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Identification
HMDB Protein ID HMDBP01612
Secondary Accession Numbers
  • 6935
  • HMDBP06222
Name Solute carrier family 22 member 5
Synonyms
  1. High-affinity sodium-dependent carnitine cotransporter
  2. Organic cation/carnitine transporter 2
Gene Name SLC22A5
Protein Type Transporter
Biological Properties
General Function Involved in ion transmembrane transporter activity
Specific Function Sodium-ion dependent, high affinity carnitine transporter. Involved in the active cellular uptake of carnitine. Transports one sodium ion with one molecule of carnitine. Also transports organic cations such as tetraethylammonium (TEA) without the involvement of sodium. Also relative uptake activity ratio of carnitine to TEA is 11.3
Pathways
  • Acylcarnitine (13Z,16Z)-Hexacosa-13,16-dienoylcarnitine
  • Acylcarnitine (17Z)-Hexacos-17-enoylcarnitine
  • Acylcarnitine (2S,3R)-3-Hydroxy-2-methylbutanoylcarnitine
  • Acylcarnitine (7Z,9Z,12Z,15Z,18Z,21Z)-tetracosa-7,9,12,15,18,21-hexaenoylcarnitine
  • Acylcarnitine 3-Hydroxydecanoylcarnitine
  • Acylcarnitine Heptacosanoylcarnitine
  • Acylcarnitine Hexacosanoylcarnitine
  • Acylcarnitine Nonacosanoylcarnitine
  • Acylcarnitine Octacosanoylcarnitine
  • Acylcarnitine Pentacosanoylcarnitine
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. Membrane
  2. Multi-pass membrane protein
Gene Properties
Chromosome Location Chromosome:5
Locus 5q31
SNPs SLC22A5
Gene Sequence
>1674 bp
ATGCGGGACTACGACGAGGTGACCGCCTTCCTGGGCGAGTGGGGGCCCTTCCAGCGCCTC
ATCTTCTTCCTGCTCAGCGCCAGCATCATCCCCAATGGCTTCACCGGCCTGTCCTCCGTG
TTCCTGATAGCGACCCCGGAGCACCGCTGCCGGGTGCCGGACGCCGCGAACCTGAGCAGC
GCCTGGCGCAACCACACTGTCCCACTGCGGCTGCGGGACGGCCGCGAGGTGCCCCACAGC
TGCCGCCGCTACCGGCTCGCCACCATCGCCAACTTCTCGGCGCTCGGGCTGGAGCCGGGG
CGCGACGTGGACCTGGGGCAGCTGGAGCAGGAGAGCTGTCTGGATGGCTGGGAGTTCAGT
CAGGACGTCTACCTGTCCACCATTGTGACCGAGTGGAACCTGGTGTGTGAGGACGACTGG
AAGGCCCCACTCACAATCTCCTTGTTCTTCGTGGGTGTGCTGTTGGGCTCCTTCATTTCA
GGGCAGCTGTCAGACAGGTTTGGCCGGAAGAATGTGCTGTTCGTGACCATGGGCATGCAG
ACAGGCTTCAGCTTCCTGCAGATCTTCTCGAAGAATTTTGAGATGTTTGTCGTGCTGTTT
GTCCTTGTAGGCATGGGCCAGATCTCCAACTATGTGGCAGCATTTGTCCTGGGGACAGAA
ATTCTTGGCAAGTCAGTTCGTATAATATTCTCTACGTTAGGAGTGTGCATATTTTATGCA
TTTGGCTACATGGTGCTGCCACTGTTTGCTTACTTCATCCGAGACTGGCGGATGCTGCTG
GTGGCGCTGACGATGCCGGGGGTGCTGTGCGTGGCACTCTGGTGGTTCATCCCTGAGTCC
CCCCGATGGCTCATCTCTCAGGGACGATTTGAAGAGGCAGAGGTGATCATCCGCAAGGCT
GCCAAAGCCAATGGGATTGTTGTGCCTTCCACTATCTTTGACCCGAGTGAGTTACAAGAC
CTAAGTTCCAAGAAGCAACAGTCCCACAACATTCTGGATCTGCTTCGAACCTGGAATATC
CGGATGGTCACCATCATGTCCATAATGCTGTGGATGACCATATCAGTGGGCTATTTTGGG
CTTTCGCTTGATACTCCTAACTTGCATGGGGACATCTTTGTGAACTGCTTCCTTTCAGCG
ATGGTTGAAGTCCCAGCATATGTGTTGGCCTGGCTGCTGCTGCAATATTTGCCCCGGCGC
