): CHEMBL1641347 (SINGLE PROTEIN)

Molecules with ChEMBL bioactivity

32 molecules (phase ≥1), by development phase (incl. off-target/promiscuous compounds). Patent mentions across the top 20 by phase: 1,334,765 (via chembl_molecule»patent_compound — counts attach to the compound, not the gene–compound relationship, so off-target/promiscuous molecules can dominate).

MoleculeNamePhasePatents
CHEMBL1146CEFAMANDOLE421,886
CHEMBL139DICLOFENAC4125,009
CHEMBL1435CEFAZOLIN437,670
CHEMBL154NAPROXEN4136,434
CHEMBL161CEFTRIAXONE471,135
CHEMBL1644CEFADROXIL46,102
CHEMBL1730CEFOTAXIME4480
CHEMBL316157CEPHALORIDINE445,474
CHEMBL388590BENZBROMARONE48,245
CHEMBL463AMINOHIPPURIC ACID42,260
CHEMBL507674CEFOPERAZONE423,712
CHEMBL521IBUPROFEN4228,490
CHEMBL527PIROXICAM4107,554
CHEMBL5314375CIDOFOVIR4120
CHEMBL563FLURBIPROFEN471,809
CHEMBL571KETOPROFEN4103,580
CHEMBL6INDOMETHACIN4156,366
CHEMBL617CEPHALOTHIN424,927
CHEMBL622ETODOLAC457,872
CHEMBL897PROBENECID4105,640
CHEMBL898DIFLUNISAL4
CHEMBL922ADEFOVIR DIPIVOXIL4
CHEMBL4112930PAMIPARIB3
CHEMBL484ADEFOVIR3
CHEMBL52333ROLOFYLLINE3
CHEMBL119625ZONAMPANEL2
CHEMBL1231530BETAMIPRON2
CHEMBL324846OCTANOIC ACID2
CHEMBL3707347VERINURAD2
CHEMBL6246ELLAGIC ACID2

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

PharmGKB clinical annotations

2 annotations.

VariantTypeLevelDrugsPhenotypes
rs11568626Other4adefovir dipivoxil;cidofovir;tenofovir
rs11568634Other4adefovir dipivoxil

PharmGKB variants

4 variants.

VariantGenesLevelScore#Clin annotsDrugs
rs4149170SLC22A60.000
rs11568626SLC22A64-1.751adefovir dipivoxil;cidofovir;tenofovir
rs11568634SLC22A64-1.251adefovir dipivoxil
rs4149171SLC22A60.000

GtoPdb / IUPHAR curated pharmacology

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

Target class: transporter — Organic anion transporters (OATs)

Most potent curated ligand interactions (1 total), top 1:

LigandActionAffinityParameter
probenecidInhibition4.9pIC50

ChEMBL bioactivities

42 potent at pChembl≥5 of 81 total, top 41 by pChembl (potency: 10 = 0.1 nM, 6 = 1 µM).

