Catalyzes the first reaction in the catabolism of the essential branched chain amino acids leucine, isoleucine, and valine. May also function as a transporter of branched chain alpha-keto acids. Belongs to the class-IV pyridoxal-phosphate-dependent aminotransferase family. Homodimer. 2 isoforms of the human protein are produced by alternative splicing. Note: This description may include information from UniProtKB.
Protein type: Cofactor and Vitamin Metabolism - pantothenate and CoA biosynthesis; Amino Acid Metabolism - valine, leucine and isoleucine biosynthesis; Amino Acid Metabolism - valine, leucine and isoleucine degradation; EC 126.96.36.199; Transferase; Mitochondrial
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.