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. Author manuscript; available in PMC: 2015 Mar 16.
Published in final edited form as: Nat Commun. 2014;5:3110. doi: 10.1038/ncomms4110

Figure 3. Conformational changes in the loop/helix region between different electron transfer states.

Figure 3

a, Zoomed views of the Cys56Ala (left), Cys212Ala (middle) and Cys50Ala (right) structures. Conformational changes are observed in the electron-transfer loop and horizontal helix. b, Left, Electron density map (contoured at 1σ) of Cys56Ala horizontal helix. The Cys56Ala structure (gold) is superimposed with Cys50Ala structure (grey). The difference becomes evident towards the N-terminus of the horizontal helix: from Leu58 to Cys56 (residues of the Cys50Ala construct labeled in parenthesis). Right, Electron density map (contoured at 1σ) of Cys50Ala horizontal helix (grey).