Question

Carbonic anhydrase is the best-known example of
a) Hydrolase
b) Transferase
c) Lyase
d) Coagulative

Answer 1

Hint: The enzyme carbonic anhydrase is found in the red blood cells. It is used to catalyze a reaction and is used for the conversion of carbon dioxide and water into the carbonic acid which then dissociates into protons and the bicarbonate ions.

Complete answer:
Lyase is the enzymes which help in the breakdown reactions without the help of hydrolysis. Carbonic anhydrase is an example of lyase which also helps in the breakdown reaction without hydrolysis. Carbonic anhydrase is an enzyme that helps in the conversion of the carbon dioxide and water into carbonic acid without the aid of hydrolysis. It also converts the protons into the bicarbonate ions. This reaction is the reversible reaction. It is a zinc-containing enzyme and is of EC 4.2. 1.1 type of lyase enzyme. This enzyme is also used for the treatment of glaucoma. It is used in drugs like acetazolamide, methazolamide, and dichlorphenamide. Carbonic anhydrase is found in the red blood cells of the human body. If there is an absence of carbonic anhydrase in the body then it leads to the no absorption of carbon dioxide by the tissues as there would be no formation of the carbonic acid which is taken in by the tissues from the blood.

So, the answer is ‘lyase’.

Note: Lyase is the enzyme that is used to catalyze the reactions without the help of the hydrolysis reactions. There are many types of the lyase present which are involved in a different type of reaction. Carbonic anhydrase is the lyase of EC 4.2 type.