Biological process

menaquinone breakdown, menaquinone catabolism, menaquinone degradation, menatetrenone catabolic process, menatetrenone catabolism, multiprenylmenaquinone catabolic process, multiprenylmenaquinone catabolism, vitamin K2 catabolic process, vitamin K2 catabolism

The chemical reactions and pathways resulting in the breakdown of menaquinones, any of the quinone-derived compounds synthesized by intestinal bacteria. Structurally, menaquinones consist of a methylated naphthoquinone ring structure and side chains composed of a variable number of unsaturated isoprenoid residues. Menaquinones have vitamin K activity and are known as vitamin K2.