~50% of enzymes require metal cofactors: Zn (carbonic anhydrase, matrix metalloproteinase), Fe (cytochromes, ribonucleotide reductase), Cu (cytochrome c oxidase), Mo (nitrogenase).
~50% of enzymes require metal cofactors: Zn (carbonic anhydrase, matrix metalloproteinase), Fe (cytochromes, ribonucleotide reductase), Cu (cytochrome c oxidase), Mo (nitrogenase).