VOLUME 286 (2011) PAGES 1966–1975
Peter J. Stogios, Elena Evdokimova, and Alexei Savchenko are participants in the Center for Structural Genomics of Infectious Diseases (CSGID), not the Midwest Center for Structural Genomics (MCSG).
Discrepancies in the structure in Fig. 4 were identified by Ivan Shabalin from the group of Wladek Minor at the University of Virginia. The structure was re-refined to correct solvent ions, to modify the position of the backbone atoms of Phe-19, and to add alternate conformations to Glu-219 and Glu-273. The structure was deposited in the Protein Data Bank under code 3TYK, which rendered obsolete the previously presented structure under code 3OVC. New crystallographic statistics can be obtained at the Protein Data Bank. References in the text to ammonium ions and polyethylene glycol molecules should be removed, and Fig. 4 (A and C) should be updated to replace ammoniums with waters.
