DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Permeability barrier of Gram-negative cell envelopes and approaches to bypass it

Abstract

Gram-negative bacteria are intrinsically resistant to many antibiotics. Species that have acquired multidrug resistance and cause infections that are effectively untreatable present a serious threat to public health. The problem is broadly recognized and tackled at both the fundamental and applied levels. This article summarizes current advances in understanding the molecular bases of the low permeability barrier of Gram-negative pathogens, which is the major obstacle in discovery and development of antibiotics effective against such pathogens. Gaps in knowledge and specific strategies to break this barrier and to achieve potent activities against difficult Gram-negative bacteria are also discussed.

Authors:
 [1];  [2];  [2]
  1. Univ. of Oklahoma, Norman, OK (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1234255
Report Number(s):
LA-UR-15-27220
Journal ID: ISSN 2373-8227
Grant/Contract Number:  
AI052293; HDTRA1-14-1-0019; AC52-06NA25396
Resource Type:
Accepted Manuscript
Journal Name:
ACS Infectious Diseases
Additional Journal Information:
Journal Volume: 1; Journal Issue: 11; Journal ID: ISSN 2373-8227
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; gram-negative resistance; permeability barrier; outer membrane; multi-drug efflux

Citation Formats

Zgurskaya, Helen I., López, Cesar A., and Gnanakaran, Sandrasegaram. Permeability barrier of Gram-negative cell envelopes and approaches to bypass it. United States: N. p., 2015. Web. doi:10.1021/acsinfecdis.5b00097.
Zgurskaya, Helen I., López, Cesar A., & Gnanakaran, Sandrasegaram. Permeability barrier of Gram-negative cell envelopes and approaches to bypass it. United States. https://doi.org/10.1021/acsinfecdis.5b00097
Zgurskaya, Helen I., López, Cesar A., and Gnanakaran, Sandrasegaram. Fri . "Permeability barrier of Gram-negative cell envelopes and approaches to bypass it". United States. https://doi.org/10.1021/acsinfecdis.5b00097. https://www.osti.gov/servlets/purl/1234255.
@article{osti_1234255,
title = {Permeability barrier of Gram-negative cell envelopes and approaches to bypass it},
author = {Zgurskaya, Helen I. and López, Cesar A. and Gnanakaran, Sandrasegaram},
abstractNote = {Gram-negative bacteria are intrinsically resistant to many antibiotics. Species that have acquired multidrug resistance and cause infections that are effectively untreatable present a serious threat to public health. The problem is broadly recognized and tackled at both the fundamental and applied levels. This article summarizes current advances in understanding the molecular bases of the low permeability barrier of Gram-negative pathogens, which is the major obstacle in discovery and development of antibiotics effective against such pathogens. Gaps in knowledge and specific strategies to break this barrier and to achieve potent activities against difficult Gram-negative bacteria are also discussed.},
doi = {10.1021/acsinfecdis.5b00097},
journal = {ACS Infectious Diseases},
number = 11,
volume = 1,
place = {United States},
year = {Fri Sep 18 00:00:00 EDT 2015},
month = {Fri Sep 18 00:00:00 EDT 2015}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 341 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Antibacterial resistance worldwide: causes, challenges and responses
journal, November 2004

  • Levy, Stuart B.; Marshall, Bonnie
  • Nature Medicine, Vol. 10, Issue S12
  • DOI: 10.1038/nm1145

The need for new antibiotics
journal, January 2004


Emerging Issues in Gram-Negative Bacterial Resistance
journal, March 2015


Challenges of Antibacterial Discovery
journal, January 2011


Recover the lost art of drug discovery
journal, May 2012


Guest editor introduction
journal, May 2009


Multidrug Resistance in Bacteria
journal, June 2009


The Challenge of Efflux-Mediated Antibiotic Resistance in Gram-Negative Bacteria
journal, March 2015

  • Li, Xian-Zhi; Plésiat, Patrick; Nikaido, Hiroshi
  • Clinical Microbiology Reviews, Vol. 28, Issue 2
  • DOI: 10.1128/CMR.00117-14

Outer membrane permeability and antibiotic resistance
journal, May 2009


Waltzing transporters and 'the dance macabre' between humans and bacteria
journal, December 2006

  • Lomovskaya, Olga; Zgurskaya, Helen I.; Totrov, Maxim
  • Nature Reviews Drug Discovery, Vol. 6, Issue 1
  • DOI: 10.1038/nrd2200

Multicomponent drug efflux complexes: architecture and mechanism of assembly
journal, September 2009


In Vivo Emergence of Multidrug-Resistant Mutants of Pseudomonas aeruginosa Overexpressing the Active Efflux System MexA-MexB-OprM
journal, February 1999

  • Ziha-Zarifi, Isabelle; Llanes, Catherine; Köhler, Thilo
  • Antimicrobial Agents and Chemotherapy, Vol. 43, Issue 2
  • DOI: 10.1128/AAC.43.2.287

Expression of Multidrug Efflux Pump Genes acrAB-tolC , mdfA , and norE in Escherichia coli Clinical Isolates as a Function of Fluoroquinolone and Multidrug Resistance
journal, November 2010

  • Swick, Michelle C.; Morgan-Linnell, Sonia K.; Carlson, Kimberly M.
  • Antimicrobial Agents and Chemotherapy, Vol. 55, Issue 2
  • DOI: 10.1128/AAC.00996-10

Klebsiella pneumoniae AcrAB Efflux Pump Contributes to Antimicrobial Resistance and Virulence
journal, January 2010

