Journal article
Genome-wide studies of the multi-zinc finger Drosophila Suppressor of Hairy-wing protein in the ovary
Nucleic acids research, Vol.40(12), pp.5415-5431
07/2012
DOI: 10.1093/nar/gks225
PMCID: PMC3384341
PMID: 22406832
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.
Details
- Title: Subtitle
- Genome-wide studies of the multi-zinc finger Drosophila Suppressor of Hairy-wing protein in the ovary
- Creators
- Alexey A Soshnev - Interdisciplinary Program in Molecular and Cellular Biology, University of IowaBing He - Interdisciplinary Program in Molecular and Cellular Biology, University of IowaRyan M Baxley - Interdisciplinary Program in Molecular and Cellular Biology, University of IowaNan Jiang - Interdisciplinary Program in Molecular and Cellular Biology, University of IowaCraig M Hart - Interdisciplinary Program in Molecular and Cellular Biology, University of IowaKai Tan - Interdisciplinary Program in Molecular and Cellular Biology, University of IowaPamela K Geyer - Interdisciplinary Program in Molecular and Cellular Biology, University of Iowa
- Resource Type
- Journal article
- Publication Details
- Nucleic acids research, Vol.40(12), pp.5415-5431
- Publisher
- Oxford University Press
- DOI
- 10.1093/nar/gks225
- PMID
- 22406832
- PMCID
- PMC3384341
- ISSN
- 0305-1048
- eISSN
- 1362-4962
- Language
- English
- Date published
- 07/2012
- Academic Unit
- Obstetrics and Gynecology; Biochemistry and Molecular Biology
- Record Identifier
- 9984024550002771
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