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. 2011 Jan 7;286(10):8448–8458. doi: 10.1074/jbc.M110.207126

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© 2011 by The American Society for Biochemistry and Molecular Biology, Inc.

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FIGURE 1. — Structure of the B. anthracis pXO1-118 sensor domain. A, ribbon representation of the dimer (side view), with termini and helices labeled (according to standard globin nomenclature). Helices are colored in spectral order (blue → orange) for each monomer. Labels for second monomer are primed. The KIAXER motif within helix F is colored red. Fatty acid is shown as cyan (methylene carbons) and red (carboxyl oxygens) spheres. B, same as in A, but orthogonal view looking down the 2-fold axis of the dimer. C, same view as in A, highlighting the dimer interface, with water molecules found only in a central region. D, sequence alignments of pXO1-118, pXO2-61, and the sensor domain of the B. anthracis sporulation kinase, BA2291. Secondary structure elements for pXO1-118 are indicated, as is the KIAXER motif.