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Which option is a wrong example of ligase?

Answer and explanation

Correct answer: Pepsin

Pepsin is a proteolytic enzyme that breaks proteins into smaller peptides in the stomach, so it is not a ligase. In contrast, T4 DNA ligase and E. coli DNA ligase join broken DNA ends by forming phosphodiester bonds. Exam tip: ligases join molecules or DNA fragments, whereas enzymes such as pepsin break down proteins.

Related tags

Ligase EnzymesDna LigasePepsinRestriction And LigationBiotechnology EnzymesPrinciples Of BiotechnologyBiotechnologyClass 11 Mcq

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