Magnesium ion shown bound to the apoenzyme is best classified as:
- A
An allosteric activator made of protein
- B
A substrate
- C
A competitive inhibitor
- Dcheck_circle
An inorganic cofactor required for enzyme activity
Explanation
Inorganic ions (e.g., Mg2+, Zn2+, Fe2+) that are required for enzyme catalysis are cofactors. Organic cofactors are called coenzymes (e.g., NAD+).