Quick Search:

uzh logo
Browse by:
bullet
bullet
bullet
bullet

Zurich Open Repository and Archive

Mossi, R; Keller, R C; Ferrari, E; Hübscher, U (2000). DNA polymerase switching: II. Replication factor C abrogates primer synthesis by DNA polymerase alpha at a critical length. Journal of Molecular Biology, 295(4):803-814.

Full text not available from this repository.

View at publisher

Abstract

A crucial event in DNA replication is the polymerase switch from the synthesis of a short RNA/DNA primer by DNA polymerase alpha/primase to the pro?cessive elongation by DNA polymerase delta. In order to shed light on the role of replication factor C (RF-C) in this process, the effects of RF-C on DNA polymerase alpha were investigated. We show that RF-C stalls DNA polymerase alpha after synthesis of approximately 30 nucleotides, while not inhibiting the polymerase activity per se. This suggested that RF-C and the length of the primer may be two important factors contributing to the polymerase switch. Furthermore the DNA binding properties of RF-C were tested. Band shift experiments indicated that RF-C has a preference for 5' recessed ends and double-stranded DNA over 3' ends. Finally PCNA can be loaded onto a DNA template carrying a RNA primer, suggesting that a DNA moiety is not necessarily required for the loading of the clamp. Thus we propose a model where RF-C, upon binding to the RNA/DNA primer, influences primer synthesis and sets the conditions for a polymerase switch after recruiting PCNA to DNA.

Citations

34 citations in Web of Science®
31 citations in Scopus®
Google Scholar™

Altmetrics

Additional indexing

Item Type:Journal Article, refereed
Communities & Collections:05 Vetsuisse Faculty > Institute of Veterinary Biochemistry and Molecular Biology
DDC:570 Life sciences; biology
Language:English
Date:28 January 2000
Deposited On:11 Feb 2008 12:18
Last Modified:27 Nov 2013 21:47
Publisher:Elsevier
ISSN:0022-2836
Publisher DOI:10.1006/jmbi.1999.3395
PubMed ID:10656792

Users (please log in): suggest update or correction for this item

Repository Staff Only: item control page