Printer Friendly
Dictionary, Encyclopedia and Thesaurus - The Free Dictionary
3,907,008,936 visitors served.
forum Join the Word of the Day Mailing List For webmasters
?
Dictionary/
thesaurus
Medical
dictionary
Legal
dictionary
Financial
dictionary
Acronyms
 
Idioms
Encyclopedia
Wikipedia
encyclopedia
?

supercoiling
(redirected from DNA supercoil)

    Also found in: Medical, Wikipedia 0.01 sec.
supercoiling [′sü·pər‚kȯil·iŋ]
(cell and molecular biology)
Winding of the deoxyribonucleic acid duplex on itself so that it crosses its own axis; may be in the same (positive) direction as, or opposite (negative) direction to, the turns of the double helix.
Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content.
?Page tools
Printer friendly
Cite / link 		Feedback
Mentioned in?  References in periodicals archive?   Encyclopedia browser?   Full browser?
No references found
 
For DNA gyrase, this topoisomerization reaction results in introduction (or removal) of DNA supercoils, thus affecting the negative supercoiling of DNA necessary to initiate DNA replication and remove positive supercoils that accumulate before an advancing replication fork.
Emerging Mechanisms of Fluoroquinolone Resistance by Hooper, David C. / Emerging Infectious Diseases
In fact, the DNA supercoil is a carefully articulated knot that ties itself up according to rules governing its geometry and electrical forces acting on it from the liquid surroundings.
Salts add tightness to DNA supercoils by Lipkin, Richard / Science News
They suggest that the degree to which these DNA supercoils tighten and loosen influences which genes are active in a cell.
Rugby ball at the chromosome core by Science News
 
 
 
Encyclopedia
?

Terms of Use | Privacy policy | Feedback | Advertise with Us | Copyright © 2012 Farlex, Inc.
Disclaimer
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.