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DNA negative supercoiling activity  
Catalytic introduction of negative supercoils into a DNA molecule or region thereof. In bacteria, negative supercoils are only introduced by DNA gyrase, a type II topoisomerase, but not all DNA gyrases are capable of introducing supercoils. In bacteria, the level of supercoiling varies widely between species and has been characterized properly in only a handful of organisms. The best characterized enzyme, from E.coli, is exceptionally proficient at supercoiling and this ability is not representative of all bacteria.

Synonyms
Related Synonyms: DNA gyrase activity
Definition Sources: GOC:bhm, GOC:krc, GOC:mah, WikiPedia:DNA_gyrase

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