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. Author manuscript; available in PMC: 2015 Apr 9.
Published in final edited form as: Chem Rev. 2014 Jan 28;114(7):3963–4038. doi: 10.1021/cr400443z

Figure 10.

Figure 10

The structure of the A. fulgidus molybdate transporter (PDB 2ONK). Left, the overall structure of the ModAB2C2 heteropentamer, with ModA in blue, ModB in gray, and ModC in red; the two subunits of ModB and ModC are indicated in dark and light shading. Right, the molybdate binding site of ModA, as seen from the face that interacts with the ModB2 dimer. The anion binding site consists of Asp 153 and Glu 218, both bound in a bidentate fashion, plus Tyr 236 and Ser 42 that hydrogen bond to the bound anion (in the case of the crystal structure tungstate, rather than molybdate, from the crystallization mother liquor).