Enzyme Nomenclature. Recommendations
EC 1.21.98.1 cyclic dehypoxanthinyl futalosine synthase
EC 1.21.98.2 dichlorochromopyrrolate synthase
EC 1.21.98.3 anaerobic magnesium-protoporphyrin IX monomethyl ester cyclase
EC 1.21.98.4 PqqA peptide cyclase
EC 1.21.98.5 tetraether lipid synthase