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2.A.1.44.2
L-amino acid transporter-4 (LAT4) has the same specificity and is 57% identity to LAT3. Na+, Cl- and pH independent; not trans-stimulated; it has been reported to have two kinetic components, a low affinity component sensitive to NEM, and a high affinity component insensitive to NEM. It is found in the basolateral membrane of epithelial cells in the distal tubule and collecting duct of the kidney and the crypt cells in the intestine (Bodoy et al., 2005). It can transport throid hormones such as 3,3'-T2 (Krause and Hinz 2019).

Accession Number:Q8N370
Protein Name:Solute carrier family 43, member 2 (LAT4)
Length:569
Molecular Weight:62747.00
Species:Homo sapiens (Human) [9606]
Number of TMSs:12
Location1 / Topology2 / Orientation3: Membrane1 / Multi-pass membrane protein2
Substrate L-isoleucine, L-valine, L-leucine, L-phenylalanine

Cross database links:

RefSeq: NP_689559.1   
Entrez Gene ID: 124935   
Pfam: PF07690   
OMIM: 610791  gene
KEGG: hsa:124935    hsa:124935   

Gene Ontology

GO:0016021 C:integral to membrane
GO:0005886 C:plasma membrane
GO:0015171 F:amino acid transmembrane transporter activity
GO:0006865 P:amino acid transport
GO:0055085 P:transmembrane transport
GO:0015179 F:L-amino acid transmembrane transporter activity
GO:0006811 P:ion transport

References (10)

[1] “Identification of LAT4, a novel amino acid transporter with system L activity.”  Bodoy S.et.al.   15659399
[2] “Large-scale cDNA transfection screening for genes related to cancer development and progression.”  Wan D.et.al.   15498874
[3] “The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC).”  The MGC Project Teamet.al.   15489334
[4] “Complete sequencing and characterization of 21,243 full-length human cDNAs.”  Ota T.et.al.   14702039
[5] “A quantitative atlas of mitotic phosphorylation.”  Dephoure N.et.al.   18669648
[6] “Identification of LAT4, a novel amino acid transporter with system L activity.”  Bodoy S.et.al.   15659399
[7] “Large-scale cDNA transfection screening for genes related to cancer development and progression.”  Wan D.et.al.   15498874
[8] “The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC).”  The MGC Project Teamet.al.   15489334
[9] “Complete sequencing and characterization of 21,243 full-length human cDNAs.”  Ota T.et.al.   14702039
[10] “A quantitative atlas of mitotic phosphorylation.”  Dephoure N.et.al.   18669648

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence 
1:	MAPTLATAHR RRWWMACTAV LENLLFSAVL LGWGSLLIML KSEGFYSYLC TEPENVTNGT 
61:	VGGTAEPGHE EVSWMNGWLS CQAQDEMLNL AFTVGSFLLS AITLPLGIVM DKYGPRKLRL 
121:	LGSACFAVSC LLIAYGASKP NALSVLIFIA LALNGFGGMC MTFTSLTLPN MFGDLRSTFI 
181:	ALMIGSYASS AVTFPGIKLI YDAGVSFIVV LVVWAGCSGL VFLNCFFNWP LEPFPGPEDM 
241:	DYSVKIKFSW LGFDHKITGK QFYKQVTTVG RRLSVGSSMR SAKEQVALQE GHKLCLSTVD 
301:	LEVKCQPDAA VAPSFMHSVF SPILLLSLVT MCVTQLRLIF YMGAMNNILK FLVSGDQKTV 
361:	GLYTSIFGVL QLLCLLTAPV IGYIMDWRLK ECEDASEEPE EKDANQGEKK KKKRDRQIQK 
421:	ITNAMRAFAF TNLLLVGFGV TCLIPNLPLQ ILSFILHTIV RGFIHSAVGG LYAAVYPSTQ 
481:	FGSLTGLQSL ISALFALLQQ PLFLAMMGPL QGDPLWVNVG LLLLSLLGFC LPLYLICYRR 
541:	QLERQLQQRQ EDDKLFLKIN GSSNQEAFV