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Cry toxins from Bacillus thuringiensis (Bt) are used for insect control. Their primary action is to lyse midgut epithelial cells. In lepidopteran insects, Cry1A monomeric toxins interact with a first receptor and this interaction triggers toxin oligomerization. The oligomeric structure interacts then with a second GPI-anchored receptor that induces insertion into membrane microdomains and larvae death...
The molecular structure of antibodies associated with autoimmune thrombosis is beginning to be understood. We describe the binding specificities and sequence analysis of anti-β 2 -glycoprotein-I (anti-β 2 GP-I) or anti-prothrombin (anti-PT) antibody fragments generated by phage display from a patient with primary antiphospholipid syndrome (APS). We obtained 39 positive clones, two...
Bacillus thuringiensis subs israelensis produces Cry toxins active against mosquitoes. Receptor binding is a key determinant for specificity of Cry toxins composed of three domains. We found that exposed loop α-8 of Cry11Aa toxin, located in domain II, is an important epitope involved in receptor interaction. Synthetic peptides corresponding to exposed regions in domain II (loop α-8, β-4 and loop...
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