Histone acetylation plays a key role in the regulation of eukaryotic gene expression. Recently, histone acetylation and deacetylation were found to be catalyzed by structurally distinct, multisubunit complexes that mediate, respectively, activation and repression of transcription. Here, we identify SAP30 as a novel component of the human histone deacetylase complex that includes Sin3, the histone deacetylases HDAC1 and HDAC2, histone binding proteins RbAp46 and RbAp48, as well as other polypeptides. Moreover, we describe a SAP30 homolog in yeast that is functionally related to Sin3 and the histone deacetylase Rpd3. The human SAP30 complex is active in deacetylating core histone octamers, but inactive in deacetylating nucleosomal histones due to the inability of the histone binding proteins RbAp46 and RbAp48 to gain access to nucleosomal histones. These results define SAP30 as a component of a histone deacetylase complex conserved among eukaryotic organisms.
This research output has an Altmetric Attention Score of 6. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 01 August 2026.
All research outputs
#6,086,972
of 27,778,980 outputs
Outputs from Molecular Cell
#4,420
of 8,026 outputs
Outputs of similar age
#6,161
of 37,731 outputs
Outputs of similar age from Molecular Cell
#9
of 37 outputs
Altmetric has tracked 27,778,980 research outputs across all sources so far. This one has received more attention than most of these and is in the 74th percentile.
So far Altmetric has tracked 8,026 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 19.7. This one is in the 40th percentile – i.e., 40% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 37,731 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 69% of its contemporaries.
We're also able to compare this research output to 37 others from the same source and published within six weeks on either side of this one. This one is in the 48th percentile – i.e., 48% of its contemporaries scored the same or lower than it.
