EOG8S1WSH GO:0003824 1/3 catalytic activity molecular_function "Catalysis of a biochemical reaction at physiological temperatures. In biologically catalyzed reactions, the reactants are known as substrates, and the catalysts are naturally occurring macromolecular substances known as enzymes. Enzymes possess specific binding sites for substrates, and are usually composed wholly or largely of protein, but RNA that has catalytic activity (ribozyme) is often also regarded as enzymatic." [ISBN:0198506732] EOG8S1WSH GO:0006777 1/3 Mo-molybdopterin cofactor biosynthetic process biological_process "The chemical reactions and pathways resulting in the formation of the Mo-molybdopterin cofactor, essential for the catalytic activity of some enzymes. The cofactor consists of a mononuclear molybdenum (Mo) ion coordinated by one or two molybdopterin ligands." [http://www.sunysb.edu/biochem/BIOCHEM/facultypages/schindelin/, ISSN:09498257, PMID:22370186, PMID:23201473]