Crystallization and preliminary crystallographic analysis of Bacillus thuringiensis AHL-lactonase

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Title
Crystallization and preliminary crystallographic analysis of Bacillus thuringiensis AHL-lactonase
Author(s)
Myung Hee Kim; Hye Ok Kang; B S Kang; K J Kim; W C Choi; Tae Kwang Oh; Choong Hwan Lee; Jung-Kee Lee
Bibliographic Citation
Biochimica et Biophysica Acta-Proteins and Proteomics, vol. 1750, no. 1, pp. 5-8
Publication Year
2005
Abstract
The quorum sensing (QS) systems in Gram-negative bacteria are mostly associated with diffusible N-acyl-l-homoserine lactones (AHLs). AHL-degrading enzymes hydrolyze the AHLs into inactive molecules, thereby blocking the QS systems that are closely linked to virulence factor production and biofilm formation. Consequently, these enzymes have recently attracted intense interest for the development of anti-infection therapies for plants and animals. However, despite significant progress in the investigation of AHL-degrading enzymes, no structure is yet available. Accordingly, this study reports on the expression and purification of the AHL-lactonase from Bacillus thuringiensis subsp. kurstaki HD263, as well as the successful crystallization of the enzyme. High-quality native crystals were obtained and a complete data set collected at 2.0 ? resolution. The native crystal was found to belong to the space group P212121, with unit cell parameters a = 52.7 ?, b = 55.9 ?, and c = 74.1 ? and one molecule in the asymmetric unit. MAD data were also collected at 2.4 ? resolution for a SeMet-substituted crystal.
Keyword
AHL-lactonaseCrystallizationN-acyl-L-homoserine lactoneQuorum sensing
ISSN
1570-9639
Publisher
Elsevier
DOI
http://dx.doi.org/10.1016/j.bbapap.2005.04.004
Type
Article
Appears in Collections:
Division of Biomedical Research > Microbiome Convergence Research Center > 1. Journal Articles
Division of Biomedical Research > Metabolic Regulation Research Center > 1. Journal Articles
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