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Letter

Nature Cell Biology 8, 971–977 (1 September 2006) | doi:10.1038/ncb1463

The Legionella pneumophila effector protein DrrA is a Rab1 guanine nucleotide-exchange factor

Takahiro Murata , Anna Delprato , Alyssa Ingmundson , Derek K. Toomre , David G. Lambright & Craig R. Roy

The intracellular pathogen Legionella pneumophila avoids fusion with lysosomes and subverts membrane transport from the endoplasmic reticulum to create an organelle that supports bacterial replication. Transport of endoplasmic reticulum-derived vesicles to the Legionella-containing vacuole (LCV) requires bacterial proteins that are translocated into host cells by a type IV secretion apparatus called Dot/Icm.