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Identification
HMDB Protein ID HMDBP02574
Secondary Accession Numbers
  • 8073
  • HMDBP05564
Name Solute carrier family 22 member 1
Synonyms
  1. Organic cation transporter 1
  2. hOCT1
Gene Name SLC22A1
Protein Type Transporter
Biological Properties
General Function Involved in ion transmembrane transporter activity
Specific Function Translocates a broad array of organic cations with various structures and molecular weights including the model compounds 1-methyl-4-phenylpyridinium (MPP), tetraethylammonium (TEA), N-1-methylnicotinamide (NMN), 4-(4-(dimethylamino)styryl)- N-methylpyridinium (ASP), the endogenous compounds choline, guanidine, histamine, epinephrine, adrenaline, noradrenaline and dopamine, and the drugs quinine, and metformin. The transport of organic cations is inhibited by a broad array of compounds like tetramethylammonium (TMA), cocaine, lidocaine, NMDA receptor antagonists, atropine, prazosin, cimetidine, TEA and NMN, guanidine, cimetidine, choline, procainamide, quinine, tetrabutylammonium, and tetrapentylammonium. Translocates organic cations in an electrogenic and pH-independent manner. Translocates organic cations across the plasma membrane in both directions. Transports the polyamines spermine and spermidine. Transports pramipexole across the basolateral membrane of the proximal tubular epithelial cells. The choline transport is activated by MMTS. Regulated by various intracellular signaling pathways including inhibition by protein kinase A activation, and endogenously activation by the calmodulin complex, the calmodulin- dependent kinase II and LCK tyrosine kinase
Pathways
  • Lamivudine Metabolism Pathway
  • Tramadol Metabolism Pathway
Reactions Not Available
GO Classification
Component
membrane
cell part
membrane part
intrinsic to membrane
integral to membrane
Function
transmembrane transporter activity
substrate-specific transmembrane transporter activity
ion transmembrane transporter activity
transporter activity
Process
establishment of localization
transport
transmembrane transport
ion transport
Cellular Location
  1. Multi-pass membrane protein
  2. Basolateral cell membrane
Gene Properties
Chromosome Location Chromosome:6
Locus 6q26
SNPs SLC22A1
Gene Sequence
>1665 bp
ATGCCCACCGTGGATGACATTCTGGAGCAGGTTGGGGAGTCTGGCTGGTTCCAGAAGCAA
GCCTTCCTCATCTTATGCCTGCTGTCGGCTGCCTTTGCGCCCATCTGTGTGGGCATCGTC
TTCCTGGGTTTCACACCTGACCACCACTGCCAGAGCCCTGGGGTGGCTGAGCTGAGCCAG
CGCTGTGGCTGGAGCCCTGCGGAGGAGCTGAACTATACAGTGCCAGGCCTGGGGCCCGCG
GGCGAGGCCTTCCTTGGCCAGTGCAGGCGCTATGAAGTGGACTGGAACCAGAGCGCCCTC
AGCTGTGTAGACCCCCTGGCTAGCCTGGCCACCAACAGGAGCCACCTGCCGCTGGGTCCC
TGCCAGGATGGCTGGGTGTATGACACGCCCGGCTCTTCCATCGTCACTGAGTTCAACCTG
GTGTGTGCTGACTCCTGGAAGCTGGACCTCTTTCAGTCCTGTTTGAATGCGGGCTTCTTC
TTTGGCTCTCTCGGTGTTGGCTACTTTGCAGACAGGTTTGGCCGTAAGCTGTGTCTCCTG
GGAACTGTGCTGGTCAACGCGGTGTCGGGCGTGCTCATGGCCTTCTCGCCCAACTACATG
TCCATGCTGCTCTTCCGCCTGCTGCAGGGCCTGGTCAGCAAGGGCAACTGGATGGCTGGC
TACACCCTAATCACAGAATTTGTTGGCTCGGGCTCCAGAAGAACGGTGGCGATCATGTAC
CAGATGGCCTTCACGGTGGGGCTGGTGGCGCTTACCGGGCTGGCCTACGCCCTGCCTCAC
TGGCGCTGGCTGCAGCTGGCAGTCTCCCTGCCCACCTTCCTCTTCCTGCTCTACTACTGG
TGTGTGCCGGAGTCCCCTCGGTGGCTGTTATCACAAAAAAGAAACACTGAAGCAATAAAG
