Which metal ion is present as cofactor in carboxypeptidase ?

Z n^{+ +}

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M n^{+ +}

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C l^{-}

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Solution

The correct option is B $Z n^{+ +}$
Carboxypeptidase commonly called as CPA plays an important role in the metabolism of protein. It contains zinc ion as cofactor which helps in hydrolyzes of carbon in COOH group present on one of the terminals of amino acids. Loss of this $Z n + 2$ ion will destroy the enzymatic activity of CPA as enzyme commonly follow the lock and key mechanisms which demands unaltered structures.
So, the correct answer is " $Z n + 2$ ".

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Similar questions

Which one of the following can not be categorized as metal ion cofactor?

In the reaction Zn +2 $H^{+}$ +2 $C l^{-}$ $⟶$ $Z n^{+} 2$ + 2 $C l^{-}$ + $H_{2}$ the spectator ion

$Z n + 2 H^{+} + 2 C l^{-} - - - - - - - > Z n^{2 +} + 2 C l^{-} + H_{2}$

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