Topoisomerase
Definition
Topoisomerase is an enzyme that alters the supercoiled form of a DNA molecule. It helps in unwinding the DNA helix by cutting one or both strands, allowing it to unwind and then resealing it.
Related terms
DNA Gyrase: This is a type of topoisomerase that introduces negative supercoils (or relaxes positive supercoils) into DNA.
Helicase: An enzyme that separates DNA strands before replication can occur.
Ligase: An enzyme that connects two fragments of DNA to make a single fragment; it's like the glue for our genetic material.
"Topoisomerase" appears in:
Study guides (1)
AP Biology - 6.2 Replication
Practice Questions (1)
Which of the following is the role of topoisomerase during DNA replication?
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Cram Mode
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© 2024 Fiveable Inc. All rights reserved.
AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.