Search Results - "Pos, Klaas M"
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AcrB: a mean, keen, drug efflux machine
Published in Annals of the New York Academy of Sciences (01-01-2020)“…Gram‐negative bacteria are intrinsically resistant against cytotoxic substances by means of their outer membrane and a network of multidrug efflux systems,…”
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Allosteric drug transport mechanism of multidrug transporter AcrB
Published in Nature communications (29-06-2021)“…Gram-negative bacteria maintain an intrinsic resistance mechanism against entry of noxious compounds by utilizing highly efficient efflux pumps. The E. coli…”
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Structure, mechanism and cooperation of bacterial multidrug transporters
Published in Current opinion in structural biology (01-08-2015)“…•Structure-based mechanisms are available for five major classes of multi-drug transporters.•Three transporter classes form tripartite assemblies spanning the…”
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RND efflux pumps: structural information translated into function and inhibition mechanisms
Published in Current topics in medicinal chemistry (2013)“…Efflux pumps of the Resistance Nodulation Division (RND) superfamily play a major role in the intrinsic and acquired resistance of Gram-negative pathogens to…”
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Transport of lipophilic carboxylates is mediated by transmembrane helix 2 in multidrug transporter AcrB
Published in Nature communications (16-12-2016)“…The deployment of multidrug efflux pumps is a powerful defence mechanism for Gram-negative bacterial cells when exposed to antimicrobial agents. The major…”
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Molecular basis for inhibition of AcrB multidrug efflux pump by novel and powerful pyranopyridine derivatives
Published in Proceedings of the National Academy of Sciences - PNAS (29-03-2016)“…The Escherichia coli AcrAB-TolC efflux pump is the archetype of the resistance nodulation cell division (RND) exporters from Gram-negative bacteria…”
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Tripartite assembly of RND multidrug efflux pumps
Published in Nature communications (12-02-2016)“…Tripartite multidrug efflux systems of Gram-negative bacteria are composed of an inner membrane transporter, an outer membrane channel and a periplasmic…”
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Binding and Transport of Carboxylated Drugs by the Multidrug Transporter AcrB
Published in Journal of molecular biology (14-02-2020)“…AcrAB(Z)-TolC is the main drug efflux transporter complex in Escherichia coli. The extrusion of various toxic compounds depends on several drug binding sites…”
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Transport of drugs by the multidrug transporter AcrB involves an access and a deep binding pocket that are separated by a switch-loop
Published in Proceedings of the National Academy of Sciences - PNAS (10-04-2012)“…AcrAB-TolC is the major efflux protein complex in Escherichia coli extruding a vast variety of antimicrobial agents from the cell. The inner membrane component…”
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Structural and functional analysis of the promiscuous AcrB and AdeB efflux pumps suggests different drug binding mechanisms
Published in Nature communications (25-11-2021)“…Upon antibiotic stress Gram-negative pathogens deploy resistance-nodulation-cell division-type tripartite efflux pumps. These include a H + /drug antiporter…”
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Structural characterization of the EmrAB-TolC efflux complex from E. coli
Published in Biochimica et biophysica acta. Biomembranes (01-01-2021)“…Gram-negative bacteria export a large variety of antimicrobial compounds by forming two-membrane spanning tripartite multidrug efflux systems composed of an…”
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Pyridylpiperazine-based allosteric inhibitors of RND-type multidrug efflux pumps
Published in Nature communications (10-01-2022)“…Efflux transporters of the RND family confer resistance to multiple antibiotics in Gram-negative bacteria. Here, we identify and chemically optimize…”
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Coupling of remote alternating-access transport mechanisms for protons and substrates in the multidrug efflux pump AcrB
Published in eLife (19-09-2014)“…Membrane transporters of the RND superfamily confer multidrug resistance to pathogenic bacteria, and are essential for cholesterol metabolism and embryonic…”
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A natural prodrug activation mechanism in nonribosomal peptide synthesis
Published in Nature chemical biology (18-09-2011)“…Cleavage of peptide precursors is well known for ribosomally produced sequences. Investigation of xenocoumacin biosynthesis now points to a similar function in…”
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Crystal structure and mechanistic basis of a functional homolog of the antigen transporter TAP
Published in Proceedings of the National Academy of Sciences - PNAS (24-01-2017)“…ABC transporters form one of the largest protein superfamilies in all domains of life, catalyzing the movement of diverse substrates across membranes. In this…”
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Structural Asymmetry of AcrB Trimer Suggests a Peristaltic Pump Mechanism
Published in Science (American Association for the Advancement of Science) (01-09-2006)“…The AcrA/AcrB/TolC complex spans the inner and outer membranes of Escherichia coli and serves as its major drug-resistance pump. Driven by the proton motive…”
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Dynamics of Intact MexAB-OprM Efflux Pump: Focusing on the MexA-OprM Interface
Published in Scientific reports (28-11-2017)“…Antibiotic efflux is one of the most critical mechanisms leading to bacterial multidrug resistance. Antibiotics are effluxed out of the bacterial cell by a…”
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18
Cytochrome c Oxidase Biogenesis and Metallochaperone Interactions: Steps in the Assembly Pathway of a Bacterial Complex
Published in PloS one (20-01-2017)“…Biogenesis of mitochondrial cytochrome c oxidase (COX) is a complex process involving the coordinate expression and assembly of numerous subunits (SU) of dual…”
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Update on the Discovery of Efflux Pump Inhibitors against Critical Priority Gram-Negative Bacteria
Published in Antibiotics (Basel) (01-01-2023)“…Antimicrobial resistance (AMR) has become a major problem in public health leading to an estimated 4.95 million deaths in 2019. The selective pressure caused…”
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Switch Loop Flexibility Affects Substrate Transport of the AcrB Efflux Pump
Published in Journal of molecular biology (08-12-2017)“…The functionally important switch loop of the trimeric multidrug transporter AcrB separates the access and deep drug binding pockets in every protomer. This…”
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