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- W1946149014 abstract "Abstract The Drosophila MSL complex consists of at least six proteins and two noncoding roX RNAs that mediate dosage compensation. It acts to remodel the male's X chromatin by covalently modifying the amino terminal tails of histones. The roX1 and roX2 genes are thought to be nucleation sites for assembly and spreading of MSL complexes into surrounding chromatin where they roughly double the rates of transcription. We generated many transgenic stocks in which the roX1 gene was moved from its normal location on the X to new autosomal sites. Approximately 10% of such lines displayed unusual sexually dimorphic expression patterns of the transgene's mini-white eye-color marker. Males often displayed striking mosaic pigmentation patterns similar to those seen in position-effect variegation and yet most inserts were in euchromatic locations. In many of these stocks, female mini-white expression was very low or absent. The male-specific activation of mini-white depended upon the MSL complex. We propose that these transgenes are inserted in several different types of repressive chromatin environments that inhibit mini-white expression. Males are able to overcome this silencing through the action of the MSL complex spreading from the roX1 gene and remodeling the local chromatin to allow transcription. The potency with which an ectopic MSL complex overcomes silent chromatin suggests that its normal action on the X must be under strict regulation." @default.
- W1946149014 created "2016-06-24" @default.
- W1946149014 creator A5005457969 @default.
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- W1946149014 date "2003-06-01" @default.
- W1946149014 modified "2023-09-27" @default.
- W1946149014 title "The Drosophila <i>roX1</i> RNA Gene Can Overcome Silent Chromatin by Recruiting the Male-Specific Lethal Dosage Compensation Complex" @default.
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- W1946149014 doi "https://doi.org/10.1093/genetics/164.2.565" @default.
- W1946149014 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/1462573" @default.
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