Large neutral amino acids transporter small subunit 2

Details

Name
Large neutral amino acids transporter small subunit 2
Synonyms
  • hLAT2
  • L-type amino acid transporter 2
  • LAT2
  • Solute carrier family 7 member 8
Gene Name
SLC7A8
Organism
Humans
Amino acid sequence
>lcl|BSEQ0001574|Large neutral amino acids transporter small subunit 2
MEEGARHRNNTEKKHPGGGESDASPEAGSGGGGVALKKEIGLVSACGIIVGNIIGSGIFV
SPKGVLENAGSVGLALIVWIVTGFITVVGALCYAELGVTIPKSGGDYSYVKDIFGGLAGF
LRLWIAVLVIYPTNQAVIALTFSNYVLQPLFPTCFPPESGLRLLAAICLLLLTWVNCSSV
RWATRVQDIFTAGKLLALALIIIMGIVQICKGEYFWLEPKNAFENFQEPDIGLVALAFLQ
GSFAYGGWNFLNYVTEELVDPYKNLPRAIFISIPLVTFVYVFANVAYVTAMSPQELLASN
AVAVTFGEKLLGVMAWIMPISVALSTFGGVNGSLFTSSRLFFAGAREGHLPSVLAMIHVK
RCTPIPALLFTCISTLLMLVTSDMYTLINYVGFINYLFYGVTVAGQIVLRWKKPDIPRPI
KINLLFPIIYLLFWAFLLVFSLWSEPVVCGIGLAIMLTGVPVYFLGVYWQHKPKCFSDFI
ELLTLVSQKMCVVVYPEVERGSGTEEANEDMEEQQQPMYQPTPTKDKDVAGQPQP
Number of residues
535
Molecular Weight
58381.12
Theoretical pI
5.75
GO Classification
Functions
amino acid transmembrane transporter activity / antiporter activity / L-amino acid transmembrane transporter activity / neutral amino acid transmembrane transporter activity / organic cation transmembrane transporter activity / peptide antigen binding / toxin transporter activity
Processes
amino acid transmembrane transport / amino acid transport / blood coagulation / cellular amino acid metabolic process / ion transport / leukocyte migration / metal ion homeostasis / neutral amino acid transport / organic cation transport / response to toxic substance / toxin transport / transmembrane transport / transport
Components
basolateral plasma membrane / cytoplasm / extracellular exosome / integral component of plasma membrane / plasma membrane
General Function
Toxin transporter activity
Specific Function
Sodium-independent, high-affinity transport of small and large neutral amino acids such as alanine, serine, threonine, cysteine, phenylalanine, tyrosine, leucine, arginine and tryptophan, when associated with SLC3A2/4F2hc. Acts as an amino acid exchanger. Has higher affinity for L-phenylalanine than LAT1 but lower affinity for glutamine and serine. L-alanine is transported at physiological concentrations. Plays a role in basolateral (re)absorption of neutral amino acids. Involved in the uptake of methylmercury (MeHg) when administered as the L-cysteine or D,L-homocysteine complexes, and hence plays a role in metal ion homeostasis and toxicity. Involved in the cellular activity of small molecular weight nitrosothiols, via the stereoselective transport of L-nitrosocysteine (L-CNSO) across the transmembrane. Plays an essential role in the reabsorption of neutral amino acids from the epithelial cells to the bloodstream in the kidney.
