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Type I topoisomerase protein bound to DNA

Type I topoisomerase protein bound to DNA

F007/9893

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Credit

ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY

Caption

Type I topoisomerase bound to DNA. Molecular model showing a type I topoisomerase molecule (blue) bound to a strand of DNA (deoxyribonucleic acid, yellow and red). The topoisomerase enzymes assist in uncoiling DNA. DNA is usually stored in a supercoiled form, which must be unravelled before it can be replicated or translated into proteins. Type I topoisomerase changes the linkage in multiples of one, while Type II changes the linkages in steps of two.

Release details

Model release not required. Property release not required.

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