  • Padilla, Emma; Llobet, Enrique; Doménech-Sánchez, Antonio
  • Antimicrobial Agents and Chemotherapy, Vol. 54, Issue 1
  • DOI: 10.1128/AAC.00715-09

Mechanisms of resistance to ciprofloxacin, ampicillin/sulbactam and imipenem in Acinetobacter baumannii clinical isolates in Taiwan
journal, April 2010


Structure of bacterial lipopolysaccharides
journal, November 2003


Structural diversity of the core oligosaccharide domain of Pseudomonas aeruginosa lipopolysaccharide
journal, July 2011


Pseudomonas aeruginosa lipopolysaccharide: A major virulence factor, initiator of inflammation and target for effective immunity
journal, September 2007


Unique Lipid A Modifications in Pseudomonas aeruginosa Isolated from the Airways of Patients with Cystic Fibrosis
journal, October 2007

  • Ernst, Robert K.; Moskowitz, Samuel M.; Emerson, Julia C.
  • The Journal of Infectious Diseases, Vol. 196, Issue 7
  • DOI: 10.1086/521367

Pseudomonas aeruginosa lipid A diversity and its recognition by Toll-like receptor 4
journal, December 2003


Review: Chemical and biological features of Burkholderia cepacia complex lipopolysaccharides
journal, June 2008


Phosphoethanolamine Modification of Lipid A in Colistin-Resistant Variants of Acinetobacter baumannii Mediated by the pmrAB Two-Component Regulatory System
journal, May 2011

  • Beceiro, Alejandro; Llobet, Enrique; Aranda, Jesús
  • Antimicrobial Agents and Chemotherapy, Vol. 55, Issue 7
  • DOI: 10.1128/AAC.00079-11

Outer membranes of Gram-negative bacteria are permeable to steroid probes
journal, May 1992


Use of steroids to monitor alterations in the outer membrane of Pseudomonas aeruginosa
journal, November 1997


Conserved and variable structural features in the lipopolysaccharide of Pseudomonas aeruginosa
journal, December 2006

  • Knirel, Yuriy A.; Bystrova, Olga V.; Kocharova, Nina A.
  • Journal of Endotoxin Research, Vol. 12, Issue 6
  • DOI: 10.1179/096805106X118906

Full Structure of the Lipopolysaccharide of Pseudomonas aeruginosa Immunotype 5
journal, February 2004


Structural Investigation of the Lipopolysaccharide from Acinetobacter Haemolyticus Strain NCTC 10305 (ATCC 17906, DNA Group 4)
journal, July 1997


Review: Lipopolysaccharide of Burkholderia cepacia complex
journal, August 2003


PhoPQ-Mediated Regulation Produces a More Robust Permeability Barrier in the Outer Membrane of Salmonella enterica Serovar Typhimurium
journal, October 2007

  • Murata, Takeshi; Tseng, Will; Guina, Tina
  • Journal of Bacteriology, Vol. 189, Issue 20
  • DOI: 10.1128/JB.00973-07

Lipid A Modification Systems in Gram-Negative Bacteria
journal, June 2007


Mechanisms of polymyxin resistance: acquired and intrinsic resistance in bacteria
journal, November 2014


The membranes of Gram-negative bacteria: progress in molecular modelling and simulation
journal, April 2015

  • Khalid, Syma; Berglund, Nils A.; Holdbrook, Daniel A.
  • Biochemical Society Transactions, Vol. 43, Issue 2
  • DOI: 10.1042/BST20140262

Modeling the electrostatic potential of asymmetric lipopolysaccharide membranes: The MEMPOT algorithm implemented in DelPhi
journal, May 2014

  • Dias, Roberta P.; Li, Lin; Soares, Thereza A.
  • Journal of Computational Chemistry, Vol. 35, Issue 19
  • DOI: 10.1002/jcc.23632

Hydration, ionic valence and cross-linking propensities of cations determine the stability of lipopolysaccharide (LPS) membranes
journal, January 2014

  • Nascimento, Agrinaldo; Pontes, Frederico J. S.; Lins, Roberto D.
  • Chem. Commun., Vol. 50, Issue 2
  • DOI: 10.1039/C3CC46918B

Broad-specificity efflux pumps and their role in multidrug resistance of Gram-negative bacteria
journal, March 2012


The porin and the permeating antibiotic: a selective diffusion barrier in Gram-negative bacteria
journal, November 2008

  • Pagès, Jean-Marie; James, Chloë E.; Winterhalter, Mathias
  • Nature Reviews Microbiology, Vol. 6, Issue 12
  • DOI: 10.1038/nrmicro1994

On the role of TolC in multidrug efflux: the function and assembly of AcrAB-TolC tolerate significant depletion of intracellular TolC protein: Role of TolC in multidrug efflux
journal, January 2013

  • Krishnamoorthy, Ganesh; Tikhonova, Elena B.; Dhamdhere, Girija
  • Molecular Microbiology, Vol. 87, Issue 5
  • DOI: 10.1111/mmi.12143

AcrA suppressor alterations reverse the drug hypersensitivity phenotype of a TolC mutant by inducing TolC aperture opening
journal, March 2010


OmpA Is the Principal Nonspecific Slow Porin of Acinetobacter baumannii
journal, August 2012

  • Sugawara, Etsuko; Nikaido, Hiroshi
  • Journal of Bacteriology, Vol. 194, Issue 15
  • DOI: 10.1128/JB.00435-12

Porins, efflux pumps and multidrug resistance in Acinetobacter baumannii
journal, February 2007

