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topoisomerases

   Also found in: Medical, Wikipedia 0.01 sec.
topoisomerases [¦tä·pō·ī′säm·ə‚rās·əz]
(biochemistry)
Any of a group of enzymes capable of relaxing, unwinding, unpackaging, or changing the degree of supercoiling of deoxyribonucleic acid fiber.


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9780879698799 Untangling the double helix; DNA entanglement and the action of the DNA topoisomerases.
During transcription, enzymes called topoisomerases break a DNA strand and allow the DNA double-helix to uncoil, giving 2 DNA strands, 1 of which is the template for mRNA, called the DNA template.
 
 
 
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