Enzymes · NEET PG Preparation Biochemistry
Which of the following classes of enzymes according to the International Union of Biochemistry and Molecular Biology (IUBMB) is responsible for catal…
Practice question from Enzymes (NEET PG Preparation Biochemistry), with the correct answer and a step-by-step solution.
easy · MCQ · Q-6108E5
Which of the following classes of enzymes according to the International Union of Biochemistry and Molecular Biology (IUBMB) is responsible for catalyzing the joining of two molecules coupled with the hydrolysis of a nucleotide triphosphate?
- A.Transferases
- B.Hydrolases
- C.Lyases
- D.LigasesCorrect answer
Solution
Ligases (Class 6) catalyze the joining of two large molecules by the formation of new chemical bonds, coupled with the hydrolysis of a high-energy phosphate bond (like ATP). Transferases transfer groups, hydrolases cleave bonds by water addition, and lyases cleave bonds without hydrolysis or oxidation.
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