  • Vila, Jordi; Martí, Sara; Sánchez-Céspedes, Javier
  • Journal of Antimicrobial Chemotherapy, Vol. 59, Issue 6
  • DOI: 10.1093/jac/dkl509

Alternative folding pathways of the major porin OprF of Pseudomonas aeruginosa: Alternative folding pathways
journal, February 2012


Pseudomonas aeruginosa Porin OprF Exists in Two Different Conformations
journal, June 2006

  • Sugawara, Etsuko; Nestorovich, Ekaterina M.; Bezrukov, Sergey M.
  • Journal of Biological Chemistry, Vol. 281, Issue 24
  • DOI: 10.1074/jbc.M600680200

Toward Understanding the Outer Membrane Uptake of Small Molecules by Pseudomonas aeruginosa
journal, April 2013

  • Eren, Elif; Parkin, Jamie; Adelanwa, Ayodele
  • Journal of Biological Chemistry, Vol. 288, Issue 17
  • DOI: 10.1074/jbc.M113.463570

Role of the Novel OprD Family of Porins in Nutrient Uptake in Pseudomonas aeruginosa
journal, January 2006


Structural Basis for Outer Membrane Sugar Uptake in Pseudomonads
journal, November 2012


Small-Molecule Transport by CarO, an Abundant Eight-Stranded β-Barrel Outer Membrane Protein from Acinetobacter baumannii
journal, July 2015

  • Zahn, Michael; D'Agostino, Tommaso; Eren, Elif
  • Journal of Molecular Biology, Vol. 427, Issue 14
  • DOI: 10.1016/j.jmb.2015.03.016

The Outer Membrane of Acinetobacter: Structure-Function Relationships
book, January 1991


Expression and refolding of Omp38 from Burkholderia pseudomallei and Burkholderia thailandensis, and its function as a diffusion porin
journal, December 2004

  • Siritapetawee, Jaruwan; Prinz, Heino; Krittanai, Chartchai
  • Biochemical Journal, Vol. 384, Issue 3
  • DOI: 10.1042/BJ20041102

Molecular analysis of antimicrobial agent translocation through the membrane porin BpsOmp38 from an ultraresistant Burkholderia pseudomallei strain
journal, June 2011

  • Suginta, Wipa; Mahendran, Kozhinjampara R.; Chumjan, Watcharin
  • Biochimica et Biophysica Acta (BBA) - Biomembranes, Vol. 1808, Issue 6
  • DOI: 10.1016/j.bbamem.2010.10.018

Functional reconstitution, gene isolation and topology modelling of porins from Burkholderia pseudomallei and Burkholderia thailandensis
journal, February 2004

  • Siritapetawee, Jaruwan; Prinz, Heino; Samosornsuk, Worada
  • Biochemical Journal, Vol. 377, Issue 3
  • DOI: 10.1042/bj20031118

Kinetic control of TolC recruitment by multidrug efflux complexes
journal, September 2009

  • Tikhonova, E. B.; Dastidar, V.; Rybenkov, V. V.
  • Proceedings of the National Academy of Sciences, Vol. 106, Issue 38
  • DOI: 10.1073/pnas.0906601106

Sequential Mechanism of Assembly of Multidrug Efflux Pump AcrAB-TolC
journal, April 2011


AcrA, AcrB, and TolC of Escherichia coli Form a Stable Intermembrane Multidrug Efflux Complex
journal, July 2004

  • Tikhonova, Elena B.; Zgurskaya, Helen I.
  • Journal of Biological Chemistry, Vol. 279, Issue 31
  • DOI: 10.1074/jbc.M402230200

Antibiotic efflux mechanisms
journal, January 1999


A data-driven approach to modeling the tripartite structure of multidrug resistance efflux pumps: Modeling of Multidrug Resistance Efflux Pumps
journal, November 2014

  • Phillips, Joshua L.; Gnanakaran, S.
  • Proteins: Structure, Function, and Bioinformatics, Vol. 83, Issue 1
  • DOI: 10.1002/prot.24632

Bypassing the periplasm: Reconstitution of the AcrAB multidrug efflux pump of Escherichia coli
journal, June 1999

  • Zgurskaya, H. I.; Nikaido, H.
  • Proceedings of the National Academy of Sciences, Vol. 96, Issue 13
  • DOI: 10.1073/pnas.96.13.7190

Crystal structures of a multidrug transporter reveal a functionally rotating mechanism
journal, August 2006

  • Murakami, Satoshi; Nakashima, Ryosuke; Yamashita, Eiki
  • Nature, Vol. 443, Issue 7108
  • DOI: 10.1038/nature05076

Multidrug binding properties of the AcrB efflux pump characterized by molecular dynamics simulations
journal, November 2012

  • Vargiu, A. V.; Nikaido, H.
  • Proceedings of the National Academy of Sciences, Vol. 109, Issue 50
  • DOI: 10.1073/pnas.1218348109

Structures of the multidrug exporter AcrB reveal a proximal multisite drug-binding pocket
journal, November 2011

  • Nakashima, Ryosuke; Sakurai, Keisuke; Yamasaki, Seiji
  • Nature, Vol. 480, Issue 7378, p. 565-569
  • DOI: 10.1038/nature10641

Kinetic behavior of the major multidrug efflux pump AcrB of Escherichia coli
journal, March 2009

  • Nagano, K.; Nikaido, H.
  • Proceedings of the National Academy of Sciences, Vol. 106, Issue 14
  • DOI: 10.1073/pnas.0901695106

Multidrug Efflux in Pseudomonas aeruginosa Components, Mechanisms and Clinical Significance
journal, May 2001