Pfam Domain Function
Transmembrane Regions
40-60 72-92 113-133 155-175 189-209 231-251 268-288 310-330 362-382 388-408 424-444 447-467
Cellular Location
Cytoplasm
Gene sequence
>lcl|BSEQ0016208|Large neutral amino acids transporter small subunit 2 (SLC7A8)
ATGGGGCAGTATGGGCAGGAGCTTAGCTGGAAGTGTTTGGTAAAAGCTGTGTGCCTCCAG
GAGCACTCACAGCCCTCACAGCTTCTCTGCACCCTCCTCCTCTGCTGGTGTGTCCTTGGA
AGAGAGAGGCCCTTCCGGAAGGCTCAGAGCACCTCCTCTCCTTTGGAGGGGGTTCCGAGA
TTTCTAAAACGTTTGCTCCTCACATGGGTCAACTGTTCCAGTGTGCGGTGGGCCACCCGG
GTTCAAGACATCTTCACAGCTGGGAAGCTCCTGGCCTTGGCCCTGATTATCATCATGGGG
ATTGTACAGATATGCAAAGGAGAGTACTTCTGGCTGGAGCCAAAGAATGCATTTGAGAAT
TTCCAGGAACCTGACATCGGCCTCGTCGCACTGGCTTTCCTTCAGGGCTCCTTTGCCTAT
GGAGGCTGGAACTTTCTGAATTACGTGACTGAGGAGCTTGTTGATCCCTACAAGAACCTT
CCCAGAGCCATCTTCATCTCCATCCCACTGGTCACATTTGTGTATGTCTTTGCCAATGTC
GCTTATGTCACTGCAATGTCCCCCCAGGAGCTGCTGGCATCCAACGCCGTCGCTGTGACT
TTTGGAGAGAAGCTCCTAGGAGTCATGGCCTGGATCATGCCCATTTCTGTTGCCCTGTCC
ACATTTGGAGGAGTTAATGGGTCTCTCTTCACCTCCTCTCGGCTGTTCTTCGCTGGAGCC
CGAGAGGGCCACCTTCCCAGTGTGTTGGCCATGATCCACGTGAAGCGCTGCACCCCAATC
CCAGCCCTGCTCTTCACATGCATCTCCACCCTGCTGATGCTGGTCACCAGCGACATGTAC
ACACTCATCAACTATGTGGGCTTCATCAACTACCTCTTCTATGGGGTCACGGTTGCTGGA
CAGATAGTCCTTCGCTGGAAGAAGCCTGATATCCCCCGCCCCATCAAGATCAACCTGCTG
TTCCCCATCATCTACTTGCTGTTCTGGGCCTTCCTGCTGGTCTTCAGCCTGTGGTCAGAG
CCGGTGGTGTGTGGCATTGGCCTGGCCATCATGCTGACAGGAGTGCCTGTCTATTTCCTG
GGTGTTTACTGGCAACACAAGCCCAAGTGTTTCAGTGACTTCATTGAGCTGCTAACCCTG
GTGAGCCAGAAGATGTGTGTGGTCGTGTACCCCGAGGTGGAGCGGGGCTCAGGGACAGAG
GAGGCTAATGAGGACATGGAGGAGCAGCAGCAGCCCATGTACCAACCCACTCCCACGAAG
GACAAGGACGTGGCGGGGCAGCCCCAGCCCTGA
Chromosome Location
14
Locus
14q11.2
External Identifiers
ResourceLink
UniProtKB IDQ9UHI5
UniProtKB Entry NameLAT2_HUMAN
GenBank Protein ID6642960
GenBank Gene IDAF171669
GenAtlas IDSLC7A8
HGNC IDHGNC:11066
General References
  1. Pineda M, Fernandez E, Torrents D, Estevez R, Lopez C, Camps M, Lloberas J, Zorzano A, Palacin M: Identification of a membrane protein, LAT-2, that Co-expresses with 4F2 heavy chain, an L-type amino acid transport activity with broad specificity for small and large zwitterionic amino acids. J Biol Chem. 1999 Jul 9;274(28):19738-44. [Article]
  2. Rossier G, Meier C, Bauch C, Summa V, Sordat B, Verrey F, Kuhn LC: LAT2, a new basolateral 4F2hc/CD98-associated amino acid transporter of kidney and intestine. J Biol Chem. 1999 Dec 3;274(49):34948-54. [Article]
  3. Borsani G, Bassi MT, Sperandeo MP, De Grandi A, Buoninconti A, Riboni M, Manzoni M, Incerti B, Pepe A, Andria G, Ballabio A, Sebastio G: SLC7A7, encoding a putative permease-related protein, is mutated in patients with lysinuric protein intolerance. Nat Genet. 1999 Mar;21(3):297-301. [Article]
