3.4.17.3 Co2+ activates 36395 3.4.17.3 Co2+ can replace Co2+ as cofactor 36394 3.4.17.3 additional information metalloenzyme, methyl is tightly bound to the apoenzyme at neutral pH 36405 3.4.17.3 Zinc contains 0.96 gatom of zinc per mol of enzyme 36396 3.4.17.3 Zinc zinc metalloenzyme 36395, 36396 3.4.17.3 Zinc zinc metalloprotease 36415 3.4.17.3 Zinc Zn2+ required 36394 3.4.17.3 Zn2+ zinc-metalloprotease 670291