  • Poole, Keith; Srikumar, Ramakrishnan
  • Current Topics in Medicinal Chemistry, Vol. 1, Issue 1
  • DOI: 10.2174/1568026013395605

Two Efflux Systems Expressed Simultaneously in Multidrug-Resistant Pseudomonas aeruginosa
journal, October 2000


Efflux-mediated multiresistance in Gram-negative bacteria
journal, January 2004


Multidrug Efflux Systems Play an Important Role in the Invasiveness of Pseudomonas aeruginosa
journal, July 2002

  • Hirakata, Yoichi; Srikumar, Ramakrishnan; Poole, Keith
  • Journal of Experimental Medicine, Vol. 196, Issue 1
  • DOI: 10.1084/jem.20020005

Efflux pump-mediated drug resistance in Burkholderia
journal, April 2015

  • Podnecky, Nicole L.; Rhodes, Katherine A.; Schweizer, Herbert P.
  • Frontiers in Microbiology, Vol. 06
  • DOI: 10.3389/fmicb.2015.00305

Efflux-Mediated Antibiotic Resistance in Acinetobacter spp
journal, March 2011

  • Coyne, Sébastien; Courvalin, Patrice; Périchon, Bruno
  • Antimicrobial Agents and Chemotherapy, Vol. 55, Issue 3
  • DOI: 10.1128/AAC.01388-10

Antibiotic Susceptibility Profiles ofEscherichia coli Strains Lacking Multidrug Efflux Pump Genes
journal, April 2001


A coordinated network of transporters with overlapping specificities provides a robust survival strategy
journal, May 2009

  • Tal, N.; Schuldiner, S.
  • Proceedings of the National Academy of Sciences, Vol. 106, Issue 22
  • DOI: 10.1073/pnas.0902400106

Interplay between Efflux Pumps May Provide Either Additive or Multiplicative Effects on Drug Resistance
journal, June 2000


Mechanistic Parallels in Bacterial and Human Multidrug Efflux Transporters
journal, October 2002


Bacterial multidrug transport through the lens of the major facilitator superfamily
journal, May 2009

  • Fluman, Nir; Bibi, Eitan
  • Biochimica et Biophysica Acta (BBA) - Proteins and Proteomics, Vol. 1794, Issue 5
  • DOI: 10.1016/j.bbapap.2008.11.020

EmrE, a model for studying evolution and mechanism of ion-coupled transporters
journal, May 2009


Multidrug efflux transporters in the MATE family
journal, May 2009

  • Kuroda, Teruo; Tsuchiya, Tomofusa
  • Biochimica et Biophysica Acta (BBA) - Proteins and Proteomics, Vol. 1794, Issue 5
  • DOI: 10.1016/j.bbapap.2008.11.012

Prospects for new antibiotics: a molecule-centered perspective
journal, June 2013

  • Walsh, Christopher T.; Wencewicz, Timothy A.
  • The Journal of Antibiotics, Vol. 67, Issue 1
  • DOI: 10.1038/ja.2013.49

Polymyxins and their novel derivatives
journal, October 2010


Teaching ‘Old’ Polymyxins New Tricks: New-Generation Lipopeptides Targeting Gram-Negative ‘Superbugs’
journal, March 2014

  • Velkov, Tony; Roberts, Kade D.; Nation, Roger L.
  • ACS Chemical Biology, Vol. 9, Issue 5
  • DOI: 10.1021/cb500080r

Investigational Antimicrobial Agents of 2013
journal, October 2013

  • Pucci, Michael J.; Bush, Karen
  • Clinical Microbiology Reviews, Vol. 26, Issue 4
  • DOI: 10.1128/CMR.00033-13

Toward the Rational Design of Carbapenem Uptake in Pseudomonas aeruginosa
journal, April 2015


Recent insights into iron import by bacteria
journal, April 2011


Metallome of P seudomonas aeruginosa : a role for siderophores: Metallome of Pseudomonas aeruginosa
journal, August 2015

  • Cunrath, Olivier; Geoffroy, Valérie A.; Schalk, Isabelle J.
  • Environmental Microbiology, Vol. 18, Issue 10
  • DOI: 10.1111/1462-2920.12971

Siderophore conjugates: Siderophore conjugates
journal, January 2013

  • Page, Malcolm G. P.
  • Annals of the New York Academy of Sciences, Vol. 1277, Issue 1
  • DOI: 10.1111/nyas.12024

In Vitro Properties of BAL30072, a Novel Siderophore Sulfactam with Activity against Multiresistant Gram-Negative Bacilli
journal, June 2010

  • Page, Malcolm G. P.; Dantier, Clothilde; Desarbre, Eric
  • Antimicrobial Agents and Chemotherapy, Vol. 54, Issue 6
  • DOI: 10.1128/AAC.01525-09

Pacidamycins, a novel series of antibiotics with anti-Pseudomonas aeruginosa activity. II. Isolation and structural elucidation.
journal, January 1989

  • Chen, Randal H.; Buko, Alexander M.; Whittern, David N.
  • The Journal of Antibiotics, Vol. 42, Issue 4
  • DOI: 10.7164/antibiotics.42.512

Pacidamycins, a novel series of antibiotics with anti-Pseudomonas aeruginosa activity. III. Microbiologic profile.
journal, January 1989

  • Fernandes, Prabhavathi B.; Swanson, Robert N.; Hardy, Dwight J.
  • The Journal of Antibiotics, Vol. 42, Issue 4
  • DOI: 10.7164/antibiotics.42.521