  4. Park SY, Kim JK, Kim IJ, Choi BK, Jung KY, Lee S, Park KJ, Chairoungdua A, Kanai Y, Endou H, Kim DK: Reabsorption of neutral amino acids mediated by amino acid transporter LAT2 and TAT1 in the basolateral membrane of proximal tubule. Arch Pharm Res. 2005 Apr;28(4):421-32. [Article]
  5. Ota T, Suzuki Y, Nishikawa T, Otsuki T, Sugiyama T, Irie R, Wakamatsu A, Hayashi K, Sato H, Nagai K, Kimura K, Makita H, Sekine M, Obayashi M, Nishi T, Shibahara T, Tanaka T, Ishii S, Yamamoto J, Saito K, Kawai Y, Isono Y, Nakamura Y, Nagahari K, Murakami K, Yasuda T, Iwayanagi T, Wagatsuma M, Shiratori A, Sudo H, Hosoiri T, Kaku Y, Kodaira H, Kondo H, Sugawara M, Takahashi M, Kanda K, Yokoi T, Furuya T, Kikkawa E, Omura Y, Abe K, Kamihara K, Katsuta N, Sato K, Tanikawa M, Yamazaki M, Ninomiya K, Ishibashi T, Yamashita H, Murakawa K, Fujimori K, Tanai H, Kimata M, Watanabe M, Hiraoka S, Chiba Y, Ishida S, Ono Y, Takiguchi S, Watanabe S, Yosida M, Hotuta T, Kusano J, Kanehori K, Takahashi-Fujii A, Hara H, Tanase TO, Nomura Y, Togiya S, Komai F, Hara R, Takeuchi K, Arita M, Imose N, Musashino K, Yuuki H, Oshima A, Sasaki N, Aotsuka S, Yoshikawa Y, Matsunawa H, Ichihara T, Shiohata N, Sano S, Moriya S, Momiyama H, Satoh N, Takami S, Terashima Y, Suzuki O, Nakagawa S, Senoh A, Mizoguchi H, Goto Y, Shimizu F, Wakebe H, Hishigaki H, Watanabe T, Sugiyama A, Takemoto M, Kawakami B, Yamazaki M, Watanabe K, Kumagai A, Itakura S, Fukuzumi Y, Fujimori Y, Komiyama M, Tashiro H, Tanigami A, Fujiwara T, Ono T, Yamada K, Fujii Y, Ozaki K, Hirao M, Ohmori Y, Kawabata A, Hikiji T, Kobatake N, Inagaki H, Ikema Y, Okamoto S, Okitani R, Kawakami T, Noguchi S, Itoh T, Shigeta K, Senba T, Matsumura K, Nakajima Y, Mizuno T, Morinaga M, Sasaki M, Togashi T, Oyama M, Hata H, Watanabe M, Komatsu T, Mizushima-Sugano J, Satoh T, Shirai Y, Takahashi Y, Nakagawa K, Okumura K, Nagase T, Nomura N, Kikuchi H, Masuho Y, Yamashita R, Nakai K, Yada T, Nakamura Y, Ohara O, Isogai T, Sugano S: Complete sequencing and characterization of 21,243 full-length human cDNAs. Nat Genet. 2004 Jan;36(1):40-5. Epub 2003 Dec 21. [Article]
  6. Heilig R, Eckenberg R, Petit JL, Fonknechten N, Da Silva C, Cattolico L, Levy M, Barbe V, de Berardinis V, Ureta-Vidal A, Pelletier E, Vico V, Anthouard V, Rowen L, Madan A, Qin S, Sun H, Du H, Pepin K, Artiguenave F, Robert C, Cruaud C, Bruls T, Jaillon O, Friedlander L, Samson G, Brottier P, Cure S, Segurens B, Aniere F, Samain S, Crespeau H, Abbasi N, Aiach N, Boscus D, Dickhoff R, Dors M, Dubois I, Friedman C, Gouyvenoux M, James R, Madan A, Mairey-Estrada B, Mangenot S, Martins N, Menard