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  • 1
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    CHD1 motor protein is required for deposition of histone variant H3.3 into chromatin in vivo (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-08-25
    Description: The organization of chromatin affects all aspects of nuclear DNA metabolism in eukaryotes. H3.3 is an evolutionarily conserved histone variant and a key substrate for replication-independent chromatin assembly. Elimination of chromatin remodeling factor CHD1 in Drosophila embryos abolishes incorporation of H3.3 into the male pronucleus, renders the paternal genome unable to participate in zygotic mitoses, and leads to the development of haploid embryos. Furthermore, CHD1, but not ISWI, interacts with HIRA in cytoplasmic extracts. Our findings establish CHD1 as a major factor in replacement histone metabolism in the nucleus and reveal a critical role for CHD1 in the earliest developmental instances of genome-scale, replication-independent nucleosome assembly. Furthermore, our results point to the general requirement of adenosine triphosphate (ATP)-utilizing motor proteins for histone deposition in vivo.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3014568/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3014568/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Konev, Alexander Y -- Tribus, Martin -- Park, Sung Yeon -- Podhraski, Valerie -- Lim, Chin Yan -- Emelyanov, Alexander V -- Vershilova, Elena -- Pirrotta, Vincenzo -- Kadonaga, James T -- Lusser, Alexandra -- Fyodorov, Dmitry V -- GM58272/GM/NIGMS NIH HHS/ -- GM74233/GM/NIGMS NIH HHS/ -- R01 GM074233/GM/NIGMS NIH HHS/ -- Y 275/Austrian Science Fund FWF/Austria -- New York, N.Y. -- Science. 2007 Aug 24;317(5841):1087-90.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17717186" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphatases/metabolism ; Adenosine Triphosphate/metabolism ; Animals ; Cell Cycle Proteins/metabolism ; Chromatin/*metabolism ; *Chromatin Assembly and Disassembly ; DNA-Binding Proteins/genetics/*metabolism ; Drosophila/embryology/genetics/metabolism/*physiology ; Drosophila Proteins/genetics/*metabolism ; Embryo, Nonmammalian/physiology ; Embryonic Development ; Female ; Haploidy ; Histone Chaperones ; Histones/*metabolism ; Male ; Mutation ; Nucleosomes/metabolism ; Protamines/metabolism ; Spermatozoa/physiology ; Transcription Factors/genetics/*metabolism ; Transgenes
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    A Genetic Screen and Transcript Profiling Reveal a Shared Regulatory Program for Drosophila Linker Histone H1 and Chromatin Remodeler CHD1 (2015)
    Genetics Society of America (GSA)
    Details
    Publication Date: 2015-04-08
    Description: Chromatin structure and activity can be modified through ATP-dependent repositioning of nucleosomes and posttranslational modifications of core histone tails within nucleosome core particles and by deposition of linker histones into the oligonucleosome fiber. The linker histone H1 is essential in metazoans. It has a profound effect on organization of chromatin into higher-order structures and on recruitment of histone-modifying enzymes to chromatin. Here, we describe a genetic screen for modifiers of the lethal phenotype caused by depletion of H1 in Drosophila melanogaster . We identify 41 mis-expression alleles that enhance and 20 that suppress the effect of His1 depletion in vivo . Most of them are important for chromosome organization, transcriptional regulation, and cell signaling. Specifically, the reduced viability of H1-depleted animals is strongly suppressed by ubiquitous mis-expression of the ATP-dependent chromatin remodeling enzyme CHD1. Comparison of transcript profiles in H1-depleted and Chd1 null mutant larvae revealed that H1 and CHD1 have common transcriptional regulatory programs in vivo . H1 and CHD1 share roles in repression of numerous developmentally regulated and extracellular stimulus-responsive transcripts, including immunity-related and stress response-related genes. Thus, linker histone H1 participates in various regulatory programs in chromatin to alter gene expression.
    Electronic ISSN: 2160-1836
    Topics: Biology
    Published by Genetics Society of America (GSA)
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