Project description:In Drosophila melanogaster, two chromosome-specific targeting and regulatory systems have been described. The male-specific lethal (MSL) complex supports dosage compensation by stimulating gene expression from the male X-chromosome and the protein Painting of fourth (POF) specifically targets and stimulates expression from the heterochromatic 4th chromosome. The targeting sites of both systems are well characterized, but the principles underlying the targeting mechanisms have remained elusive. Here we present an original observation, namely that POF specifically targets two loci on the X-chromosome, PoX1 and PoX2 (POF-on-X). PoX1 and PoX2 are located close to the roX1 and roX2 genes, which encode ncRNAs important for the correct targeting and spreading of the MSL-complex. We also found that the targeting of POF to PoX1 and PoX2 is largely dependent on roX expression and identified a high-affinity target region which ectopically recruits POF. The results presented support a model linking the MSL-complex to POF and dosage compensation to regulation of heterochromatin.

2013-05-27 | GSE45402 | GEO

Project description:Pof mutant

| PRJNA138965 | ENA

Drosophila melanogaster

Project description:Gene expression analysis of spargel mutant versus genetically matched wildtype control

| PRJNA112211 | ENA

Transcription profiling of Drosophila melanogaster testis Pof D119 mutant expression analysis

Project description:To study the influence of POF on transcription in testis we made expression arrays from dissected testes (Pof mutants and wild type control). It is clear that POF mainly alters the expression of genes on the fourth chromosome Experiment Overall Design: Three replicates, each of 60 testes from 0-24h old males (Pof mutants and wild type control), were dissected and total RNA prepared

2009-04-04 | E-GEOD-14516 | biostudies-arrayexpress

Drosophila melanogaster

Project description:Chromatin IP of POF, HP1 and H3K9ac in S2 cells and salivary glands.

| PRJNA105439 | ENA