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Nucleic Acids Research
Article . 2012 . Peer-reviewed
License: CC BY NC
Data sources: Crossref
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Nucleic Acids Research
Article
License: CC BY NC
Data sources: UnpayWall
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PubMed Central
Other literature type . 2012
License: CC BY NC
Data sources: PubMed Central
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Genome-wide studies of the multi-zinc finger Drosophila Suppressor of Hairy-wing protein in the ovary

Authors: Soshnev, Alexey A.; He, Bing; Baxley, Ryan M.; Jiang, Nan; Hart, Craig M.; Tan, Kai; Geyer, Pamela K.;

Genome-wide studies of the multi-zinc finger Drosophila Suppressor of Hairy-wing protein in the ovary

Abstract

The Drosophila Suppressor of Hairy-wing [Su(Hw)] protein is a globally expressed, multi-zinc finger (ZnF) DNA-binding protein. Su(Hw) forms a classic insulator when bound to the gypsy retrotransposon and is essential for female germline development. These functions are genetically separable, as exemplified by Su(Hw)(f) that carries a defective ZnF10, causing a loss of insulator but not germline function. Here, we completed the first genome-wide analysis of Su(Hw)-binding sites (SBSs) in the ovary, showing that tissue-specific binding is not responsible for the restricted developmental requirements for Su(Hw). Mapping of ovary Su(Hw)(f) SBSs revealed that female fertility requires binding to only one third of the wild-type sites. We demonstrate that Su(Hw)(f) retention correlates with binding site affinity and partnership with Modifier of (mdg4) 67.2 protein. Finally, we identify clusters of co-regulated ovary genes flanked by Su(Hw)(f) bound sites and show that loss of Su(Hw) has limited effects on transcription of these genes. These data imply that the fertility function of Su(Hw) may not depend upon the demarcation of transcriptional domains. Our studies establish a framework for understanding the germline Su(Hw) function and provide insights into how chromatin occupancy is achieved by multi-ZnF proteins, the most common transcription factor class in metazoans.

Keywords

Binding Sites, Genome, Insect, Ovary, Nuclear Proteins, Zinc Fingers, Gene Regulation, Chromatin and Epigenetics, Repressor Proteins, Oogenesis, Gene Expression Regulation, Mutation, Animals, Drosophila Proteins, Drosophila, Female, Microtubule-Associated Proteins

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
50
Top 10%
Top 10%
Top 10%
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gold