Figure 1 - full size

 

Figure 1.
Figure 1. Ribbon diagram of the M. tuberculosis pantothenate synthetase dimer. (A) A side view of the dimer structure showing that it resembles the shape of a butterfly. (B) An orthogonal view of (A) from top, with the twofold NCS symmetry axis (labeled with a dot) approximately perpendicular to the paper plane. Secondary structure elements for the subunit A (left) are labeled. Those for subunit B are identical except that the short helix 3' is not present. The figure was prepared from the coordinates of the intermediate complex (data set 5), with the program Molscript (Kraulis 1991) and Raster3D (Merritt and Murphy 1994). The molecule in the active site of each subunit, shown in ball-and-stick, is the reaction intermediate, pantoyl adenylate.

The above figure is reprinted by permission from the Protein Society: Protein Sci (2003, 12, 1097-1108) copyright 2003.