pChemblTypeValueUnitMolecule
7.52Ki30nMCEFAMANDOLE
6.75Ki180nMCEFAZOLIN
6.68Ki210nMCEFOPERAZONE
6.66Ki220nMCEPHALOTHIN
6.64Ki230nMCEFTRIAXONE
6.57IC50270nMELLAGIC ACID
6.13Ki740nMCEPHALORIDINE
6.07IC50850nMDIFLUNISAL
5.89IC501300nMKETOPROFEN
5.85IC501400nMKETOPROFEN
5.82IC501500nMFLURBIPROFEN
5.67IC502120nMBENZBROMARONE
5.52IC503000nMINDOMETHACIN
5.52IC503000nMZONAMPANEL
5.50Ki3130nMCEFOTAXIME
5.48IC503300nMCHEMBL6143249
5.46IC503500nMCHEMBL4527448
5.40IC504000nMDICLOFENAC
5.37Ki4300nMPROBENECID
5.36Ki4410nMPROBENECID
5.36IC504400nMCHEMBL4562825
5.34IC504600nMBENZBROMARONE
5.34IC504600nMVERINURAD
5.31IC504900nMGLUTARATE
5.27Ki5410nMOCTANOIC ACID
5.24IC505800nMNAPROXEN
5.22IC506000nMBETAMIPRON
5.22Ki6020nMAMINOHIPPURIC ACID
5.21Ki6140nMCEFADROXIL
5.21IC506190nMCHEMBL5542977
5.20IC506300nMPROBENECID
5.14Ki7200nMEPAMINURAD
5.13IC507400nMPROBENECID
5.11Ki7820nMROLOFYLLINE
5.10IC508000nMIBUPROFEN
5.08IC508400nMCHEMBL4584575
5.06IC508800nMAMINOHIPPURIC ACID
5.04IC509170nMCHEMBL5568246
5.03IC509300nMCHEMBL3929544
5.00IC509900nMCHEMBL2074983
5.00IC509900nMBENZOTHIAZOLYLCYSTEINE

PubChem BioAssay actives

39 with measured affinity, of 270 total; 32 most potent distinct compounds. Largely complementary to BindingDB; screening values are coarse (µM, 4 dp), so sub-nM hits tie at the floor.