Pacidamycins, a novel series of antibiotics with anti-Pseudomonas aeruginosa activity. I. Taxonomy of the producing organism and fermentation.
journal, January 1989


High-Level Pacidamycin Resistance in Pseudomonas aeruginosa Is Mediated by an Opp Oligopeptide Permease Encoded by the opp-fabI Operon
journal, August 2013

  • Mistry, Anita; Warren, Mark S.; Cusick, John K.
  • Antimicrobial Agents and Chemotherapy, Vol. 57, Issue 11
  • DOI: 10.1128/AAC.01198-13

Physicochemical Properties of Antibacterial Compounds: Implications for Drug Discovery
journal, May 2008

  • O’Shea, Rosemarie; Moser, Heinz E.
  • Journal of Medicinal Chemistry, Vol. 51, Issue 10
  • DOI: 10.1021/jm700967e

A predictive model for drug bioaccumulation and bioactivity in Caenorhabditis elegans
journal, May 2010

  • Burns, Andrew R.; Wallace, Iain M.; Wildenhain, Jan
  • Nature Chemical Biology, Vol. 6, Issue 7
  • DOI: 10.1038/nchembio.380

General Platform for Systematic Quantitative Evaluation of Small-Molecule Permeability in Bacteria
journal, September 2014

  • Davis, Tony D.; Gerry, Christopher J.; Tan, Derek S.
  • ACS Chemical Biology, Vol. 9, Issue 11
  • DOI: 10.1021/cb5003015

Thinking Outside the “Bug”: A Unique Assay To Measure Intracellular Drug Penetration in Gram-Negative Bacteria
journal, March 2015

  • Zhou, Ying; Joubran, Camil; Miller-Vedam, Lakshmi
  • Analytical Chemistry, Vol. 87, Issue 7
  • DOI: 10.1021/ac504880r

Molecular Determinants of AcrB-Mediated Bacterial Efflux Implications for Drug Discovery: Miniperspective
journal, January 2012

  • Manchester, John I.; Buurman, Ed T.; Bisacchi, Gregory S.
  • Journal of Medicinal Chemistry, Vol. 55, Issue 6
  • DOI: 10.1021/jm201275d

Molecular Simulations of Gram-Negative Bacterial Membranes: A Vignette of Some Recent Successes
journal, August 2015


Interaction of the Antimicrobial Peptide Polymyxin B1 with Both Membranes of E. coli: A Molecular Dynamics Study
journal, April 2015


Selected Arylpiperazines Are Capable of Reversing Multidrug Resistance in Escherichia coli Overexpressing RND Efflux Pumps
journal, February 2005


Conformationally-restricted analogues of efflux pump inhibitors that potentiate the activity of levofloxacin in Pseudomonas aeruginosa
journal, August 2003

  • Renau, Thomas E.; Léger, Roger; Filonova, Lubov
  • Bioorganic & Medicinal Chemistry Letters, Vol. 13, Issue 16
  • DOI: 10.1016/S0960-894X(03)00556-0

The relationship between physicochemical properties, In vitro activity and pharmacokinetic profiles of analogues of diamine-Containing efflux pump inhibitors
journal, December 2003

  • Watkins, William J.; Landaverry, Yakira; Léger, Roger
  • Bioorganic & Medicinal Chemistry Letters, Vol. 13, Issue 23
  • DOI: 10.1016/j.bmcl.2003.07.030

Identification and Characterization of Inhibitors of Multidrug Resistance Efflux Pumps in Pseudomonas aeruginosa: Novel Agents for Combination Therapy
journal, January 2001


Quinazolinone fungal efflux pump inhibitors. Part 3: (N-methyl)piperazine variants and pharmacokinetic optimization
journal, May 2007

  • Watkins, William J.; Chong, Lee; Cho, Aesop
  • Bioorganic & Medicinal Chemistry Letters, Vol. 17, Issue 10
  • DOI: 10.1016/j.bmcl.2007.02.047

3-Arylpiperidines as potentiators of existing antibacterial agents
journal, July 2001

  • Thorarensen, Atli; Presley-Bodnar, Alice L.; Marotti, Keith R.
  • Bioorganic & Medicinal Chemistry Letters, Vol. 11, Issue 14
  • DOI: 10.1016/S0960-894X(01)00330-4

Characterization of a Novel Pyranopyridine Inhibitor of the AcrAB Efflux Pump of Escherichia coli
journal, November 2013

  • Opperman, Timothy J.; Kwasny, Steven M.; Kim, Hong-Suk
  • Antimicrobial Agents and Chemotherapy, Vol. 58, Issue 2
  • DOI: 10.1128/AAC.01866-13

MexAB-OprM-Specific efflux pump inhibitors in Pseudomonas aeruginosa. Part 1: Discovery and early strategies for lead optimization
journal, December 2003

  • Nakayama, Kiyoshi; Ishida, Yohei; Ohtsuka, Masami
  • Bioorganic & Medicinal Chemistry Letters, Vol. 13, Issue 23
  • DOI: 10.1016/j.bmcl.2003.07.024

Structural basis for the inhibition of bacterial multidrug exporters
journal, June 2013

  • Nakashima, Ryosuke; Sakurai, Keisuke; Yamasaki, Seiji
  • Nature, Vol. 500, Issue 7460, p. 102-106
  • DOI: 10.1038/nature12300

Use of a Genetic Approach To Evaluate the Consequences of Inhibition of Efflux Pumps in Pseudomonas aeruginosa
journal, June 1999

