The 285 kDa Bap/RTX hybrid cell surface protein (SO4317) of Shewanella oneidensis MR-1 is a key mediator of biofilm formation.

Shewanella oneidensis, a Gram-negative bacterium with unusual respiratory versatility, is found in soil and sediment environments, and sporadically as an opportunistic pathogen in humans and aquatic animals. The ability to form biofilms is a critical factor in the environmental spread and survival of this bacterium. We subjected S.

The agglutination protein AggA from Shewanella oneidensis MR-1 is a TolC-like protein and forms active channels in vitro.

Type I secretion systems (TISS) are associated with the virulence of Gram-negative bacteria and the secretion of pathogenic molecular determinants. The Shewanella oneidensis MR-1 outer-membrane protein AggA is part of a TISS. Recombinant AggA expressed in Escherichia coli as inclusion bodies can be efficiently refolded in vitro, and can form active channel-tunnels as shown by proteoliposome swelling assays and electrophysiological measurements in lipid bilayers.

Proteomics of Shewanella oneidensis MR-1 biofilm reveals differentially expressed proteins, including AggA and RibB.

Shewanella oneidensis MR-1 is a Gram-negative, facultative aerobic bacterium, able to respire a variety of electron acceptors. Due to its capability to reduce solid ferric iron, S. oneidensis plays an important role in microbially induced corrosion of metal surfaces.