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The value of linking number for a closed circular DNA molecule of 2000 bp, when DNA is underwound by 20 enzymatic turnovers by DNA gysase (+ ATP) _____________ [Answer in Integer]
Assumption: There are 10 base pairs/ turn in relaxed DNA
    Correct answer is '160'. Can you explain this answer?
    Verified Answer
    The value of linking number for a closed circular DNA molecule of 2000...
    When DNA is relaxed

    DNA gyrase underwinds the DNA by 2 turns in each cycle
    So. it would underwind the DNA by 2 x 20 = 40 nuns in 20 cycles
    Hence, the new linking number would be Lk = Lk0 - 40 = 160
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    The value of linking number for a closed circular DNA molecule of 2000...
    When DNA is relaxed

    DNA gyrase underwinds the DNA by 2 turns in each cycle
    So. it would underwind the DNA by 2 x 20 = 40 nuns in 20 cycles
    Hence, the new linking number would be Lk = Lk0 - 40 = 160
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    The value of linking number for a closed circular DNA molecule of 2000 bp, when DNA is underwound by 20 enzymatic turnovers by DNA gysase (+ ATP) _____________ [Answer in Integer]Assumption:There are 10 base pairs/ turn in relaxed DNACorrect answer is '160'. Can you explain this answer?
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