  • Lomovskaya, Olga; Lee, Angela; Hoshino, Kazuki
  • Antimicrobial Agents and Chemotherapy, Vol. 43, Issue 6
  • DOI: 10.1128/AAC.43.6.1340

Structure of the AcrAB–TolC multidrug efflux pump
journal, April 2014

  • Du, Dijun; Wang, Zhao; James, Nathan R.
  • Nature, Vol. 509, Issue 7501
  • DOI: 10.1038/nature13205

Works referencing / citing this record:

Development of a nebramine-cyclam conjugate as an antibacterial adjuvant to potentiate β-lactam antibiotics against multidrug-resistant P. aeruginosa
journal, August 2019

  • Ammeter, Derek; Idowu, Temilolu; Zhanel, George G.
  • The Journal of Antibiotics, Vol. 72, Issue 11
  • DOI: 10.1038/s41429-019-0221-9

Bifurcation kinetics of drug uptake by Gram-negative bacteria
journal, September 2017


Fluoroquinolone-derived fluorescent probes for studies of bacterial penetration and efflux
journal, January 2019

  • Stone, M. Rhia L.; Masi, Muriel; Phetsang, Wanida
  • MedChemComm, Vol. 10, Issue 6
  • DOI: 10.1039/c9md00124g

Mechanistic aspects of maltotriose-conjugate translocation to the Gram-negative bacteria cytoplasm
journal, December 2018

  • Dumont, Estelle; Vergalli, Julia; Pajovic, Jelena
  • Life Science Alliance, Vol. 2, Issue 1
  • DOI: 10.26508/lsa.201800242

Pronounced activity of aromatic selenocyanates against multidrug resistant ESKAPE bacteria
journal, January 2019

  • Nasim, Muhammad Jawad; Witek, Karolina; Kincses, Annamária
  • New Journal of Chemistry, Vol. 43, Issue 15
  • DOI: 10.1039/c9nj00563c

Ironing out pyoverdine’s chromophore structure: serendipity or design?
journal, June 2019

  • Cézard, Christine; Sonnet, Pascal; Bouvier, Benjamin
  • JBIC Journal of Biological Inorganic Chemistry, Vol. 24, Issue 5
  • DOI: 10.1007/s00775-019-01678-x

Genome-wide discovery of epistatic loci affecting antibiotic resistance using evolutionary couplings
journal, June 2018

  • Schubert, Benjamin; Maddamsetti, Rohan; Nyman, Jackson
  • Nature Microbiology
  • DOI: 10.1101/325993

Antipathogenic Potential of a Polyherbal Wound-Care Formulation (Herboheal) against Certain Wound-Infective Gram-Negative Bacteria
journal, January 2019

  • Patel, Pooja; Joshi, Chinmayi; Kothari, Vijay
  • Advances in Pharmacological Sciences, Vol. 2019
  • DOI: 10.1155/2019/1739868

Porins and small-molecule translocation across the outer membrane of Gram-negative bacteria
journal, December 2019

  • Vergalli, Julia; Bodrenko, Igor V.; Masi, Muriel
  • Nature Reviews Microbiology, Vol. 18, Issue 3
  • DOI: 10.1038/s41579-019-0294-2

Increasing the permeability of Escherichia coli using MAC13243
journal, December 2017


The Concept of an Ideal Antibiotic: Implications for Drug Design
journal, March 2019


Can Biofilm Be Reversed Through Quorum Sensing in Pseudomonas aeruginosa?
journal, July 2019


Antimicrobial activity of trans -cinnamic acid and commonly used antibiotics against important fish pathogens and nonpathogenic isolates
journal, October 2018

  • Yilmaz, S.; Sova, M.; Ergün, S.
  • Journal of Applied Microbiology, Vol. 125, Issue 6
  • DOI: 10.1111/jam.14097

Polysaccharides from Burkholderia species as targets for vaccine development, immunomodulation and chemical synthesis
journal, January 2018

  • Cloutier, Maude; Muru, Kevin; Ravicoularamin, Gokulakrishnan
  • Natural Product Reports, Vol. 35, Issue 12
  • DOI: 10.1039/c8np00046h

Mechanistic insight into the effect of BT‐benzo‐29 on the Z‐ring in Bacillus subtilis
journal, May 2020

  • Kunal, Kishore; Tiwari, Rishu; Dhaked, Hemendra P. S.
  • IUBMB Life, Vol. 72, Issue 5
  • DOI: 10.1002/iub.2234

Towards the Evolution of Artificial Metalloenzymes—A Protein Engineer's Perspective
journal, February 2019

  • Markel, Ulrich; Sauer, Daniel F.; Schiffels, Johannes
  • Angewandte Chemie International Edition, Vol. 58, Issue 14
  • DOI: 10.1002/anie.201811042

Design of stapled antimicrobial peptides that are stable, nontoxic and kill antibiotic-resistant bacteria in mice
journal, August 2019


The cyclic peptide labaditin does not alter the outer membrane integrity of Salmonella enterica serovar Typhimurium
journal, February 2019


A simple phenotypic test for detecting the contribution of outer membrane permeability to carbapenem resistance
journal, January 2020

  • Pinet, Elizabeth; Franceschi, Christine; Collin, Valérie
  • Journal of Medical Microbiology, Vol. 69, Issue 1
  • DOI: 10.1099/jmm.0.001129

Gram-negative synergy and mechanism of action of alkynyl bisbenzimidazoles
journal, October 2019


The characteristics of antibiotic resistance and phenotypes in 29 outer‐membrane protein mutant strains in Aeromonas hydrophila
journal, August 2019


