The benefit of DNA supercoiling during replication.

Abstract:

:DNA topology changes dynamically during DNA replication. Supercoiling, precatenation, catenation and knotting interplay throughout the process that is finely regulated by DNA topoisomerases. In the present article, we provide an overview of theoretical and experimental approaches to understand the interplay between various manifestations of topological constraints acting on replicating DNA molecules. Data discussed reveal that DNA entanglements (supercoils and catenanes) play an active role in preventing the formation of deleterious knots.

journal_name

Biochem Soc Trans

authors

Schvartzman JB,Martínez-Robles ML,Hernández P,Krimer DB

doi

10.1042/BST20120281

subject

Has Abstract

pub_date

2013-04-01 00:00:00

pages

646-51

issue

2

eissn

0300-5127

issn

1470-8752

pii

BST20120281

journal_volume

41

pub_type

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