. "FUNCTION: Catalyzes the conversion of gamma-aminobutyrate and L- beta-aminoisobutyrate to succinate semialdehyde and methylmalonate semialdehyde, respectively. Can also convert delta-aminovalerate and beta-alanine. CATALYTIC ACTIVITY: 4-aminobutanoate + 2-oxoglutarate = succinate semialdehyde + L-glutamate. CATALYTIC ACTIVITY: (S)-3-amino-2-methylpropanoate + 2- oxoglutarate = 2-methyl-3-oxopropanoate + L-glutamate. COFACTOR: Pyridoxal phosphate. SUBUNIT: Homodimer; disulfide-linked. SUBCELLULAR LOCATION: Mitochondrion matrix. SIMILARITY: Belongs to the class-III pyridoxal-phosphate-dependent aminotransferase family. GENE SYNONYMS:Abat Gabat. COPYRIGHT: Protein annotation is derived from the UniProt Consortium (http://www.uniprot.org/). Distributed under the Creative Commons Attribution-NoDerivs License."^^ . "SEQUENCE 500 AA; 56456 MW; 1EA7180B72797B72 CRC64;"^^ . . . . . . . "GABT_RAT"^^ . "2.6.1.19"^^ . "GABA-T"^^ . "(S)-3-amino-2-methylpropionate transaminase"^^ . "GABA aminotransferase"^^ . "GABA-AT"^^ . "GABA transaminase"^^ . "2.6.1.22"^^ . "L-AIBAT"^^ . "Gamma-amino-N-butyrate transaminase"^^ . "4-aminobutyrate aminotransferase, brain isoform"^^ . "Abat"^^ . "4-aminobutyrate aminotransferase, liver isoform"^^ . . . . "MAFLLTTRRLVCSSQKNLHLFTPGSRYISQAAAKVDFEFDYDGPLMKTEVPGPRSQELMKQLNTIQNAEAVHFFCNYEESRGNYLVDVDGNRMLDLYSQISSVPIGYNHPALAKLVQQPQNASTFINRPALGILPPENFVDKLRESLMSVAPKGMCQLITMACGSCSNENAFKTIFMWYRSKERGQRGFSKEELETCMVNQSPGCPDYSILSFMGAFHGRTMGCLATTHSKAIHKIDIPSFDWPIAPFPRLKYPLEEFVTDNQQEEARCLEEVEDLIVKYRKKKRTVAGIIVEPIQSEGGDNHASDDFFRKLRDIARKHGCAFLVDEVQTGGGCTGKFWAHEHWGLDDPADVMSFSKKMMTGGFFHKEEFRPSAPYRIFNTWLGDPSKNLLLAEVINIIKREDLLNNVAHAGKTLLTGLLDLQAQYPQFVSRVRGRGTFCSFDTPDEAIRNKLILIARNKGVVLGGCGDKSIRFRPTLVFRDHHAHLFLNIFSGILADFK"^^ . "4-aminobutyrate aminotransferase, mitochondrial"^^ .