This domain is found in the periplasmic membrane fusion proteins (MFPs) that are components of the RND tripartite drug efflux pumps. MFPs bridge the outer membrane factor and an inner membrane transporter. One characterized member is the Cation efflu ...
This domain is found in the periplasmic membrane fusion proteins (MFPs) that are components of the RND tripartite drug efflux pumps. MFPs bridge the outer membrane factor and an inner membrane transporter. One characterized member is the Cation efflux system protein CusB which is an essential component of the CusCBA tripartite efflux system from Escherichia coli. This protein plays an essential role in bridging the inner membrane efflux pump CusA and the outer membrane channel CusC to mediate resistance to Cu+ and Ag+ ions. CusB is a multidomain protein and assembles into homohexamer that forms a narrow channel defined by an alpha-helical domain and a barrel-sandwich hybrid domain in which it is inserted [1,2]. The remaining two domains, one of which is represented by this entry, form a cap-like structure that engages in interactions with the CusA trimer. The domain represented in this entry folds into a six-stranded closed beta-barrel with a greek-key topology which has a structural similarity to the C-terminal domain of alanine racemase. This domain is interrupted by the barrel-sandwich hybrid domain which is inserted after the first beta-strand of the barrel. This model does not include the N-terminal strand.
This domain is found in the Cobalt-zinc-cadmium resistance protein CzcB and its paralogue Nickel and cobalt resistance protein CnrB from Cupriavidus metallidurans and related proteins. CzcB is a crucial component of the CzcCBA protein complex, which ...
This domain is found in the Cobalt-zinc-cadmium resistance protein CzcB and its paralogue Nickel and cobalt resistance protein CnrB from Cupriavidus metallidurans and related proteins. CzcB is a crucial component of the CzcCBA protein complex, which mediates heavy metal resistance in bacteria through an active cation efflux mechanism [1]. CzcB binds to CzcA, which in turn is bound to CzcC, forming the complete CzcCBA complex.
This domain is found in the periplasmic membrane fusion proteins (MFPs) that are components of the RND tripartite drug efflux pumps. MFPs bridge the outer membrane factor and an inner membrane transporter. The most characterized MFP AcrA connects the ...
This domain is found in the periplasmic membrane fusion proteins (MFPs) that are components of the RND tripartite drug efflux pumps. MFPs bridge the outer membrane factor and an inner membrane transporter. The most characterized MFP AcrA connects the outer membrane factor TolC and the resistance- nodulation-division-type efflux transporter AcrB, which is a major multidrug efflux pump in Escherichia coli [1]. Another member MexA, a Pseudomonas aeruginosa homolog of AcrA, is a component of the tripartite multidrug efflux system MexAB-OprM which is a major factor for antibiotic resistance by exporting a large variety of antimicrobial compounds [2]. The domain represented by this entry folds into an open barrel with a circularly permuted topology of SH3-like barrels. This domain is involved in interactions with efflux pump membrane transporter.
