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. 2014 Jun 29;70(Pt 7):1922–1933. doi: 10.1107/S1399004714009419

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© Asojo et al. 2014

This is an open-access article distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.

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Comparison of C. difficile and E. coli Alr. (a) Superposed ribbon diagram of CdAlr_K271T (gray) with EcAlr (cyan). The larger hinge angle of EcAlr is obvious from the displacement of the corresponding loops in the C-terminal domain, indicated by arrows. The N-terminal residue (Lys3) and C-terminal (Lys385) residue of the CdAlr_K271T structure are labeled. Also labeled are the N-terminal (Met1) and C-terminal (Asp359) residues of the EcAlr structure. (b) A stereoview of the superposed active sites of CdAlr_K271T (gray) and EcAlr (green). (c) A stereoview of the superposed residues in the active site of CdAlr_cycloserine (gray) and EcAlr in complex with cycloserine (green).