In bacteria the amount and type of super coiking of dna is brought by enzyme
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DNA gyrase is an essential bacterial enzyme that catalyzes the ATP-dependent negative super-coiling of double-stranded closed-circular DNA. Gyrase belongs to a class of enzymes known as topoisomerases that are involved in the control of topological transitions of DNA.
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➡️ Negative supercoiling is the left-handed coiling of DNA thus winding occurs in the counterclockwise direction. It is also known as the "underwinding" of DNA. Topoisomerases unwind helix to do DNA transcription and DNA replication.
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