TATTCCATGGCCACTGCCCTCTTCCTGGGTGGCAGTGTCCTTCTCTTCATGCAGCTGGTA
CCCCCAGACTTGTATTATTTGGCTACAGTCCTGGTGATGGTGGGCAAGTTTGGAGTCACG
GCTGCCTTTTCCATGGTCTACGTGTACACAGCCGAGCTGTATCCCACAGTGGTGAGAAAC
ATGGGTGTGGGAGTCAGCTCCACAGCATCCCGCCTGGGCAGCATCCTGTCTCCCTACTTC
GTTTACCTTGGTGCCTACGACCGCTTCCTGCCCTACATTCTCATGGGAAGTCTGACCATC
CTGACAGCCATCCTCACCTTGTTTCTCCCAGAGAGCTTCGGTACCCCACTCCCAGACACC
ATTGACCAGATGCTAAGAGTCAAAGGAATGAAACACAGAAAAACTCCAAGTCACACAAGG
ATGTTAAAAGATGGTCAAGAAAGGCCCACAATCCTTAAAAGCACAGCCTTCTAA
Protein Properties
Number of Residues 557
Molecular Weight 62751.1
Theoretical pI 8.04
Pfam Domain Function
Signals
  • None
Transmembrane Regions
  • 21-41
  • 143-163
  • 173-193
  • 198-218
  • 233-253
  • 258-278
  • 342-362
  • 374-394
  • 407-427
  • 431-451
  • 463-483
  • 489-509
Protein Sequence
>Solute carrier family 22 member 5
MRDYDEVTAFLGEWGPFQRLIFFLLSASIIPNGFTGLSSVFLIATPEHRCRVPDAANLSS
AWRNHTVPLRLRDGREVPHSCRRYRLATIANFSALGLEPGRDVDLGQLEQESCLDGWEFS
QDVYLSTIVTEWNLVCEDDWKAPLTISLFFVGVLLGSFISGQLSDRFGRKNVLFVTMGMQ
TGFSFLQIFSKNFEMFVVLFVLVGMGQISNYVAAFVLGTEILGKSVRIIFSTLGVCIFYA
FGYMVLPLFAYFIRDWRMLLVALTMPGVLCVALWWFIPESPRWLISQGRFEEAEVIIRKA
AKANGIVVPSTIFDPSELQDLSSKKQQSHNILDLLRTWNIRMVTIMSIMLWMTISVGYFG
LSLDTPNLHGDIFVNCFLSAMVEVPAYVLAWLLLQYLPRRYSMATALFLGGSVLLFMQLV
PPDLYYLATVLVMVGKFGVTAAFSMVYVYTAELYPTVVRNMGVGVSSTASRLGSILSPYF
VYLGAYDRFLPYILMGSLTILTAILTLFLPESFGTPLPDTIDQMLRVKGMKHRKTPSHTR
MLKDGQERPTILKSTAF
GenBank ID Protein Not Available
UniProtKB/Swiss-Prot ID O76082
UniProtKB/Swiss-Prot Entry Name S22A5_HUMAN
PDB IDs Not Available
GenBank Gene ID AF057164
GeneCard ID SLC22A5
GenAtlas ID SLC22A5
HGNC ID HGNC:10969
References
General References
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  4. Mayya V, Lundgren DH, Hwang SI, Rezaul K, Wu L, Eng JK, Rodionov V, Han DK: Quantitative phosphoproteomic analysis of T cell receptor signaling reveals system-wide modulation of protein-protein interactions. Sci Signal. 2009 Aug 18;2(84):ra46. doi: 10.1126/scisignal.2000007. [PubMed:19690332 ]
  5. Wu X, Prasad PD, Leibach FH, Ganapathy V: cDNA sequence, transport function, and genomic organization of human OCTN2, a new member of the organic cation transporter family. Biochem Biophys Res Commun. 1998 May 29;246(3):589-95. [PubMed:9618255 ]
  6. Tamai I, Ohashi R, Nezu J, Yabuuchi H, Oku A, Shimane M, Sai Y, Tsuji A: Molecular and functional identification of sodium ion-dependent, high affinity human carnitine transporter OCTN2. J Biol Chem. 1998 Aug 7;273(32):20378-82. [PubMed:9685390 ]
  7. Nezu J, Tamai I, Oku A, Ohashi R, Yabuuchi H, Hashimoto N, Nikaido H, Sai Y, Koizumi A, Shoji Y, Takada G, Matsuishi T, Yoshino M, Kato H, Ohura T, Tsujimoto G, Hayakawa J, Shimane M, Tsuji A: Primary systemic carnitine deficiency is caused by mutations in a gene encoding sodium ion-dependent carnitine transporter. Nat Genet. 1999 Jan;21(1):91-4. [PubMed:9916797 ]
