Project description:The major H4K16 acetylase MOF has been found in two complexes, the Male-Specific Lethal (MSL) and the Non-Specific Lethal (NSL) complex. The latter one consists of at least 7 members: NSL1, NSL2, NSL3, MBD-R2, MCRS2, WDS, and MOF. To investigate it's function, we performed genome-wide profiling of NSL3 and MBD-R2 in S2 cells. In addition, we obtained ChIP-Seq profiles for NSL1 and MCRS2 from 3rd instar larvae salivary glands that can be accessed via the accession number E-MTAB-214. This submission is also related to E-MTAB-1084.
Project description:Two chromosome-targeting and gene regulatory systems are present in Drosophila melanogaster. The male X-chromosome is targeted by the male-specific lethal complex believed to mediate the two-fold up-regulation of the X-linked genes. The highly heterochromatic 4th chromosome is specifically targeted by the Painting of Fourth (POF) protein which together with heterochromatin protein 1 (HP1) modulate the expression level of genes on the 4th chromosome. Here we report high-resolution mapping of POF and HP1 on the 4th chromosome using chromatin immunoprecipitation followed by tiling microarrays (ChIP-chip) in S2 cells and salivary glands. The enrichments are compared to transcript profiles of the two cell types used. POF specifically binds to genes with a strong preference for exons. The POF binding profile correlates to the binding profile of HP1 which in addition displays a typical M-bM-^@M-^\peakM-bM-^@M-^] in the promoter regions of bound genes. POF and HP1 binds to active genes and the binding correlates with levels of transcription and changes in binding levels are paralleled by a comparable change in transcription. Our results provide a high resolution description of the chromosome 4 specific gene regulatory system provided by the combinatorial effects of POF and HP1. This SuperSeries is composed of the following subset Series: GSE8296: Chromatin IP of POF, HP1 and H3K9ac in S2 cells and salivary glands. GSE8297: Transcript profiling in S2 cells and salivary glands. Keywords: SuperSeries Refer to individual Series