CompoundAssayTypeValueUnit
(6R,7R)-7-[[(2R)-2-hydroxy-2-phenylacetyl]amino]-3-[(1-methyltetrazol-5-yl)sulfanylmethyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid681377: TP_TRANSPORTER: inhibition of PAH uptake in OAT1-expressing S2 cellski0.0300uM
Cefazolin681377: TP_TRANSPORTER: inhibition of PAH uptake in OAT1-expressing S2 cellski0.1800uM
(6R,7R)-7-[[(2R)-2-[(4-ethyl-2,3-dioxopiperazine-1-carbonyl)amino]-2-(4-hydroxyphenyl)acetyl]amino]-3-[(1-methyltetrazol-5-yl)sulfanylmethyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid681377: TP_TRANSPORTER: inhibition of PAH uptake in OAT1-expressing S2 cellski0.2100uM
(6R,7R)-3-(acetyloxymethyl)-8-oxo-7-[(2-thiophen-2-ylacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid681377: TP_TRANSPORTER: inhibition of PAH uptake in OAT1-expressing S2 cellski0.2200uM
Ceftriaxone681377: TP_TRANSPORTER: inhibition of PAH uptake in OAT1-expressing S2 cellski0.2300uM
6,7,13,14-tetrahydroxy-2,9-dioxatetracyclo[6.6.2.04,16.011,15]hexadeca-1(15),4,6,8(16),11,13-hexaene-3,10-dione679387: TP_TRANSPORTER: inhibition of ochratoxin A uptake (ochratoxin A / 1uM) in Xenopus laevis oocytesic500.2700uM
(6R,7R)-8-oxo-3-(pyridin-1-ium-1-ylmethyl)-7-[(2-thiophen-2-ylacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate681377: TP_TRANSPORTER: inhibition of PAH uptake in OAT1-expressing S2 cellski0.7400uM
Diflunisal681160: TP_TRANSPORTER: inhibition of Adefovir uptake in OAT1-expressing CHO cellsic500.8500uM
Ketoprofen681160: TP_TRANSPORTER: inhibition of Adefovir uptake in OAT1-expressing CHO cellsic501.3000uM
Flurbiprofen681160: TP_TRANSPORTER: inhibition of Adefovir uptake in OAT1-expressing CHO cellsic501.5000uM
(3,5-dibromo-4-hydroxyphenyl)-(2-ethyl-1-benzofuran-3-yl)methanone1999811: Inhibition of OAT1 (unknown origin) transfected in HEK293 cells assessed as inhibition of 6-CFL uptake preincubated for 30 mins followed by 6-CFL addition and measured for 15 mins by fluorescence based microplate reader analysisic502.1200uM
2-(7-imidazol-1-yl-6-nitro-2,3-dioxo-4H-quinoxalin-1-yl)acetic acid496844: Inhibition of human OAT1ic503.0000uM
Indomethacin681160: TP_TRANSPORTER: inhibition of Adefovir uptake in OAT1-expressing CHO cellsic503.0000uM
Cefotaxime681377: TP_TRANSPORTER: inhibition of PAH uptake in OAT1-expressing S2 cellski3.1300uM
bis(4-hydroxy-3-methoxyphenyl)methanone1639437: Inhibition of OAT1 (unknown origin) expressed in HEK293 cells assessed as reduction in 6-CF uptake measured after 5 mins by fluorescence assayic503.5000uM
Diclofenac681160: TP_TRANSPORTER: inhibition of Adefovir uptake in OAT1-expressing CHO cellsic504.0000uM
Probenecid679393: TP_TRANSPORTER: inhibition of PAH uptake in OAT1-expressing CHO cellski4.3000uM
4-ethenyl-7-hydroxy-8-methyl-9,10-dihydrophenanthrene-2-carboxylic acid1639437: Inhibition of OAT1 (unknown origin) expressed in HEK293 cells assessed as reduction in 6-CF uptake measured after 5 mins by fluorescence assayic504.4000uM
pentanedioic acid681331: TP_TRANSPORTER: inhibition of 6-Carboxyfluorescein uptake in OAT1-expressing CHO cellsic504.9000uM
caprylic acid678821: TP_TRANSPORTER: inhibition of Ochratoxin A uptake in OAT1-expressing S2 cellski5.4100uM
Naproxen681160: TP_TRANSPORTER: inhibition of Adefovir uptake in OAT1-expressing CHO cellsic505.8000uM
3-benzamidopropanoic acid681160: TP_TRANSPORTER: inhibition of Adefovir uptake in OAT1-expressing CHO cellsic506.0000uM
aminohippuric acid598877: Inhibition of human Oat1 expressed in Drosophila S2 cellski6.0200uM
Cefadroxil681377: TP_TRANSPORTER: inhibition of PAH uptake in OAT1-expressing S2 cellski6.1400uM
N-[[(2S)-1-(6-bromoquinoline-4-carbonyl)pyrrolidin-2-yl]methyl]-1,1,1-trifluoromethanesulfonamide2075651: Inhibition of human OAT1 expressed in MDCK-II cells using 6-carboxyfluorescein as substrateic506.1900uM
(3,5-dibromo-4-hydroxyphenyl)-(2,3-dihydropyrido[4,3-b][1,4]oxazin-4-yl)methanone1649929: Inhibition of human OAT1ki7.2000uM
1,3-dipropyl-8-(3-tricyclo[3.3.1.03,7]nonanyl)-7H-purine-2,6-dione678999: TP_TRANSPORTER: inhibition of PAH uptake in OAT1-expressing S2 cellski7.8200uM
2-[4-(2-methylpropyl)phenyl]propanoic acid681160: TP_TRANSPORTER: inhibition of Adefovir uptake in OAT1-expressing CHO cellsic508.0000uM
3-ethenyl-7-hydroxy-8-methyl-9,10-dihydrophenanthrene-2-carboxylic acid1639437: Inhibition of OAT1 (unknown origin) expressed in HEK293 cells assessed as reduction in 6-CF uptake measured after 5 mins by fluorescence assayic508.4000uM
N-[[(2S)-1-(6-cyclopropylquinoline-4-carbonyl)pyrrolidin-2-yl]methyl]-1,1,1-trifluoromethanesulfonamide2075651: Inhibition of human OAT1 expressed in MDCK-II cells using 6-carboxyfluorescein as substrateic509.1700uM
(2R)-2-amino-3-(1,3-benzothiazol-2-ylsulfanyl)propanoic acid679392: TP_TRANSPORTER: inhibition of PAH uptake in OAT1-expressing CHO cellsic509.9000uM
(2S)-2-amino-3-(1,3-benzothiazol-2-ylsulfanyl)propanoic acid679384: TP_TRANSPORTER: trans-stimulation in OAT1-COS7 cellsic509.9000uM

