title: Molecular architecture of bacterial type IV secretion systems.
abstract: In Gram-negative bacteria, type IV secretion (T4S) systems form ATP-powered complexes that span the entire cellular envelope and secrete a wide variety of substrates from single proteins to protein-protein and protein-DNA complexes. Recent structural data, namely the electron microscopy structure of the T4S core complex and the atomic-resolution structure of its outer-membrane pore, have profoundly altered our understanding of T4S architecture and mechanisms.
authors.affiliation: Institute of Structural and Molecular Biology, University College London and Birkbeck College, Malet Street, London WC1E 7HX, UK. g.waksman@ucl.ac.uk
authors.forename: Gabriel
authors.initials: G
authors.lastname: Waksman
authors.forename: Rémi
authors.initials: R
authors.lastname: Fronzes
mesh_terms: D001425:Bacterial Outer Membrane Proteins / Q000737:chemistry / Q000378:metabolism; D001426:Bacterial Proteins / Q000737:chemistry / Q000378:metabolism; D058947:Bacterial Secretion Systems; D006090:Gram-Negative Bacteria / Q000737:chemistry / Q000166:cytology / Q000378:metabolism*
chemical_list: D001425:Bacterial Outer Membrane Proteins; D001426:Bacterial Proteins; D058947:Bacterial Secretion Systems