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Drosophila melanogaster

ABSTRACT: Ectopically expressed MSL2 females compared with normal females

PROVIDER: PRJNA177512 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR590798.fastq.gz	Fastqsanger.gz
	SRR590799.fastq.gz	Fastqsanger.gz
	SRR590800.fastq.gz	Fastqsanger.gz
	SRR590801.fastq.gz	Fastqsanger.gz
	SRR590802.fastq.gz	Fastqsanger.gz

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Ectopically expressed MSL2 females compared with normal females

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Project description:Haploinsufficiency and aneuploidy are two phenomena, where alteration of gene dosage causes severe cellular defects ultimately resulting in developmental failures and disease. One remarkable exception is the X chromosome, where copy number differences between males and females are buffered through the action of dosage compensation systems. In Drosophila, the Male-Specific Lethal complex (MSLc) mediates two-fold upregulation of the single male X chromosome via Histone H4 lysine 16 acetylation (H4K16ac). The evolutionary origin and conservation of this process orchestrated by MSL2, the only male-specific protein within the fly MSLc, have remained unclear. Here, we report that MSL2, in addition to its function on the X, targets dosage-sensitive autosomal genes involved in patterning and morphogenesis. We show that the precise regulation of these genes by MSL2 is required for proper development of the fly wing. This set of dosage sensitive genes maintained such regulation during evolution, as MSL2 binds and similarly regulates mouse orthologues via deposition of H4K16ac. We propose that MSL2-mediated H4K16ac is an evolutionarily conserved process mediating gene-by-gene dosage compensation across flies and mammals.

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