L-leucine metabolic process L-leucine catabolic process https://github.com/geneontology/go-ontology/issues/30047 https://github.com/geneontology/go-ontology/issues/31405 https://github.com/geneontology/go-ontology/issues/31839 The chemical reactions and pathways resulting in the breakdown of L-leucine. L-methionine catabolic process via Ehrlich pathway MetaCyc:PWY-7767 L-leucine degradation via Ehrlich pathway L-leucine degradation leucine catabolic process MetaCyc:LEU-DEG2-PWY L-leucine breakdown MetaCyc:PWY-5076 MetaCyc:PWY-5075 MetaCyc:PWY-8185 GO:0006552 biological_process L-leucine catabolism branched-chain amino acid catabolic process L-amino acid catabolic process proteinogenic amino acid catabolic process