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Which of the following statements is correct regarding S1 nuclease?

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Which of the following statements is correct regarding S1 nuclease?

(a) It acts on double stranded DNA

(b) It acts on single stranded DNA

(c) It acts on both types of strands

(d) It is obtained from E. coli

I have been asked this question during an interview for a job.

Origin of the question is Exonucleases topic in chapter Basics of Genetic Engineering of Genetic Engineering

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Right choice is (b) It acts on single stranded DNA

To explain: S1 nuclease is obtained from Aspergillus orzyae and it acts on single stranded DNA molecules. It is having exonucleolytic activity.

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