ReviewMicrobiology (Reading, England)2026
Type III secretion system chaperones: a helping hand for secretion.
Review in Microbiology (Reading, England), 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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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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6 authors.
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Abstract
The type III secretion system (T3SS) is a virulence mechanism commonly used by Gram-negative bacterial pathogens to deliver virulence proteins, known as effectors, into infected cells. The T3SS secretes a range of different substrates: first the needle subunits, then the translocon pore components and finally a pathogen-specific range of effector proteins. Each of these classes of substrates interacts with a corresponding class of bacterial chaperones, which are required for their efficient secretion. The requirement for these chaperones has been attributed to multiple functions, including preventing premature substrate activity, maintaining substrate stability in the bacterial cytoplasm and mediating substrate targeting and secretion hierarchy. Here, we bring together what is known about the function of T3SS chaperones in a range of different bacterial pathogens. Through analysis of the conservation of chaperone sequence and structure, we discuss how these proteins interact with and support the secretion of diverse substrates. Finally, we evaluate the extent to which chaperones are universally required for effector secretion.
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