ATAATGGACCACATCGCTCAAAAGAATGGGAAGTTGCCTCCTGCTGATTTAAAGATGCTT
TCCCTCGAAGAGGATGTCACCGAAAAGCTGAGCCCTTCATTTGCAGACCTGTTCCGCACG
CCGCGCCTGAGGAAGCGCACCTTCATCCTGATGTACCTGTGGTTCACGGACTCTGTGCTC
TATCAGGGGCTCATCCTGCACATGGGCGCCACCAGCGGGAACCTCTACCTGGATTTCCTT
TACTCCGCTCTGGTCGAAATCCCGGGGGCCTTCATAGCCCTCATCACCATTGACCGCGTG
GGCCGCATCTACCCCATGGCCATGTCAAATTTGTTGGCGGGGGCAGCCTGCCTCGTCATG
ATTTTTATCTCACCTGACCTGCACTGGTTAAACATCATAATCATGTGTGTTGGCCGAATG
GGAATCACCATTGCAATACAAATGATCTGCCTGGTGAATGCTGAGCTGTACCCCACATTC
GTCAGGAACCTCGGAGTGATGGTGTGTTCCTCCCTGTGTGACATAGGTGGGATAATCACC
CCCTTCATAGTCTTCAGGCTGAGGGAGGTCTGGCAAGCCTTGCCCCTCATTTTGTTTGCG
GTGTTGGGCCTGCTTGCCGCGGGAGTGACGCTACTTCTTCCAGAGACCAAGGGGGTCGCT
TTGCCAGAGACCATGAAGGACGCCGAGAACCTTGGGAGAAAAGCAAAGCCCAAAGAAAAC
ACGATTTACCTTAAGGTCCAAACCTCAGAACCCTCGGGCACCTGA
Protein Properties
Number of Residues 554
Molecular Weight 61187.4
Theoretical pI 6.81
Pfam Domain Function
Signals
  • None
Transmembrane Regions
  • 22-42
  • 150-170
  • 177-197
  • 207-229
  • 236-256
  • 263-283
  • 348-368
  • 377-397
  • 403-423
  • 432-452
  • 465-485
  • 493-513
Protein Sequence
>Solute carrier family 22 member 1
MPTVDDILEQVGESGWFQKQAFLILCLLSAAFAPICVGIVFLGFTPDHHCQSPGVAELSQ
RCGWSPAEELNYTVPGLGPAGEAFLGQCRRYEVDWNQSALSCVDPLASLATNRSHLPLGP
CQDGWVYDTPGSSIVTEFNLVCADSWKLDLFQSCLNAGFFFGSLGVGYFADRFGRKLCLL
GTVLVNAVSGVLMAFSPNYMSMLLFRLLQGLVSKGNWMAGYTLITEFVGSGSRRTVAIMY
QMAFTVGLVALTGLAYALPHWRWLQLAVSLPTFLFLLYYWCVPESPRWLLSQKRNTEAIK
IMDHIAQKNGKLPPADLKMLSLEEDVTEKLSPSFADLFRTPRLRKRTFILMYLWFTDSVL
YQGLILHMGATSGNLYLDFLYSALVEIPGAFIALITIDRVGRIYPMAMSNLLAGAACLVM
IFISPDLHWLNIIIMCVGRMGITIAIQMICLVNAELYPTFVRNLGVMVCSSLCDIGGIIT
PFIVFRLREVWQALPLILFAVLGLLAAGVTLLLPETKGVALPETMKDAENLGRKAKPKEN
TIYLKVQTSEPSGT
GenBank ID Protein 2511670
UniProtKB/Swiss-Prot ID O15245
UniProtKB/Swiss-Prot Entry Name S22A1_HUMAN
PDB IDs Not Available
GenBank Gene ID X98332
GeneCard ID SLC22A1
GenAtlas ID SLC22A1
HGNC ID HGNC:10963
References
General References
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  3. Gerhard DS, Wagner L, Feingold EA, Shenmen CM, Grouse LH, Schuler G, Klein SL, Old S, Rasooly R, Good P, Guyer M, Peck AM, Derge JG, Lipman D, Collins FS, Jang W, Sherry S, Feolo M, Misquitta L, Lee E, Rotmistrovsky K, Greenhut SF, Schaefer CF, Buetow K, Bonner TI, Haussler D, Kent J, Kiekhaus M, Furey T, Brent M, Prange C, Schreiber K, Shapiro N, Bhat NK, Hopkins RF, Hsie F, Driscoll T, Soares MB, Casavant TL, Scheetz TE, Brown-stein MJ, Usdin TB, Toshiyuki S, Carninci P, Piao Y, Dudekula DB, Ko MS, Kawakami K, Suzuki Y, Sugano S, Gruber CE, Smith MR, Simmons B, Moore T, Waterman R, Johnson SL, Ruan Y, Wei CL, Mathavan S, Gunaratne PH, Wu J, Garcia AM, Hulyk SW, Fuh E, Yuan Y, Sneed A, Kowis C, Hodgson A, Muzny DM, McPherson J, Gibbs RA, Fahey J, Helton E, Ketteman M, Madan A, Rodrigues S, Sanchez A, Whiting M, Madari A, Young AC, Wetherby KD, Granite SJ, Kwong PN, Brinkley CP, Pearson RL, Bouffard GG, Blakesly RW, Green ED, Dickson MC, Rodriguez AC, Grimwood J, Schmutz J, Myers RM, Butterfield YS, Griffith M, Griffith OL, Krzywinski MI, Liao N, Morin R, Palmquist D, Petrescu AS, Skalska U, Smailus DE, Stott JM, Schnerch A, Schein JE, Jones SJ, Holt RA, Baross A, Marra MA, Clifton S, Makowski KA, Bosak S, Malek J: The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC). Genome Res. 2004 Oct;14(10B):2121-7. [PubMed:15489334 ]
