The yeast SAGA complex is a multifunctional coactivator that regulates transcription by RNA polymerase II [1,2]. It is formed of five major modular subunits and shows a high degree of structural conservation to human TFTC and STAGA [3]. The complex can also be conceived of as consisting of two histone-fold-containing core subunits, and this family is one of these. As a family it is likely to carry binding regions for interactions with a number of the other components of the complex.

1: NET1 and HFI1 genes of yeast mediate both chromosome maintenance and mitochondrial rho(-) mutagenesis. Koltovaya NA, Guerasimova AS, Tchekhouta IA, Devin AB; Yeast. 2003;20:955-971. PMID:12898711

2: Molecular architecture of the S. cerevisiae SAGA complex. Wu PY, Ruhlmann C, Winston F, Schultz P; Mol Cell. 2004;15:199-208. PMID:15260971

3: Human STAGA complex is a chromatin-acetylating transcription coactivator that interacts with pre-mRNA splicing and DNA damage-binding factors in vivo. Martinez E, Palhan VB, Tjernberg A, Lymar ES, Gamper AM, Kundu TK, Chait BT, Roeder RG; Mol Cell Biol. 2001;21:6782-6795. PMID:11564863

4: The SAGA continues: expanding the cellular role of a transcriptional co-activator complex. Baker SP, Grant PA; Oncogene. 2007;26:5329-5340. PMID:17694076