In metalloenzymes. where the metal acts solely as a Lewis Add, the metal does no

Question

In metalloenzymes. where the metal acts solely as a Lewis Add, the metal does not change oxidation state or protein ligands. In zinc-containing enzymes, the metal ion is often coordinated to the protein via three ligands The fourth coordination position can be occupied by a labile water molecule. Changes in the coordination sphere occur on the side exposed to the solvent or water Zn(ll) is an ion of borderline hardness. What types of donor atoms would be likely to bind? What amino acids would you predict to be involved as ligands in the active sites of these enzymes? in this active site, show how Zn(ll) can deprotonate a water molecule

Explanation / Answer

N , O donar atoms would be likley to bind.

The amino acids involved as ligands in the active site of these enzymes is Arginine, Tyrosine

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