An ensemble of crystallographic models enables the description of novel bromate-oxoanion species trapped within a protein crystal

Jan Ondráček*, Jeroen R. Mesters

*Corresponding author for this work
3 Citations (Scopus)

Abstract

Only a few protein-oxoanion crystal complexes have been described to date. Here, the structure of a protein soaked in a bromate solution has been determined to a resolution of 1.25 Å and refined to final overall R/R free values of 18.04/21.3 (isotropic) and 11.25/14.67 (anisotropic). In contrast to the single-model approach, refinement of an ensemble of ten models enabled us to determine variances and statistically evaluate bond-length distances and angles in the oxoanions. In total, nine bromate positions, including two BrO3-·HBrO3 dimer species, have been identified on the basis of the anomalous signal of the Br atoms. For all bromate ions, the main-chain amide atoms of the protein were identified as the dominant binding positions, a useful property in any experimental phase-determination experiment.

Original languageEnglish
JournalActa Crystallographica Section D: Biological Crystallography
Volume62
Issue number9
Pages (from-to)996-1001
Number of pages6
ISSN0907-4449
DOIs
Publication statusPublished - 01.09.2006

Research Areas and Centers

  • Academic Focus: Center for Infection and Inflammation Research (ZIEL)

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