Linked Life Data

17916346

Source:http://linkedlifedata.com/resource/pubmed/id/17916346

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2007-10-23
pubmed:abstractText
DNA synthesis during S-phase and upon DNA repair is accompanied by chromatin assembly. The chromatin assembly factor CAF-1 has been biochemically well-characterized to deposit histones onto newly synthesized DNA. To gain insights into the in vivo functions of CAF-1 in Drosophila, we generated null mutants of the largest subunit of dCAF-1, dCAF-1-p180. We show that, unlike CAF-1 mutant yeast, dCAF-1-p180 mutant flies are hemizygous lethal. Removal of maternal dCAF-1-p180 activity by germline clones blocks oogenesis. Tissue-specific deletion of dCAF-1-p180 in the eye primordia disrupts eye development. In addition, reduction of dCAF-1-p180 activity suppresses gene silencing at heterochromatin and antagonizes Polycomb-mediated cell fate determination. Furthermore, heterozygous dCAF-1-p180 mutant flies display an increased sensitivity to gamma-irradiation and a reduced efficiency in recombinational double strand break (DSB) repair. Our experiments also show that human hCAF-1-p150 can rescue the dCAF-1-p180 mutant flies, demonstrating a functional conservation of eukaryotic CAF-1 activities in vivo. Together, our results establish that dCAF-1-p180 is an essential gene for Drosophila development and further underscore the importance of dCAF-1 in regulating gene expression and DNA repair in vivo.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
1095-564X
pubmed:author
pubmed:issnType
Electronic
pubmed:day
1
pubmed:volume
311
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
213-22
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
CAF-1 is essential for Drosophila development and involved in the maintenance of epigenetic memory.
pubmed:affiliation
National Laboratory of Biomacromolecules and State Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, The Chinese Academy of Sciences, Datun Road 15, Chaoyang District, Beijing 100101, China.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't