LcrH, a class II chaperone from the type three secretion system, has a highly flexible native structure.

Abstract excerpt

The type three secretion system is a large and complex protein nano-machine that many Gram-negative pathogens employ to infect host cells. A key structure of this machine is a proteinaceous pore that inserts into the target membrane and forms a channel for bacterial toxins to flow from bacteria into the host cell. The pore is mainly formed from two large membrane proteins called "translocators." Importantly,...

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