Sideromycins as Pathogen-Targeted Antibiotics
book, January 2017


Two Component Regulatory Systems and Antibiotic Resistance in Gram-Negative Pathogens
journal, April 2019

  • Bhagirath, Anjali Y.; Li, Yanqi; Patidar, Rakesh
  • International Journal of Molecular Sciences, Vol. 20, Issue 7
  • DOI: 10.3390/ijms20071781

Mechanisms of envelope permeability and antibiotic influx and efflux in Gram-negative bacteria
journal, February 2017


A Small-Molecule Inhibitor of trans -Translation Synergistically Interacts with Cathelicidin Antimicrobial Peptides To Impair Survival of Staphylococcus aureus
journal, January 2019

  • Huang, Yueyang; Alumasa, John N.; Callaghan, Lauren T.
  • Antimicrobial Agents and Chemotherapy, Vol. 63, Issue 4
  • DOI: 10.1128/aac.02362-18

Siderophore–Antibiotic Conjugate Design: New Drugs for Bad Bugs?
journal, September 2019

  • Negash, Kokob H.; Norris, James K. S.; Hodgkinson, James T.
  • Molecules, Vol. 24, Issue 18, p. 3314
  • DOI: 10.3390/molecules24183314

Auf dem Weg zur Evolution artifizieller Metalloenzyme – aus einem Protein‐Engineering‐Blickwinkel
journal, February 2019

  • Markel, Ulrich; Sauer, Daniel F.; Schiffels, Johannes
  • Angewandte Chemie, Vol. 131, Issue 14
  • DOI: 10.1002/ange.201811042

Synthetic ionophores as non-resistant antibiotic adjuvants
journal, January 2019

  • Patel, Mohit B.; Garrad, Evan; Meisel, Joseph W.
  • RSC Advances, Vol. 9, Issue 4
  • DOI: 10.1039/c8ra07641c

Bactericidal Properties of Plants-Derived Metal and Metal Oxide Nanoparticles (NPs)
journal, June 2018


De novo synthesis, structural assignment and biological evaluation of pseudopaline, a metallophore produced by Pseudomonas aeruginosa
journal, January 2019

  • Zhang, Jian; Zhao, Tianhu; Yang, Rongwen
  • Chemical Science, Vol. 10, Issue 27
  • DOI: 10.1039/c9sc01405e

Disrupting Gram-Negative Bacterial Outer Membrane Biosynthesis through Inhibition of the Lipopolysaccharide Transporter MsbA
journal, August 2018

  • Alexander, Mary Kate; Miu, Anh; Oh, Angela
  • Antimicrobial Agents and Chemotherapy, Vol. 62, Issue 11
  • DOI: 10.1128/aac.01142-18

Antibiotic Hybrids: the Next Generation of Agents and Adjuvants against Gram-Negative Pathogens?
journal, March 2018

  • Domalaon, Ronald; Idowu, Temilolu; Zhanel, George G.
  • Clinical Microbiology Reviews, Vol. 31, Issue 2
  • DOI: 10.1128/cmr.00077-17

TonB-Dependent Transporters in Sphingomonads: Unraveling Their Distribution and Function in Environmental Adaptation
journal, March 2020


Bipartite interactions, antibiotic production and biosynthetic potential of the Arabidopsis leaf microbiome
journal, July 2018

  • Helfrich, Eric J. N.; Vogel, Christine M.; Ueoka, Reiko
  • Nature Microbiology, Vol. 3, Issue 8
  • DOI: 10.1038/s41564-018-0200-0

Perspective on Antibacterial Lead Identification Challenges and the Role of Hypothesis-Driven Strategies
journal, March 2019

  • McDowell, Laura L.; Quinn, Cheryl L.; Leeds, Jennifer A.
  • SLAS DISCOVERY: Advancing the Science of Drug Discovery, Vol. 24, Issue 4
  • DOI: 10.1177/2472555218818786

Outer Membrane Porins
book, January 2019


Enterobacter spp.: Update on Taxonomy, Clinical Aspects, and Emerging Antimicrobial Resistance
journal, July 2019

  • Davin-Regli, Anne; Lavigne, Jean-Philippe; Pagès, Jean-Marie
  • Clinical Microbiology Reviews, Vol. 32, Issue 4
  • DOI: 10.1128/cmr.00002-19

Overcoming problems of poor drug penetration into bacteria: challenges and strategies for medicinal chemists
journal, March 2018


The outer membrane is an essential load-bearing element in Gram-negative bacteria
journal, July 2018


Nitro sulfonyl fluorides are a new pharmacophore for the development of antibiotics
journal, January 2018

  • Sadlowski, Corinne; Park, Bora; Araujo Borges, Clarissa
  • Molecular Systems Design & Engineering, Vol. 3, Issue 4
  • DOI: 10.1039/c8me00011e

Expanding the potential of NAI-107 for treating serious ESKAPE pathogens: synergistic combinations against Gram-negatives and bactericidal activity against non-dividing cells
journal, October 2017

  • Brunati, Cristina; Thomsen, Thomas T.; Gaspari, Eleonora
  • Journal of Antimicrobial Chemotherapy, Vol. 73, Issue 2
  • DOI: 10.1093/jac/dkx395

Bifunctional antimicrobial conjugates and hybrid antimicrobials
journal, January 2017

  • Klahn, P.; Brönstrup, M.
  • Natural Product Reports, Vol. 34, Issue 7
  • DOI: 10.1039/c7np00006e

