Use of site-directed mutagenesis to probe structure-function relationships of alpha-toxin from Clostridium perfringens.
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X-ray diffraction is used to study the binding of xenon and krypton to a variety of crystallised proteins: porcine pancreatic elastase; subtilisin Carlsberg from Bacillus licheniformis; cutinase from Fusarium solani; collagenase from Hypoderma lineatum; he ...
This paper presents a survey of developments in de novo phasing methods and instrumentation in protein crystallography that have been carried out over the past 20 years at the French synchrotron radiation facility LURE. This includes progress in detector t ...
Chloroethenes, and most particularly tetra- (PCE) and trichloroethene (TCE) are major groundwater pollutants due to their extensive industrial use as solvents since the 1920s. The strong electronegativity of the chlorines renders them very stable under aer ...
Novel genes that are regulated in Clostridium perfringens by the two-component regulatory system, VirR/VirS, were identified using a differential display method. A plasmid library was constructed from C. perfringens chromosomal DNA, and the plasmids were h ...
Mammalian Cdc25 phosphatase is responsible for the dephosphorylation of Cdc2 and other cyclin-dependent kinases at Thr14 and Tyr15, thus activating the kinase and allowing cell cycle progression. The catalytic domain of this dual-specificity phosphatase ha ...
The past five years have led to a tremendous increase in our molecular understanding of the mode of action of the anthrax toxin, one of the two main virulence factors produced by Bacillus anthracis. The structures of each of the three components of the tox ...
Clostridium perfringens phospholipase C (PLC), also called alpha-toxin, is the major virulence factor in the pathogenesis of gas gangrene. The toxic activities of genetically engineered alpha-toxin variants harboring single amino-acid substitutions in thre ...
The pore-forming alpha-toxin from Staphylococcus aureus is secreted as a soluble monomeric protein. In order to form a transmembrane channel, the protein has to undergo oligomerization and membrane insertion. Previous studies have shown that channel format ...
The determination of the crystal structure of the bacterial protein proaerolysin provided the first view of a pore-forming toxin constructed mainly from beta-sheet. The structure that was obtained and subsequent crystallographic and biochemical studies hav ...
Cytolytic pore-forming toxins are important for the virulence of many disease-causing bacteria. How target cells molecularly respond to these toxins and whether or not they can mount a defense are poorly understood. By using microarrays, we demonstrate tha ...