Large neutral amino acids transporter small subunit 2

NameLarge neutral amino acids transporter small subunit 2
Synonyms
  • hLAT2
  • L-type amino acid transporter 2
  • LAT2
  • Solute carrier family 7 member 8
Gene NameSLC7A8
OrganismHuman
Amino acid sequence
>lcl|BSEQ0001574|Large neutral amino acids transporter small subunit 2
MEEGARHRNNTEKKHPGGGESDASPEAGSGGGGVALKKEIGLVSACGIIVGNIIGSGIFV
SPKGVLENAGSVGLALIVWIVTGFITVVGALCYAELGVTIPKSGGDYSYVKDIFGGLAGF
LRLWIAVLVIYPTNQAVIALTFSNYVLQPLFPTCFPPESGLRLLAAICLLLLTWVNCSSV
RWATRVQDIFTAGKLLALALIIIMGIVQICKGEYFWLEPKNAFENFQEPDIGLVALAFLQ
GSFAYGGWNFLNYVTEELVDPYKNLPRAIFISIPLVTFVYVFANVAYVTAMSPQELLASN
AVAVTFGEKLLGVMAWIMPISVALSTFGGVNGSLFTSSRLFFAGAREGHLPSVLAMIHVK
RCTPIPALLFTCISTLLMLVTSDMYTLINYVGFINYLFYGVTVAGQIVLRWKKPDIPRPI
KINLLFPIIYLLFWAFLLVFSLWSEPVVCGIGLAIMLTGVPVYFLGVYWQHKPKCFSDFI
ELLTLVSQKMCVVVYPEVERGSGTEEANEDMEEQQQPMYQPTPTKDKDVAGQPQP
Number of residues535
Molecular Weight58381.12
Theoretical pI5.75
GO Classification
Functions
  • neutral amino acid transmembrane transporter activity
  • amino acid transmembrane transporter activity
  • peptide antigen binding
  • toxin transporter activity
  • organic cation transmembrane transporter activity
  • antiporter activity
  • L-amino acid transmembrane transporter activity
Processes
  • transmembrane transport
  • leukocyte migration
  • response to toxic substance
  • neutral amino acid transport
  • transport
  • ion transport
  • amino acid transmembrane transport
  • amino acid transport
  • organic cation transport
  • blood coagulation
  • toxin transport
  • metal ion homeostasis
  • cellular amino acid metabolic process
Components
  • integral component of plasma membrane
  • basolateral plasma membrane
  • cytoplasm
  • plasma membrane
  • extracellular exosome
General FunctionToxin transporter activity
Specific FunctionSodium-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 Regions40-60 72-92 113-133 155-175 189-209 231-251 268-288 310-330 362-382 388-408 424-444 447-467
GenBank Protein ID6642960
UniProtKB IDQ9UHI5
UniProtKB Entry NameLAT2_HUMAN
Cellular LocationCytoplasm
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
GenBank Gene IDAF171669
GeneCard IDNot Available
GenAtlas IDSLC7A8
HGNC IDHGNC:11066
Chromosome Location14
Locus14q11.2
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. 10391915
  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. 10574970
  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. 10080183
  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. 15918515
  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. 14702039
  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. 12508121
  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. 15489334
  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. 11311135
  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. 12117417
  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. 12716892
  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. 15081149
  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. 16027961
  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. 15769744