obsolete Ada2/Gcn5/Ada3 transcription activator complex https://github.com/geneontology/go-ontology/issues/21335 true This term was obsoleted because it was incorrectly annotated. Consider ADA complex ; GO:0140671 or ATAC complex; GO:0140672. GO:0005671 GO:0002928 cellular_component ATAC complex OBSOLETE. A multiprotein complex that possesses histone acetyltransferase and is involved in regulation of transcription. Contains either GCN5 or PCAF in a mutually exclusive manner. The budding yeast complex includes Gcn5p, two proteins of the Ada family, and two TBP-associate proteins (TAFs); analogous complexes in other species have analogous compositions, and usually contain homologs of the yeast proteins. Both ATAC- or SAGA (see GO:0000124, SAGA complex) are involved in the acetylation of histone H3K9 and K14 residues. ADA complex ATAC complex