Investigation of gating in outer membrane porins provides new perspectives on antibiotic resistance mechanisms

AK Vasan, N Haloi, RJ Ulrich, ME Metcalf, PC Wen… - bioRxiv, 2021 - biorxiv.org
Gram-negative bacteria pose a serious public health concern, primarily due to a higher
frequency of antibiotic resistance conferred to them as a result of low permeability of their …

Role of internal loop dynamics in antibiotic permeability of outer membrane porins

AK Vasan, N Haloi, RJ Ulrich… - Proceedings of the …, 2022 - National Acad Sciences
Gram-negative bacteria pose a serious public health concern due to resistance to many
antibiotics, caused by the low permeability of their outer membrane (OM). Effective …

Upregulation of outer membrane porin gene ompC contributed to enhancement of azithromycin susceptibility in multidrug-resistant Escherichia coli

XW Luo, PL Li, YJ Zhai, YS Pan, GZ Hu… - Microbiology …, 2024 - Am Soc Microbiol
The outer membrane (OM) in gram-negative bacteria contains proteins that regulate the
passive or active uptake of small molecules for growth and cell function, as well as mediate …

Synergism between outer membrane proteins and antimicrobials

P Veiga-Crespo, E Fusté, T Vinuesa… - Antimicrobial agents …, 2011 - Am Soc Microbiol
Antibiotic-resistant bacteria are becoming one of the most important problems in health care
because of the number of resistant strains and the paucity of new effective antimicrobials …

How porin heterogeneity and trade-offs affect the antibiotic susceptibility of Gram-negative bacteria

T Ferenci, K Phan - Genes, 2015 - mdpi.com
Variations in porin proteins are common in Gram-negative pathogens. Altered or absent
porins reduce access of polar antibiotics across the outer membrane and can thus contribute …

marA locus causes decreased expression of OmpF porin in multiple-antibiotic-resistant (Mar) mutants of Escherichia coli

SP Cohen, LM McMurry, SB Levy - Journal of bacteriology, 1988 - Am Soc Microbiol
Mar (multiple antibiotic resistant) mutants of Escherichia coli express chromosomally
mediated resistance to a variety of structurally unrelated hydrophilic and hydrophobic …

Antisense micF RNA and 5'-UTR of the target ompF RNA: phylogenetic conservation of primary and secondary structures.

N Delihas - Nucleic acids symposium series, 1997 - europepmc.org
Outer membrane protein F (OmpF) found in E. coli and related bacteria is post-
transcriptionally regulated by antisense micF RNA. During down regulation of ompF …

Investigating strategies to combat gram-negative bacterial antibiotic resistance using molecular simulation

A Vasan - 2023 - ideals.illinois.edu
Gram-negative bacteria pose a significant public health concern since they are increasingly
becoming resistant to currently available antibiotics, and the development of new antibiotics …

Understanding antibiotic resistance via outer membrane permeability

I Ghai, S Ghai - Infection and drug resistance, 2018 - Taylor & Francis
Collective antibiotic drug resistance is a global threat, especially with respect to Gram-
negative bacteria. The low permeability of the bacterial outer cell wall has been identified as …

micF antisense RNA has a major role in osmoregulation of OmpF in Escherichia coli

N Ramani, M Hedeshian, M Freundlich - Journal of bacteriology, 1994 - Am Soc Microbiol
micF RNA, produced from a multicopy plasmid, was originally shown to be a major factor in
negative osmoregulation of the OmpF outer membrane protein in Escherichia coli. However …