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The enzyme of E.coli is a nuclease that initiates the repair of double stranded DNA breaks by homologous recombination is?

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The enzyme of E.coli is a nuclease that initiates the repair of double stranded DNA breaks by homologous recombination is?

(a) DNA glycosylase

(b) DNA ligase

(c) DNA polymerase

(d) RNA polymerase

This question was posed to me in a national level competition.

This key question is from Tough Questions and Answers topic in chapter Regulation of Gene Expression and Miscellaneous of Biochemistry

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Best answer
The correct choice is (a) DNA glycosylase

Best explanation: DNA glycosylase catalyzes the first step of base excision repair in DNA.

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