  4. Gorboulev V, Ulzheimer JC, Akhoundova A, Ulzheimer-Teuber I, Karbach U, Quester S, Baumann C, Lang F, Busch AE, Koepsell H: Cloning and characterization of two human polyspecific organic cation transporters. DNA Cell Biol. 1997 Jul;16(7):871-81. [PubMed:9260930 ]
  5. Kimura N, Masuda S, Tanihara Y, Ueo H, Okuda M, Katsura T, Inui K: Metformin is a superior substrate for renal organic cation transporter OCT2 rather than hepatic OCT1. Drug Metab Pharmacokinet. 2005 Oct;20(5):379-86. [PubMed:16272756 ]
  6. Zhang L, Dresser MJ, Gray AT, Yost SC, Terashita S, Giacomini KM: Cloning and functional expression of a human liver organic cation transporter. Mol Pharmacol. 1997 Jun;51(6):913-21. [PubMed:9187257 ]
  7. Hayer M, Bonisch H, Bruss M: Molecular cloning, functional characterization and genomic organization of four alternatively spliced isoforms of the human organic cation transporter 1 (hOCT1/SLC22A1). Ann Hum Genet. 1999 Nov;63(Pt 6):473-82. [PubMed:11388889 ]
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  9. van Montfoort JE, Muller M, Groothuis GM, Meijer DK, Koepsell H, Meier PJ: Comparison of "type I" and "type II" organic cation transport by organic cation transporters and organic anion-transporting polypeptides. J Pharmacol Exp Ther. 2001 Jul;298(1):110-5. [PubMed:11408531 ]
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  12. Saborowski M, Kullak-Ublick GA, Eloranta JJ: The human organic cation transporter-1 gene is transactivated by hepatocyte nuclear factor-4alpha. J Pharmacol Exp Ther. 2006 May;317(2):778-85. Epub 2006 Jan 25. [PubMed:16436500 ]
  13. Amphoux A, Vialou V, Drescher E, Bruss M, Mannoury La Cour C, Rochat C, Millan MJ, Giros B, Bonisch H, Gautron S: Differential pharmacological in vitro properties of organic cation transporters and regional distribution in rat brain. Neuropharmacology. 2006 Jun;50(8):941-52. Epub 2006 Mar 31. [PubMed:16581093 ]
  14. Dias V, Ribeiro V: The expression of the solute carriers NTCP and OCT-1 is regulated by cholesterol in HepG2 cells. Fundam Clin Pharmacol. 2007 Aug;21(4):445-50. [PubMed:17635184 ]
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  16. Shu Y, Leabman MK, Feng B, Mangravite LM, Huang CC, Stryke D, Kawamoto M, Johns SJ, DeYoung J, Carlson E, Ferrin TE, Herskowitz I, Giacomini KM: Evolutionary conservation predicts function of variants of the human organic cation transporter, OCT1. Proc Natl Acad Sci U S A. 2003 May 13;100(10):5902-7. Epub 2003 Apr 28. [PubMed:12719534 ]
  17. Sakata T, Anzai N, Shin HJ, Noshiro R, Hirata T, Yokoyama H, Kanai Y, Endou H: Novel single nucleotide polymorphisms of organic cation transporter 1 (SLC22A1) affecting transport functions. Biochem Biophys Res Commun. 2004 Jan 16;313(3):789-93. [PubMed:14697261 ]
  18. Itoda M, Saito Y, Maekawa K, Hichiya H, Komamura K, Kamakura S, Kitakaze M, Tomoike H, Ueno K, Ozawa S, Sawada J: Seven novel single nucleotide polymorphisms in the human SLC22A1 gene encoding organic cation transporter 1 (OCT1). Drug Metab Pharmacokinet. 2004 Aug;19(4):308-12. [PubMed:15499200 ]