in the presence of a cytoplasmic supernatant , however , mevalonate and the phosphomevalonates were incorporated into the plastidal polyprenoids in equally large amounts , which demonstrates that the enzymes mevalonate kinase ( ec 2.7.1.36 ) , phosphomevalonate kinase ( ec 2.7.4.2 ) , and diphosphomevalonate decarboxylase ( ec 4.1.1.33 ) are soluble cytoplasmic enzymes and that they apparently do not occur as isoenzymes within the plastids .
C0014442
enzymes
C0022173
isoenzymes