Question

Part of active site of enzyme which is involved in substrate holding is known as

• A. Turnover number
• B. Catalytic group
• C. Activation site
• D. Buttressing group

Answer 1

The correct option is D Buttressing group

Active site of an enzyme has three groups attractive groups, buttre­ssing groups and catalytic groups which helps in attachment of the substrate. Attractive and buttressing groups form a comple­mentary structure when the substrate approaches the enzyme and catalytic group comes in close proximity of the bond of the substrate to be broken. The catalytic site puts a strin on the enzyme substrate bond through electrophilic and nucleophile forces which leads to formation of product. So, the correct answer is option D.