Many Gram-negative pathogens translocate virulence proteins directly into host cells using a type III secretion system. This complex secretion machinery is composed of approximately 25 different proteins that assemble to span both bacterial membranes, and contact the host cell to form a direct channel between the bacterial and host cell cytoplasms. Assembly of the system and efficient secretion of virulence proteins through this apparatus require specific chaperones. Although the machinery is...Expand abstract
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The type III needle and the damage done.
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