Affordable Access

Publisher Website

The loss of histone H3 lysine 9 acetylation due to dSAGA-specific dAda2b mutation influences the expression of only a small subset of genes

Nucleic Acids Research
Oxford University Press
Publication Date
DOI: 10.1093/nar/gkp722
  • Gene Regulation
  • Chromatin And Epigenetics
  • Biology


In Drosophila, the dADA2b-containing dSAGA complex is involved in histone H3 lysine 9 and 14 acetylation. Curiously, although the lysine 9- and 14-acetylated histone H3 levels are drastically reduced in dAda2b mutants, these animals survive until a late developmental stage. To study the molecular consequences of the loss of histone H3 lysine 9 and 14 acetylation, we compared the total messenger ribonucleic acid (mRNA) profiles of wild type and dAda2b mutant animals at two developmental stages. Global gene expression profiling indicates that the loss of dSAGA-specific H3 lysine 9 and 14 acetylation results in the expression change (up- or down-regulation) of a rather small subset of genes and does not cause a general transcription de-regulation. Among the genes up-regulated in dAda2b mutants, particularly high numbers are those which play roles in antimicrobial defense mechanisms. Results of chromatin immunoprecipitation experiments indicate that in dAda2b mutants, the lysine 9-acetylated histone H3 levels are decreased both at dSAGA up- and down-regulated genes. In contrast to that, in the promoters of dSAGA-independent ribosomal protein genes a high level of histone H3K9ac is maintained in dAda2b mutants. Our data suggest that by acetylating H3 at lysine 9, dSAGA modifies Pol II accessibility to specific promoters differently.

There are no comments yet on this publication. Be the first to share your thoughts.


Seen <100 times

More articles like this

Acetylation of histone H2B mirrors that of H4 and...

on Journal of Biological Chemistr... Sep 19, 2003


on Acta Crystallographica Section... Jan 12, 2008

Obesity increases histone H3 lysine 9 and 18 acety...

on International journal of molec... December 2014

Male gametic cell-specific expression of H2A and H...

on Plant molecular biology February 1999
More articles like this..