INTRODUCTION

The protein of part of the enzyme on its own is not always adequate to bring about the catalytic activity. Many enzymes require certain non-protein small additional factors, collectively referred to as cofactors for catalysis. Coenzymes are second substrates and are often regarded as co-substrates. Coenzymes undergo alterations during the enzymatic reactions, which are layer regenerated. This is in contrast to the substrate, which is converted to the product.