  8. Wu X, Huang W, Prasad PD, Seth P, Rajan DP, Leibach FH, Chen J, Conway SJ, Ganapathy V: Functional characteristics and tissue distribution pattern of organic cation transporter 2 (OCTN2), an organic cation/carnitine transporter. J Pharmacol Exp Ther. 1999 Sep;290(3):1482-92. [PubMed:10454528 ]
  9. Burwinkel B, Kreuder J, Schweitzer S, Vorgerd M, Gempel K, Gerbitz KD, Kilimann MW: Carnitine transporter OCTN2 mutations in systemic primary carnitine deficiency: a novel Arg169Gln mutation and a recurrent Arg282ter mutation associated with an unconventional splicing abnormality. Biochem Biophys Res Commun. 1999 Aug 2;261(2):484-7. [PubMed:10425211 ]
  10. Vaz FM, Scholte HR, Ruiter J, Hussaarts-Odijk LM, Pereira RR, Schweitzer S, de Klerk JB, Waterham HR, Wanders RJ: Identification of two novel mutations in OCTN2 of three patients with systemic carnitine deficiency. Hum Genet. 1999 Jul-Aug;105(1-2):157-61. [PubMed:10480371 ]
  11. Tang NL, Ganapathy V, Wu X, Hui J, Seth P, Yuen PM, Wanders RJ, Fok TF, Hjelm NM: Mutations of OCTN2, an organic cation/carnitine transporter, lead to deficient cellular carnitine uptake in primary carnitine deficiency. Hum Mol Genet. 1999 Apr;8(4):655-60. [PubMed:10072434 ]
  12. Koizumi A, Nozaki J, Ohura T, Kayo T, Wada Y, Nezu J, Ohashi R, Tamai I, Shoji Y, Takada G, Kibira S, Matsuishi T, Tsuji A: Genetic epidemiology of the carnitine transporter OCTN2 gene in a Japanese population and phenotypic characterization in Japanese pedigrees with primary systemic carnitine deficiency. Hum Mol Genet. 1999 Nov;8(12):2247-54. [PubMed:10545605 ]
  13. Seth P, Wu X, Huang W, Leibach FH, Ganapathy V: Mutations in novel organic cation transporter (OCTN2), an organic cation/carnitine transporter, with differential effects on the organic cation transport function and the carnitine transport function. J Biol Chem. 1999 Nov 19;274(47):33388-92. [PubMed:10559218 ]
  14. Mayatepek E, Nezu J, Tamai I, Oku A, Katsura M, Shimane M, Tsuji A: Two novel missense mutations of the OCTN2 gene (W283R and V446F) in a patient with primary systemic carnitine deficiency. Hum Mutat. 2000 Jan;15(1):118. [PubMed:10612840 ]
  15. Wang Y, Kelly MA, Cowan TM, Longo N: A missense mutation in the OCTN2 gene associated with residual carnitine transport activity. Hum Mutat. 2000;15(3):238-45. [PubMed:10679939 ]
  16. Urban TJ, Gallagher RC, Brown C, Castro RA, Lagpacan LL, Brett CM, Taylor TR, Carlson EJ, Ferrin TE, Burchard EG, Packman S, Giacomini KM: Functional genetic diversity in the high-affinity carnitine transporter OCTN2 (SLC22A5). Mol Pharmacol. 2006 Nov;70(5):1602-11. Epub 2006 Aug 24. [PubMed:16931768 ]