Most enzymes are proteins. Could be monomeric or oligomeric enzymes; Could be simple or conjugated enzymes; holoenzyme=apoenzyme cofactor 可 Table 3.1 for the most important coenzymes. 5Most enzymes are proteins. Could be monomeric or oligomeric enzymes; Could be simple or conjugated enzymes; holoenzyme = apoenzyme + cofactor Table 3.1 for the most important coenzymes. 5