Click here to close Hello! We notice that you are using Internet Explorer, which is not supported by Xenbase and may cause the site to display incorrectly. We suggest using a current version of Chrome, FireFox, or Safari.
XB-ART-38661
Structure 2008 Dec 10;1612:1892-901. doi: 10.1016/j.str.2008.10.005.
Show Gene links Show Anatomy links

Structural basis for DNA binding by replication initiator Mcm10.

Warren EM , Vaithiyalingam S , Haworth J , Greer B , Bielinsky AK , Chazin WJ , Eichman BF .


???displayArticle.abstract???
Mcm10 is an essential eukaryotic DNA replication protein required for assembly and progression of the replication fork. The highly conserved internal domain (Mcm10-ID) has been shown to physically interact with single-stranded (ss) DNA, DNA polymerase alpha, and proliferating cell nuclear antigen (PCNA). The crystal structure of Xenopus laevis Mcm10-ID presented here reveals a DNA binding architecture composed of an oligonucleotide/oligosaccharide-fold followed in tandem by a variant and highly basic zinc finger. NMR chemical shift perturbation and mutational studies of DNA binding activity in vitro reveal how Mcm10 uses this unique surface to engage ssDNA. Corresponding mutations in Saccharomyces cerevisiae result in increased sensitivity to replication stress, demonstrating the functional importance of DNA binding by this region of Mcm10 to replication. In addition, mapping Mcm10 mutations known to disrupt PCNA, polymerase alpha, and DNA interactions onto the crystal structure provides insight into how Mcm10 might coordinate protein and DNA binding within the replisome.

???displayArticle.pubmedLink??? 19081065
???displayArticle.pmcLink??? PMC2636851
???displayArticle.link??? Structure
???displayArticle.grants??? [+]

Species referenced: Xenopus laevis
Genes referenced: mcm10 pcna pola1

References [+] :
Allen, The SAD1/RAD53 protein kinase controls multiple checkpoints and DNA damage-induced transcription in yeast. 1994, Pubmed