Q36 · CSIR-NET Chemistry, December 2011

Paper: CSIR-NET December 2011 · Subject: Inorganic Chemistry · Chapter: Bioinorganic Chemistry · Topic: Iron Sulfur Proteins · Marks: 2 · Difficulty: Medium

A metal ion that replace manganese (II) ion in mangano-proteins without changing its function, is

(a)Fe (II)

(b)Zn (II)

(c)Mg (II)

(d)Cu (II)

Answer

Answer: C ✓ checked by 4AB · confidence high

Explanation

Mg²⁺ and Mn²⁺ have similar size, charge and lack of redox activity, so Mg(II) can replace Mn(II) in many mangano-enzymes with retention of function.

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