From Wikipedia, the free encyclopedia
Family of protein complexes
CD98 is a
glycoprotein
[1]
[2] that is a heterodimer composed of
SLC3A2 and
SLC7A5 that forms the large neutral amino acid transporter (LAT1). LAT1 is a heterodimeric
membrane transport protein that preferentially transports
branched-chain (
valine,
leucine,
isoleucine) and
aromatic (
tryptophan,
tyrosine,
phenylalanine)
amino acids.
[3] LAT is highly expressed in brain
capillaries (which form the
blood–brain barrier) relative to other tissues.
[3]
A functional LAT1 transporter is composed of two proteins encoded by two distinct genes:
- 4F2hc/CD98 heavy subunit protein encoded by the
SLC3A2 gene
[4]
- CD98 light subunit protein encoded by the
SLC7A5 gene
[5]
See also
References
-
^ Kucharzik T, Lugering A, Yan Y, Driss A, Charrier L, Sitaraman S, Merlin D (2005). "Activation of epithelial CD98 glycoprotein perpetuates colonic inflammation". Lab. Invest. 85 (7): 932–41.
doi:
10.1038/labinvest.3700289.
PMID
15880135.
S2CID
19733993.
-
^ Lemaître G, Gonnet F, Vaigot P, Gidrol X, Martin MT, Tortajada J, Waksman G (2005). "CD98, a novel marker of transient amplifying human keratinocytes". Proteomics. 5 (14): 3637–45.
doi:
10.1002/pmic.200401224.
PMID
16097038.
S2CID
31954787.
- ^
a
b Boado RJ, Li JY, Nagaya M, Zhang C, Pardridge WM (1999).
"Selective expression of the large neutral amino acid transporter at the blood–brain barrier". Proc. Natl. Acad. Sci. U.S.A. 96 (21): 12079–84.
Bibcode:
1999PNAS...9612079B.
doi:
10.1073/pnas.96.21.12079.
PMC
18415.
PMID
10518579.
-
^ Palacin M, Kanai Y (2004). "The ancillary proteins of HATs: SLC3 family of amino acid transporters". Pflügers Arch. 447 (5): 490–494.
doi:
10.1007/s00424-003-1062-7.
PMID
14770309.
S2CID
25808108.
-
^ Verrey F, Closs EI, Wagner CA, Palacin M, Endou H, Kanai Y (2004).
"CATs and HATs: the SLC7 family of amino acid transporters" (PDF). Pflügers Arch. 447 (5): 532–542.
doi:
10.1007/s00424-003-1086-z.
PMID
14770310.
S2CID
11670040.
External links
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