Folding and Structure of the Pore Forming Toxin Aerolysin
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Colicins A and N are pore-forming bacterial toxins that kill Escherichia coli cells. Their mode of action involves three steps; binding to specific receptors located in the outer membrane, translocation through this membrane and the periplasm, and channel ...
Colicins are unusual bacterial toxins because they are directed against close relatives of the producing strain. They kill their targets in one of three distinct ways; via a ribonuclease or deoxyribonuclease activity or by forming pores in the target cell' ...
Aerolysin is a channel-forming protein secreted as a protoxin by Aeromonas hydrophila. Analytical centrifugation measurements showed that proaerolysin is a dimer in solution, and this was confirmed by chemical cross-linking with dimethyl suberimidate. Diss ...
The smaller form of the autoantigen glutamic acid decarboxylase, GAD65 (formerly the 64,000 Mr autoantigen), is a major target of humoral autoimmunity in type I diabetes. Human autoantisera have been used extensively to characterize the GAD65 antigen in bo ...
The 'molten' globular conformation of a protein is compact with a native secondary structure but a poorly defined tertiary structure. Molten globular states are intermediates in protein folding and unfolding and they may be involved in the translocation or ...
Pore-forming toxins, such as colicin A, are water-soluble proteins that insert into lipid bilayers. The water-soluble structure of Colicin A is known at a high resolution and this review describes the kinetic and structural steps involved in its soluble-to ...
The receptor that mediates the specific uptake and intracellular transport of dimeric immunoglobulin A (IgA dimer) in mucosal and glandular epithelia is identical with a transmembrane precursor of secreted secretory component. During transport, the IgA dim ...
The cloned ompA gene from Serratia marcescens was fully expressed in Escherichia coli and its product correctly assembled into the outer membrane. The S. marcescens polypeptide was not functionally equivalent to the E. coli OmpA protein, which serves as a ...
The ompA gene from Salmonella typhimurium, encoding a major heat-modifiable protein of the outer membrane, has been cloned and extensively characterized. When expressed in Escherichia coli the gene directs the synthesis of an OmpA protein which is function ...
The ompA gene from Enterobacter aerogenes was subcloned into a low-copy-number plasmid vector and the resultant plasmid, pTU7En, used to study its expression in Escherichia coli K12. Although the gene was strongly expressed and large amounts of OmpA protei ...