Question

what is the functional unit of an enzyme?
a) Apoenzyme
b) Holoenzyme
c) Cofactor
d) non of these ​

Answer 1

Answer:

The functional unit of enzymes is called 'Holoenzyme'. This is made up of 'apoenzyme' which is a protein part and a non protein part called prosthetic group. The prosthetic group which is covalently attached with the enzyme is known as cofactor.

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Answer 2

Answer:

• The term "holoenzyme" refers to an enzyme's functional component. It frequently consists of a protein component, the apoenzyme, and a non-protein component, the coenzyme.

Explanation:

• A holoenzyme is a fully developed, capable enzyme that is catalytically active. A holoenzyme is made up of an apoenzyme and its cofactors. Each subunit necessary for an enzyme to function, such as DNA polymerase III and RNA polymerase, is contained in a holoenzyme.

• Holoenzyme = Cofactor + Apoenzyme

• Another name for holoenzyme is a conjugate enzyme. The apoenzyme, which is the protein component of the enzyme, is inactive without cofactors.
• The holoenzyme's non-protein component, which is necessary for its action, is known as a cofactor. Metal ions $(Mg2+, Fe3+, Zn2+)$ or organic compounds known as coenzymes can serve as cofactors.

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