Question

Which fat-soluble vitamin appears to operate as a coenzyme that modifies proteins to bind with calcium?

Answer 1

Among the fat soluble vitamins namely the vitamins A, D, E and K the best answer to the question would be the vitamin K. It is a fat soluble vitamin appearing as co enzyme that do modify the proteins in order to bind with calcium.

Answer 2

Answer: Vitamin K

Coenzymes are small, nonproteinaceous molecules that work with an enzyme to initiate the function of an enzyme. They cannot function on their own and require the presence of an enzyme.  An example is vitamin K, a fat-soluble vitamin that modifies protein to bind with calcium.