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Reference Report
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| Citation | Corona, D.F., Clapier, C.R., Becker, P.B., Tamkun, J.W. (2002). Modulation of ISWI function by site-specific histone acetylation. EMBO Rep. 3(3): 242--247. (Export to RIS) | ||
| FlyBase ID | FBrf0144854 | ||
| Publication Type | Research paper | ||
| PubMed ID | 11882543 | ||
| PubMed Abstract | Mutations in Drosophila ISWI, a member of the SWI2/SNF2 family of chromatin remodeling ATPases, alter the global architecture of the male X chromosome. The transcription of genes on this chromosome is increased 2-fold relative to females due to dosage compensation, a process involving the acetylation of histone H4 at lysine 16 (H4K16). Here we show that blocking H4K16 acetylation suppresses the X chromosome defects resulting from loss of ISWI function in males. In contrast, the forced acetylation of H4K16 in ISWI mutant females causes X chromosome defects indistinguishable from those seen in ISWI mutant males. Increased expression of MOF, the histone acetyltransferase that acetylates H4K16, strongly enhances phenotypes resulting from the partial loss of ISWI function. Peptide competition assays revealed that H4K16 acetylation reduces the ability of ISWI to interact productively with its substrate. These findings suggest that H4K16 acetylation directly counteracts chromatin compaction mediated by the ISWI ATPase. | ||
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| Language of Publication | English | ||
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| Publication Type | Journal | ||
| Abbreviation | EMBO Rep. | ||
| Title | EMBO Reports | ||
| Publication Year | 2000- | ||
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Data from Reference
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| Alleles (6)
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| Constructs (4)
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| Genes (7)
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