ArticleProceedings of the National Academy of Sciences of the United States of America2026
Step-by-step maturation mechanism of the binary toxin pore revealed by cryo-EM analysis.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Membrane pore-forming proteins (PFPs) form ring-shaped membrane-translocating oligomers on membranes, contributing to infection, immunity, and cell death functions. Binary toxins produced by some bacteria consist of an enzymatic component that acts as a toxin and a membrane-binding component that forms a pore that delivers the enzymatic component into target cells. Cryoelectron microscopy (cryo-EM) has advanced our understanding of these translocation mechanisms by revealing several binary toxin complexes' structures. However, the mechanisms underlying the initial pore formation remain unclear. We determined the structures of several oligomeric forms of the membrane-binding component Ib of the iota toxin from
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