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 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]. The barrel-sandwich hybrid domain is an important structural feature found in membrane fusion proteins. This domain plays a crucial role in the assembly and function of tripartite drug efflux systems [2]. It is involved in interactions with the other components of the RND pumps.
