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Overview

Uniprot IDH0VCS0
Protein NameVesicular inhibitory amino acid transporter
Gene NameSLC32A1
OrganismCavia porcellus

Kla Sites from experimental identification

Position Flanking peptide
8 MATLLRSKLSNVATS

Function

Antiporter that exchanges vesicular protons for cytosolic 4-aminobutanoate or to a lesser extend glycine, thus allowing their secretion from nerve terminals. The transport is equally dependent on the chemical and electrical components of the proton gradient. May also transport beta-alanine. Acidification of GABAergic synaptic vesicles is a prerequisite for 4-aminobutanoate uptake

Protein Sequence

10 MATLLRSKLS 20 NVATSVSNKS 30 QAKVSGMFAR 40 MGFQAATDEE 50 AVGFAHCDDL 60 DFEHRQGLQM 70 DILKAEGEPC 80 GEEGAEPPVE 90 GDIHYQRGGG 100 APLPPSGSKD 110 QGMGAGGEFG 120 GHDKPKITAW 130 EAGWNVTNAI 140 QGMFVLGLPY 150 AILHGGYLGL 160 FLIIFAAVVC 170 CYTGKILIAC 180 LYEENEDGEV 190 VRVRDSYVAI 200 ANACCAPRFP 210 TLGGRVVNVA 220 QIIELVMTCI 230 LYVVVSGNLM 240 YNSFPGLPVS 250 QKSWSIIATA 260 VLLPCAFLKN 270 LKAVSKFSLL 280 CTLAHFVINI 290 LVIAYCLSRA 300 RDWAWEKVKF 310 YIDVKKFPIS 320 IGIIVFSYTS 330 QIFLPSLEGN 340 MQQPSEFHCM 350 MNWTHIAACV 360 LKGLFALVAY 370 LTWADETKEV 380 ITDNLPGSIR 390 AVVNIFLVAK 400 ALLSYPLPFF 410 AAVEVLEKSL 420 FQEGSRAFFP 430 ACYGGDGRLK 440 SWGLTLRCAL 450 VVFTLLMAIY 460 VPHFALLMGL 470 TGSLTGAGLC 480 FLLPSLFHLR 490 LLWRKLLWHQ 500 VFFDVAIFVI 510 GGICSVSGFV 520 HSLEGLIEAY RTNAED

Gene Ontology

Classification GO ID Description
Cellular Component GO:0009986 cell surface
Cellular Component GO:0051286 cell tip
Cellular Component GO:0044316 cone cell pedicle
Cellular Component GO:0030659 cytoplasmic vesicle membrane
Cellular Component GO:0044292 dendrite terminus
Cellular Component GO:0060077 inhibitory synapse
Cellular Component GO:0048786 presynaptic active zone
Cellular Component GO:0005774 vacuolar membrane
Molecular Function GO:0140800 gamma-aminobutyric acid:proton antiporter activity
Molecular Function GO:0140799 glycine:proton antiporter activity
Molecular Function GO:0015179 L-amino acid transmembrane transporter activity
Biological Process GO:0051939 gamma-aminobutyric acid import
Biological Process GO:0006836 neurotransmitter transport

Reference

[1] Feng J, Chen X, Li R, Xie Y, Zhang X et al.. Lactylome analysis reveals potential target modified proteins in the retina of form-deprivation myopia.. iScience 27(9):110606. 2024 Sep 20. PMID: 39246443.