Results 81 to 90 of about 7,251 (175)

A TetR family regulator of an RND efflux system that directs artemisinin resistance in Vibrio cholerae

open access: yesmSystems
Artemisinin (ARS) displayed bactericidal activity against Vibrio cholerae. To assess the mechanistic details of its antibacterial action, we have isolated V.
In-Young Chung   +3 more
doaj   +1 more source

Antibiotic Resistance Mediated by the MacB ABC Transporter Family: A Structural and Functional Perspective

open access: yesFrontiers in Microbiology, 2018
The MacB ABC transporter forms a tripartite efflux pump with the MacA adaptor protein and TolC outer membrane exit duct to expel antibiotics and export virulence factors from Gram-negative bacteria.
Nicholas P. Greene   +3 more
doaj   +1 more source

Virulence genes in Moraxella spp. isolates from infectious bovine keratoconjunctivitis cases

open access: yesJournal of Infection in Developing Countries, 2015
Introduction: Infectious bovine keratoconjunctivitis (IBK) is an important ocular disease which affects cattle worldwide. To advance towards IBK effective prevention and treatment strategies, it is important to define the distribution and genetic ...
Vanessa Sosa   +3 more
doaj   +1 more source

Sequential Mechanism of Assembly of Multidrug Efflux Pump AcrAB-TolC

open access: yesChemistry & Biology, 2011
Multidrug efflux pumps adversely affect both the clinical effectiveness of existing antibiotics and the discovery process to find new ones. In this study, we reconstituted and characterized by surface plasmon resonance the assembly of AcrAB-TolC, the archetypal multidrug efflux pump from Escherichia coli.
Tikhonova, Elena B.   +2 more
openaire   +2 more sources

A widespread single amino acid mutation in AcrA reduces tigecycline susceptibility in Klebsiella pneumoniae

open access: yesMicrobiology Spectrum
Whole-genome sequencing of a clinical tigecycline non-susceptible Klebsiella pneumoniae strain reveals a novel T188A mutation in AcrA, raising awareness on its role in tigecycline resistance.
Yingchao Xu   +6 more
doaj   +1 more source

Genotypic and Cartwheel Phenotypic Detection of AcrAB-TolC, AcrAD-TolC, and AcrEF-TolC Pumps in Proteus mirabilis

open access: yesMedical Journal of Babylon
Background: Opportunistic pathogen Proteus mirabilis is resistant to multiple antibiotic classes and frequently causes infections. A significant threat to global public health exists in the emergence and spread of novel antimicrobial resistance genes ...
Hawraa Wahab Al-Kaim   +1 more
doaj   +1 more source

阴沟肠杆菌AcrAB-TolC外排系统基因研究

open access: yesZhongguo shiyan zhenduanxue, 2014
目的研究临床分离的阴沟肠杆菌AcrAB-TolC外排系统基因的携带情况及其与抗菌药物耐药性的关系。方法对临床分离的141株阴沟肠杆菌用MicroScanWalkAway40全自动细菌分析仪进行鉴定和药敏试验;聚合酶链式反应(PCR)检测AcrAB-TolC外排系统acrA,acrB,tolC和acrR 4种基因在阴沟肠杆菌中的分布,并对PCR产物进行纯化、克隆、测序。结果 acrA,acrB,tolC和acrR 4种基因在141株阴沟肠杆菌中的检出率分别为98.5%、51.06%、82.27%、78 ...
温见翔, 陈娟, 杨虹
doaj  

AcrB, AcrD, and MdtABC multidrug efflux systems are involved in enterobactin export in Escherichia coli.

open access: yesPLoS ONE, 2014
Escherichia coli produces the iron-chelating compound enterobactin to enable growth under iron-limiting conditions. After biosynthesis, enterobactin is released from the cell. However, the enterobactin export system is not fully understood.
Tsukasa Horiyama, Kunihiko Nishino
doaj   +1 more source

A historical perspective on the multifunctional outer membrane channel protein TolC in Escherichia coli

open access: yesnpj Antimicrobials and Resistance
Since its discovery nearly 60 years ago, TolC has been associated with various cellular functions in Escherichia coli, including the efflux of environmental stressors and virulence factors.
Mallory Wright   +3 more
doaj   +1 more source

Escherichia coli resistance mechanism AcrAB-TolC efflux pump interactions with commonly used antibiotics: a molecular dynamics study

open access: yesScientific Reports
While antibiotic resistance poses a threat from both Gram-positive bacteria (GPB) and Gram-negative bacteria (GNB), GNB pose a more imminent public health hazard globally. GNB are a threat to growing antibiotic resistance because of the complex makeup of
Brooke L. Smith   +2 more
doaj   +1 more source

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