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Holoenzyme is the complete enzyme consisting of an apoenzyme and a co-factor. Select the option that correctly identifies the nature of apoenzyme and co-factor.
- a)Apoenzyme - Protein
Co - factor - Non-Protein - b)Apoenzyme - Non - Protein
Co - factor - Protein - c)Apoenzyme - Protein
Co - factor - Protein - d)None of the above
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Holoenzyme is the complete enzyme consisting of an apoenzyme and a co-...
Enzyme may be broadly classified into two types depending on their chemical composition-simple enzymes and conjugated enzymes are wholly made up of proteins and any additional substance or group is absent, e.g., pepsin, trypsin, etc. Conjugated enzymes (or holoenzymes) are formed of two parts -a protein part called apoenzyme and a non-protein part named co-factor. The complete conjugated enzyme consisting of an apoenzyme and a co-factor is called holoenzyme. Holoenzyme is the functional unit of enzyme.
Co-factor may be inorgainc or roganic in nature. Catalytic activity is lost when co-factor is removed from the enzyme which indicates that it plays a crucial role in catalytic activity of enzymes.
Co-factor may be inorgainc or roganic in nature. Catalytic activity is lost when co-factor is removed from the enzyme which indicates that it plays a crucial role in catalytic activity of enzymes.
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Holoenzyme is the complete enzyme consisting of an apoenzyme and a co-...
Explanation:
Holoenzyme is the active form of an enzyme that consists of two main components: the apoenzyme and the co-factor.
Apoenzyme:
The apoenzyme is the protein component of the holoenzyme. It is the inactive form of the enzyme and lacks the necessary co-factor to catalyze a specific reaction. The apoenzyme alone cannot perform its enzymatic function. It requires the presence of a co-factor to become active. Apoenzymes are typically made up of amino acids and have a specific three-dimensional shape that allows them to bind to the co-factor.
Co-factor:
The co-factor is a non-protein component that is required by some enzymes to catalyze a reaction. It can be either an inorganic ion or an organic molecule. The co-factor interacts with the active site of the apoenzyme and helps in the catalytic process. Co-factors can be loosely or tightly bound to the apoenzyme and can be classified into two types: coenzymes and prosthetic groups.
Coenzymes are organic molecules that are derived from vitamins. They are often involved in carrying or transferring chemical groups between enzymes. Examples of coenzymes include NAD+, FAD, and coenzyme A.
Prosthetic groups are non-protein molecules that are tightly bound to the apoenzyme. They are essential for the enzyme's catalytic activity. Examples of prosthetic groups include heme in hemoglobin and biotin in the enzyme pyruvate carboxylase.
Correct answer:
The correct answer is option 'A' because the apoenzyme is a protein, which is indicated by the term "apo-", and the co-factor is a non-protein molecule. This is consistent with the general understanding of holoenzymes and their components.
Holoenzyme is the active form of an enzyme that consists of two main components: the apoenzyme and the co-factor.
Apoenzyme:
The apoenzyme is the protein component of the holoenzyme. It is the inactive form of the enzyme and lacks the necessary co-factor to catalyze a specific reaction. The apoenzyme alone cannot perform its enzymatic function. It requires the presence of a co-factor to become active. Apoenzymes are typically made up of amino acids and have a specific three-dimensional shape that allows them to bind to the co-factor.
Co-factor:
The co-factor is a non-protein component that is required by some enzymes to catalyze a reaction. It can be either an inorganic ion or an organic molecule. The co-factor interacts with the active site of the apoenzyme and helps in the catalytic process. Co-factors can be loosely or tightly bound to the apoenzyme and can be classified into two types: coenzymes and prosthetic groups.
Coenzymes are organic molecules that are derived from vitamins. They are often involved in carrying or transferring chemical groups between enzymes. Examples of coenzymes include NAD+, FAD, and coenzyme A.
Prosthetic groups are non-protein molecules that are tightly bound to the apoenzyme. They are essential for the enzyme's catalytic activity. Examples of prosthetic groups include heme in hemoglobin and biotin in the enzyme pyruvate carboxylase.
Correct answer:
The correct answer is option 'A' because the apoenzyme is a protein, which is indicated by the term "apo-", and the co-factor is a non-protein molecule. This is consistent with the general understanding of holoenzymes and their components.
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