Antimicrobial Activity of Several Cineole-Rich Western Australian Eucalyptus Essential Oils
journal, December 2018


The challenge of converting Gram-positive-only compounds into broad-spectrum antibiotics: Challenges in developing broad-spectrum antibiotics
journal, February 2018

  • Richter, Michelle F.; Hergenrother, Paul J.
  • Annals of the New York Academy of Sciences, Vol. 1435, Issue 1
  • DOI: 10.1111/nyas.13598

Inhibiting Bacterial Drug Efflux Pumps via Phyto-Therapeutics to Combat Threatening Antimicrobial Resistance
journal, December 2018


Type 9 secretion system structures reveal a new protein transport mechanism
journal, November 2018


Antibacterial and potentiation properties of charge-optimized polyrotaxanes for combating opportunistic bacteria
journal, January 2018

  • Qiao, Jing; Liu, Zhi; Purro, Max
  • Journal of Materials Chemistry B, Vol. 6, Issue 33
  • DOI: 10.1039/c8tb01610k

Surfactant-enhanced DNA accessibility to nuclease accelerates phenotypic β-lactam antibiotic susceptibility testing of Neisseria gonorrhoeae
journal, March 2020


Better living through chemistry: Addressing emerging antibiotic resistance
journal, February 2018

  • Coussens, Nathan P.; Molinaro, Ashley L.; Culbertson, Kayla J.
  • Experimental Biology and Medicine, Vol. 243, Issue 6
  • DOI: 10.1177/1535370218755659

Microbiology: Peeling Back the Layers of Bacterial Envelope Mechanics
journal, October 2018


Direct visualization of a molecular handshake that governs kin recognition and tissue formation in myxobacteria
journal, July 2019


Fluoroquinolone structure and translocation flux across bacterial membrane
journal, August 2017


A cAMP/CRP-controlled mechanism for the incorporation of extracellular ADP-glucose in Escherichia coli involving NupC and NupG nucleoside transporters
journal, October 2018


The cyclic peptide labaditin does not alter the outer membrane integrity of Salmonella enterica serovar Typhimurium
journal, February 2019


Expanding the potential of NAI-107 for treating serious ESKAPE pathogens: synergistic combinations against Gram-negatives and bactericidal activity against non-dividing cells
journal, October 2017

  • Brunati, Cristina; Thomsen, Thomas T.; Gaspari, Eleonora
  • Journal of Antimicrobial Chemotherapy, Vol. 73, Issue 2
  • DOI: 10.1093/jac/dkx395

Antipathogenic Potential of a Polyherbal Wound-Care Formulation (Herboheal) against Certain Wound-Infective Gram-Negative Bacteria
journal, January 2019

  • Patel, Pooja; Joshi, Chinmayi; Kothari, Vijay
  • Advances in Pharmacological Sciences, Vol. 2019
  • DOI: 10.1155/2019/1739868

Better living through chemistry: Addressing emerging antibiotic resistance
journal, February 2018

  • Coussens, Nathan P.; Molinaro, Ashley L.; Culbertson, Kayla J.
  • Experimental Biology and Medicine, Vol. 243, Issue 6
  • DOI: 10.1177/1535370218755659

Surfactant-enhanced DNA accessibility to nuclease accelerates phenotypic β-lactam antibiotic susceptibility testing of Neisseria gonorrhoeae
journal, March 2020


Polydim-I antimicrobial activity against MDR bacteria and its model membrane interaction
journal, June 2017

  • Rangel, Marisa; Castro, Fabíola Fernandes dos Santos; Mota-Lima, Lilian Daiene
  • PLOS ONE, Vol. 12, Issue 6
  • DOI: 10.1371/journal.pone.0178785

Bifurcation kinetics of drug uptake by Gram-negative bacteria
journal, September 2017


Mechanistic aspects of maltotriose-conjugate translocation to the Gram-negative bacteria cytoplasm
journal, December 2018

  • Dumont, Estelle; Vergalli, Julia; Pajovic, Jelena
  • Life Science Alliance, Vol. 2, Issue 1
  • DOI: 10.26508/lsa.201800242

E. coli Group 1 Capsular Polysaccharide Exportation Nanomachinary as a Plausible Antivirulence Target in the Perspective of Emerging Antimicrobial Resistance
journal, January 2017

  • Sachdeva, Shivangi; Palur, Raghuvamsi V.; Sudhakar, Karpagam U.
  • Frontiers in Microbiology, Vol. 8
  • DOI: 10.3389/fmicb.2017.00070

Inhibiting Bacterial Drug Efflux Pumps via Phyto-Therapeutics to Combat Threatening Antimicrobial Resistance
journal, December 2018


Two Component Regulatory Systems and Antibiotic Resistance in Gram-Negative Pathogens
journal, April 2019

  • Bhagirath, Anjali Y.; Li, Yanqi; Patidar, Rakesh
  • International Journal of Molecular Sciences, Vol. 20, Issue 7
  • DOI: 10.3390/ijms20071781

Antibacterial and Antitubercular Activities of Cinnamylideneacetophenones
journal, October 2017


Bactericidal Properties of Plants-Derived Metal and Metal Oxide Nanoparticles (NPs)
journal, June 2018


The Concept of an Ideal Antibiotic: Implications for Drug Design
journal, March 2019


Siderophore–Antibiotic Conjugate Design: New Drugs for Bad Bugs?
journal, September 2019

  • Negash, Kokob H.; Norris, James K. S.; Hodgkinson, James T.
  • Molecules, Vol. 24, Issue 18, p. 3314
  • DOI: 10.3390/molecules24183314