amino acid catabolic process branched-chain amino acid metabolic process branched-chain amino acid catabolic process biological_process branched chain family amino acid catabolism GO:0009083 branched chain family amino acid catabolic process The chemical reactions and pathways resulting in the breakdown of amino acids containing a branched carbon skeleton, comprising isoleucine, leucine and valine. Reactome:R-HSA-70895 branched chain family amino acid breakdown branched chain family amino acid degradation carboxylic acid catabolic process