Catalyzes the first reaction in the catabolism of the essential branched chain amino acids leucine, isoleucine, and valine. Belongs to the class-IV pyridoxal-phosphate-dependent aminotransferase family. 4 isoforms of the human protein are produced by alternative splicing. Note: This description may include information from UniProtKB.
Protein type: Transferase; Amino Acid Metabolism - valine, leucine and isoleucine degradation; EC 188.8.131.52; Cofactor and Vitamin Metabolism - pantothenate and CoA biosynthesis; Amino Acid Metabolism - valine, leucine and isoleucine biosynthesis
Cellular Component: mitochondrion; cytosol
Molecular Function: identical protein binding; branched-chain-amino-acid transaminase activity
Biological Process: cell proliferation; branched chain family amino acid catabolic process; G1/S transition of mitotic cell cycle; branched chain family amino acid biosynthetic process
SS: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.