Reference Report

Reference
Citation	Grau, B., Popescu, C., Torroja, L., Ortuño-Sahagún, D., Boros, I., Ferrús, A. (2008). Transcriptional adaptor ADA3 of Drosophila melanogaster is required for histone modification, position effect variegation, and transcription. Mol. Cell. Biol. 28(1): 376--385. (Export to RIS)
FlyBase ID	FBrf0203033
Publication Type	Research paper
PubMed ID	17967867
PubMed Abstract	The Drosophila melanogaster gene diskette (also known as dik or dAda3) encodes a protein 29% identical to human ADA3, a subunit of GCN5-containing histone acetyltransferase (HAT) complexes. The fly dADA3 is a major contributor to oogenesis, and it is also required for somatic cell viability. dADA3 localizes to chromosomes, and it is significantly reduced in dGcn5 and dAda2a, but not in dAda2b, mutant backgrounds. In dAda3 mutants, acetylation at histone H3 K9 and K14, but not K18, and at histone H4 K12, but not K5, K8, and K16, is significantly reduced. Also, phosphorylation at H3 S10 is reduced in dAda3 and dGcn5 mutants. Variegation for white (w(m4)) and scute (Hw(v)) genes, caused by rearrangements of X chromosome heterochromatin, is modified in a dAda3(+) gene-dosage-dependent manner. The effect is not observed with rearrangements involving Y heterochromatin (bw(D)), euchromatin (Scutoid), or transvection effects on chromosomal pairing (white and zeste interaction). Activity of scute gene enhancers, targets for Iroquoi transcription factors, is abolished in dAda3 mutants. Also, Iroquoi-associated phenotypes are sensitive to dAda3(+) gene dosage. We conclude that dADA3 plays a role in HAT complexes which acetylate H3 and H4 at specific residues. In turn, this acetylation results in chromatin structure effects of certain rearrangements and transcription of specific genes.
DOI	10.1128/MCB.01307-07
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Language of Publication	English
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Publication Type	Journal
Abbreviation	Mol. Cell. Biol.
Title	Molecular and Cellular Biology
Publication Year	1981-
ISBN/ISSN	0270-7306
Data from Reference
Aberrations (6)
	Df(3L)iro-2 Df(3L)iro-DFM1 Df(3L)iro-DFM3 Dp(1;3)JC153 In(1)sc⁸ In(1)w^m4h
Alleles (17)
	Ada2a^d189 Ada2b^d842 amos^Tft Antp^Hu ara^Scer\UAS.cGa dik¹ dik² dik³ dik^+tE4RX dik^Δ6 dik^Δ9 Ecol\lacZ^ac.AS1.4DC Ecol\lacZ^sc.1.1 Ecol\lacZ^sc.3.7+1.2 Gcn5^E333st Scer\GAL4^salm-AC216 Scer\GAL4^ush-MD751
Constructs (6)
	P{1.1sc-lacZ} P{ac/sc+1.2} P{ac-lacZ.AS1.4DC} P{dik^+tE4RX} P{GAL4} P{UAS-ara.G}
Genes (13)
	Ada2a Ada2b amos Antp ara caup dik Ecol\lacZ Gcn5 His3 mirr sc Scer\GAL4
Insertions (3)
	P{GAL4}salm^AC216 P{GawB}ush^MD751 P{Mae-UAS.6.11}CG7536^GG01344
Natural transposons (1)
	P-element