BSOD Protein Consists Of

Bovine Superoxide Dismutase (BSOD) protein consists of:

• (A) Two Cu(II) and two Zn(II) ions
• (B) Three Cu(II) and two Zn(II) ions
• (C) One Cu(II) and three Zn(II) ions
• (D) Two Cu(II) and one Zn(II) ions

The correct answer is (A) Two Cu(II) and two Zn(II) ions.

Explanation:

Bovine Superoxide Dismutase (specifically SOD1) is a homodimer. This means it consists of two identical subunits. Each individual subunit contains one Copper (Cu²⁺) ion for catalytic activity and one Zinc (Zn²⁺) ion for structural stability. Therefore, the complete protein (the dimer) contains a total of two Cu(II) and two Zn(II) ions.