M, Oztas S, Ratcliffe A, Shaffer T, Trask B, Vacherie B, Bellemere C, Belser C, Besnard-Gonnet M, Bartol-Mavel D, Boutard M, Briez-Silla S, Combette S, Dufosse-Laurent V, Ferron C, Lechaplais C, Louesse C, Muselet D, Magdelenat G, Pateau E, Petit E, Sirvain-Trukniewicz P, Trybou A, Vega-Czarny N, Bataille E, Bluet E, Bordelais I, Dubois M, Dumont C, Guerin T, Haffray S, Hammadi R, Muanga J, Pellouin V, Robert D, Wunderle E, Gauguet G, Roy A, Sainte-Marthe L, Verdier J, Verdier-Discala C, Hillier L, Fulton L, McPherson J, Matsuda F, Wilson R, Scarpelli C, Gyapay G, Wincker P, Saurin W, Quetier F, Waterston R, Hood L, Weissenbach J: The DNA sequence and analysis of human chromosome 14. Nature. 2003 Feb 6;421(6923):601-7. Epub 2003 Jan 1. [Article]
  7. 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. [Article]
  8. Broer A, Friedrich B, Wagner CA, Fillon S, Ganapathy V, Lang F, Broer S: Association of 4F2hc with light chains LAT1, LAT2 or y+LAT2 requires different domains. Biochem J. 2001 May 1;355(Pt 3):725-31. [Article]
  9. Simmons-Willis TA, Koh AS, Clarkson TW, Ballatori N: Transport of a neurotoxicant by molecular mimicry: the methylmercury-L-cysteine complex is a substrate for human L-type large neutral amino acid transporter (LAT) 1 and LAT2. Biochem J. 2002 Oct 1;367(Pt 1):239-46. [Article]
  10. Liu X, Charrier L, Gewirtz A, Sitaraman S, Merlin D: CD98 and intracellular adhesion molecule I regulate the activity of amino acid transporter LAT-2 in polarized intestinal epithelia. J Biol Chem. 2003 Jun 27;278(26):23672-7. Epub 2003 Apr 25. [Article]
  11. Gandhi MD, Pal D, Mitra AK: Identification and functional characterization of a Na(+)-independent large neutral amino acid transporter (LAT2) on ARPE-19 cells. Int J Pharm. 2004 May 4;275(1-2):189-200. [Article]
  12. Fraga S, Pinho MJ, Soares-da-Silva P: Expression of LAT1 and LAT2 amino acid transporters in human and rat intestinal epithelial cells. Amino Acids. 2005 Nov;29(3):229-33. Epub 2005 Jul 20. [Article]
  13. Li S, Whorton AR: Identification of stereoselective transporters for S-nitroso-L-cysteine: role of LAT1 and LAT2 in biological activity of S-nitrosothiols. J Biol Chem. 2005 May 20;280(20):20102-10. Epub 2005 Mar 15. [Article]

Drug Relations

Drug Relations
DrugBank IDNameDrug groupPharmacological action?ActionsDetails
DB00120Phenylalanineapproved, investigational, nutraceuticalunknownDetails
DB00160AlaninenutraceuticalunknownDetails
DB00130L-Glutamineapproved, investigational, nutraceuticalunknownsubstrateDetails
DB02750S-(Methylmercury)-L-CysteineexperimentalunknownDetails
DB01235LevodopaapprovedunknownDetails