Which of the following would be an example of a cofactor?
A)an enzyme active site that contains an α-helix
B)the nonprotein heme group in a hemoglobin molecule
C)the disulfide bridge that forms between cysteine residues
D)a β-pleated sheet hidden on the inside of a protein's tertiary structure

Question

Quizplus · Accepted Answer

A cofactor is a nonprotein molecule or ion that is required for the proper functioning of an enzyme. The nonprotein heme group in a hemoglobin molecule is an example of a cofactor as it is required for the proper oxygen binding and delivery by hemoglobin.

Which of the Following Would Be an Example of a Cofactor