Crystal Structures of Two Isozymes of Citrate Synthase from Sulfolobus tokodaii Strain 7

Figure 4

Overview of structures of homodimer of ST-CSs. The view is down a crystallographic 2-fold axis in the crystal of ST0587-CS, which relates the two subunits of the dimer. (a) Structure of ST1805-CS. Polypeptide chains A and B are colored in green and lime, respectively. (b) Structure of ST0587-CS. Each polypeptide is colored in cyan and purple, respectively. Polypeptide chains are shown with a ribbon model. (c) View of the dimer interface of ST1805-CS. (d) View of the monomer of ST0587-CS. Polypeptide chains are shown with a cylinder model.

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