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. Author manuscript; available in PMC: 2012 Dec 1.
Published in final edited form as: Curr Opin Struct Biol. 2011 Oct 18;21(6):767–774. doi: 10.1016/j.sbi.2011.09.004

Figure 1. SAGA is a modular complex.

Figure 1

The 21 yeast SAGA proteins are arranged into four distinct modules: The HAT module (green) consists of Ada3, Ada2, Sgf29 and the histone acetyltransferase (HAT) Gcn5. The DUB module (red) consists of Sgf11, Sgf73, Sus1 and the deubiquitinating enzyme, Ubp8. The SPT module is shown in purple and the TAF module is shown in blue. The spatial positions of the SAGA proteins in this figure are derived from a model based on data from a recent mass spectrometric study [20].