Stereoview of the structural superposition of IspH protein from E

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Presentation transcript:

Stereoview of the structural superposition of IspH protein from E Stereoview of the structural superposition of IspH protein from E. coli (Green) and A. aeolicus (Gray) comparing closed (E. coli) and open (A. aeolicus) conformations. Stereoview of the structural superposition of IspH protein from E. coli (Green) and A. aeolicus (Gray) comparing closed (E. coli) and open (A. aeolicus) conformations. Structural superposition was performed with a matching rate of 78% of Cα-atoms of the domains D2 with an rms deviation of 1.4 Å. (A) Overview of the orientation of the domains D1, D2, and D3; red arrows point to the hinge motive allowing the induced-fit of domain D3 upon substrate binding. (B) Close-up view and hydrogen-bonding network at the active site (black dashed lines, only drawn for HMBPP bound to IspH). Note, that amino acids involved in the hydrogen bond network are conserved over species and occupy identical locations within the crystal structures of open and closed conformation of E. coli and A. aeolicus. Tobias Gräwert et al. PNAS 2010;107:3:1077-1081 ©2010 by National Academy of Sciences