Q23 · CSIR-NET Chemistry, June 2019

Paper: CSIR-NET June 2019 · Subject: Inorganic Chemistry · Chapter: Bioinorganic Chemistry · Topic: Zinc Enzymes · Marks: 2 · Difficulty: Easy

Consider the following statements with respect to Cytochrome P-450 (A) It has histidine coordinated to iron centre (B) It is a membrane bound metalloenzymes (C) It has Fe(III) ion in the resting state of the enzyme The correct statement(s) is/are

(a)A, B

(b)A, C

(c)B, C

(d)A only

Answer

Answer: C ✓ checked by 4AB · confidence high

Explanation

Cytochrome P-450 is a membrane-bound haem enzyme with a cysteine thiolate (not histidine) as the axial ligand and Fe(III) in the resting state: statements B and C.

Study loop for Bioinorganic Chemistry

1. Practise the PYQsPrevious-year questions, with answers

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