CTD chemical–gene interactions

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

ChemicalActions (top 5)PubMed papers
p-Aminohippuric Acidincreases import, increases uptake, increases reaction, affects transport, increases transport (+6 more)22
Probenecidincreases import, increases response to substance, affects cotreatment, increases uptake, increases chemical synthesis (+3 more)16
adefovirdecreases reaction, increases uptake, increases response to substance, affects response to substance5
Glutaratesincreases uptake, affects activity, affects binding, decreases reaction, increases transport (+2 more)4
6-carboxyfluoresceinincreases uptake, increases reaction, decreases reaction, increases import3
glutaric acidincreases reaction, increases export, increases activity, decreases reaction, increases transport (+1 more)3
Tenofovirincreases import, increases uptake, decreases reaction, increases response to substance3
Cidofovirincreases import, increases response to substance, increases uptake3
Cimetidinedecreases reaction, increases uptake, affects transport3
Mercuryaffects abundance, affects response to substance, affects cotreatment, increases transport3
Methotrexatedecreases reaction, increases uptake, increases response to substance3
Quercetindecreases reaction, increases response to substance, increases uptake, decreases activity3
aristolochic acid Idecreases activity, increases activity, increases response to substance, decreases reaction, increases uptake (+2 more)2
ochratoxin Aincreases uptake, increases reaction2
adipic aciddecreases reaction, increases response to substance, increases transport, affects cotreatment2
methylmercury cysteineincreases transport2
2-amino-3-(2-amino-2-carboxyethylsulfanyl-mercuricsulfanyl)-propionic aciddecreases reaction, increases transport2
Resveratrolaffects cotreatment, decreases expression, decreases reaction, increases uptake2
Acetaminophendecreases activity, decreases expression2
Acetylcysteineaffects cotreatment, decreases reaction, increases response to substance, increases uptake, increases transport2
Benzo(a)pyreneaffects methylation, decreases activity, increases methylation2
Cisplatindecreases expression2
Ketoglutaric Acidsaffects transport, decreases reaction, affects cotreatment, increases response to substance2
Unithiolincreases uptake, increases reaction, increases secretion, decreases reaction2
2,4-Dichlorophenoxyacetic Aciddecreases reaction, increases uptake2
aurantio-obtusindecreases activity1
bisphenol Fincreases reaction, increases uptake1
pyrazinoic acidaffects transport, decreases reaction1
baicaleindecreases activity1
bisphenol Aincreases reaction, increases uptake1

ChEMBL screening assays

157 unique, capped per target: 94 functional, 39 binding, 22 admet, 2 toxicity

Representative assays (with source publication via chembl_document):

Assay IDTypeDescriptionSource paper
CHEMBL1217025BindingInhibition of human OAT1alpha-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) antagonists: from bench to bedside. — J Med Chem
CHEMBL1743147ADMETSubstrates of transporters of clinical importance in the absorption and disposition of drugs, OAT1Membrane transporters in drug development. — Nat Rev Drug Discov
CHEMBL2075808FunctionalTP_TRANSPORTER: uptake in OAT1-expressing S2 cellsHuman organic anion transporters and human organic cation transporters mediate renal transport of prostaglandins. — J Pharmacol Exp Ther

Cellosaurus cell lines

3 cell lines: 1 conditionally immortalized cell line, 1 telomerase immortalized cell line, 1 transformed cell line

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

CellosaurusNameCategorySex
CVCL_LI01ciPTEC-OAT1Conditionally immortalized cell lineFemale
CVCL_RM67RPTEC/TERT1 OAT1Telomerase immortalized cell lineMale
CVCL_UE07OAT1 HEK 293T/17Transformed cell lineFemale

Clinical trials (associated diseases)

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