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

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

The $2.13 Federal Subminimum Wage

and employment dynamics in contemporary labor markets. Current research topics include minimum wage impacts, tipped worker labor markets, transformation of retail labor markets, health insurance and health policy, immigration, worker turnover and job training, labor relations and productivity, and models of low-wage labor markets. About the Economic Policy Institute The Economic Policy Institute is a nonprofit, nonpartisan think tank that seeks to broaden the public debate about strategies to achieve a prosperous and fair economy. The Institute stresses real world analysis and a concern for the living standards of working people, and it makes its findings accessible to the general public, the media, and policy makers. EPI’s books, studies, and popular education materials address important economic issues, analyze pressing problems facing the U.S. economy, and propose new policies. EPI &amp