Iron is present in which protein | Crack PGIMER 22 MAY 2016

Iron is present in which protein 

A. Na-K-ATPase 
B. Superoxide dismutase 
C. Cytochrome C 
D. Peroxidase 
E. Metallothionene

The Answer is. (C) Cytochrome C ; (D) Peroxidase:

• Iron is present as cofactor in eizymes

— Cytochrome C

— Peroxidase

— Catalase

• Superoxide dismutase — copper present

• Metallothionene—cystine + metal (Cu, Zn, Cd, Hg)

• Na-K-ATPase contains — Mg²⁺ as cofactor.