1st year MBBS- (Continuation from last class)
1.Write short note on: a) Coenzyme b) Cofactor c) Isoenzyme(Isozyme) Answer: Coenzyme A coenzyme is a substance that works with an enzyme to initiate or aid the function of the enzyme. It can be considered a helper molecule for a biochemical reaction. Coenzymes are small, nonproteinaceous molecules that provide a transfer site for a functioning enzyme. They are intermediate carriers of an atom or group of atoms, allowing a reaction to occur. Coenzymes are nonprotein organic molecules that bind loosely to an enzyme. Many (not all) are vitamins or are derived from vitamins. Many coenzymes contain adenosine monophosphate (AMP). Coenzymes maybe described as either cosubstrates or prosthetic groups. Cofactors are inorganic species or at least nonprotein compounds that aid enzyme function by increasing the rate of catalysis. Typically, cofactors are metal ions. Some metallic elements have no nutritional value , bu...