Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

0

A DNA polymerase ? accessory protein, Mcl1, is required for propagation of centromere structures in fission yeast


ABSTRACT: Specialized chromatin exists at centromeres and must be precisely transmitted during DNA replication. The mechanisms involved in the propagation of these structures remain elusive. Fission yeast centromeres are composed of two chromatin domains: the central CENP-ACnp1 kinetochore domain and flanking heterochromatin domains. Here we show that fission yeast Mcl1, a DNA polymerase ? (Pol?) accessory protein, is critical for maintenance of centromeric chromatin. In a screen for mutants that alleviate both central domain and outer repeat silencing, we isolated several cos mutants, of which cos1 is allelic to mcl1. The mcl1-101 mutation causes reduced CENP-ACnp1 in the central domain and an aberrant increase in histone acetylation in both domains. These phenotypes are also observed in a mutant of swi7+, which encodes a catalytic subunit of Pol?. Mcl1 forms S-phase-specific nuclear foci, which colocalize with those of PCNA and Pol?. These results suggest that Mcl1 and Pol? are required for propagation of centromere chromatin structures during DNA replication. Keywords: ChIP-chip analysis, S. pombe Antibodies used were ?-acetyl-histone H4 antiserum (Upstate) and ?-histone H4 pan antibody (Upstate). ChIP-on-chip was carried out using IVT amplification method. ChIP-chip data were comfirmed by real-time PCR.

ORGANISM(S): Schizosaccharomyces pombe

SUBMITTER: Katsuhiko Shirahige 

PROVIDER: E-GEOD-11102 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

altmetric image

Publications

A DNA polymerase alpha accessory protein, Mcl1, is required for propagation of centromere structures in fission yeast.

Natsume Toyoaki T   Tsutsui Yasuhiro Y   Sutani Takashi T   Dunleavy Elaine M EM   Pidoux Alison L AL   Iwasaki Hiroshi H   Shirahige Katsuhiko K   Allshire Robin C RC   Yamao Fumiaki F  

PloS one 20080521 5


Specialized chromatin exists at centromeres and must be precisely transmitted during DNA replication. The mechanisms involved in the propagation of these structures remain elusive. Fission yeast centromeres are composed of two chromatin domains: the central CENP-A(Cnp1) kinetochore domain and flanking heterochromatin domains. Here we show that fission yeast Mcl1, a DNA polymerase alpha (Pol alpha) accessory protein, is critical for maintenance of centromeric chromatin. In a screen for mutants th  ...[more]

Similar Datasets

2014-10-08 | E-GEOD-56700 | biostudies-arrayexpress
2010-05-14 | E-GEOD-13517 | biostudies-arrayexpress
2011-06-28 | E-GEOD-24960 | biostudies-arrayexpress
2013-11-15 | E-GEOD-50185 | biostudies-arrayexpress
2014-12-04 | E-GEOD-55184 | biostudies-arrayexpress
2016-03-11 | E-GEOD-68486 | biostudies-arrayexpress
2007-11-30 | E-GEOD-8450 | biostudies-arrayexpress
2014-03-17 | E-GEOD-51653 | biostudies-arrayexpress
2010-06-20 | E-GEOD-18570 | biostudies-arrayexpress
2013-11-13 | E-GEOD-46627 | biostudies-arrayexpress