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Abstract Legionella pneumophila uses the Dot/Icm type IV secretion system (T4SS) to translocate hundreds of effector proteins into host cells, yet how this transenvelope machine assembles and becomes secretion competent remains poorly understood. Here, using cryo–electron tomography and in situ single-particle cryo–electron microscopy, we resolve distinct structural and functional states of the native Dot/Icm T4SS.
As a journalist, you can create a free Muck Rack account to customize your profile, list your contact preferences, and upload a portfolio of your best work.