Yes, potassium is a cofactor.
Potassium as a Cofactor
Potassium ions (K+) act as activators and play a specific role as cofactors. Here's a breakdown:
- Specific Enzyme: Potassium functions as a cofactor for the enzyme pyruvate kinase.
- Metabolic Pathway: This enzyme is critical in the glycolysis pathway, a central process in energy production.
- Nature of Interaction: Importantly, potassium does not form permanent bonds with the enzyme. It is involved in the activation process, facilitating the enzyme's function without becoming permanently attached.
Therefore, while potassium might not be a permanently bound cofactor, it absolutely fulfills the role of a cofactor in activating pyruvate kinase.
