Results 61 to 70 of about 3,995 (211)

Silencing of DNase Colicin E8 Gene Expression by a Complex Nucleoprotein Assembly Ensures Timely Colicin Induction.

open access: yesPLoS Genetics, 2015
Colicins are plasmid-encoded narrow spectrum antibiotics that are synthesized by strains of Escherichia coli and govern intraspecies competition. In a previous report, we demonstrated that the global transcriptional factor IscR, co dependently with the ...
Simona Kamenšek   +5 more
doaj   +1 more source

Colicins of the Escherichia coli uropathogenic strain collection

open access: yesActa Biologica Slovenica, 2006
110 uropathogenic Escherichia coli (UPEC) strains were screened for colicin production and 42 (38%) of the tested UPEC strains were found to be colicinogenic.
Marjanca Starčič Ejravec   +2 more
doaj   +1 more source

A short peptide derived from late embryogenesis abundant proteins enhances acid tolerance in Escherichia coli via modulation of two‐component regulatory systems

open access: yesThe FEBS Journal, Volume 293, Issue 3, Page 781-805, February 2026.
Expression of the LEA‐K peptide in E. coli BL21 (DE3) improved bacterial viability under acidic stress (pH4), suggesting a protective function. RNA‐sequencing of LEA‐K‐expressing vs. non‐expressing cells revealed 283 differentially expressed genes (DEGs). In silico docking linked LEA‐K to two‐component systems (TCS) proteins (Rcs, BtsS/R, and EnvZ/OmpR)
Khaled Metwally, Shinya Ikeno
wiley   +1 more source

Colicins and Salmocins – New Classes of Plant-Made Non-antibiotic Food Antibacterials

open access: yesFrontiers in Plant Science, 2019
Recently, several plant-made recombinant proteins received favorable regulatory review as food antibacterials in the United States through the Generally Recognized As Safe (GRAS) regulatory procedure, and applications for others are pending.
Simone Hahn-Löbmann   +7 more
doaj   +1 more source

The Subgingival Host–Microbial Landscape in Mothers With Periodontitis and Their At‐Risk Offspring

open access: yesJournal of Clinical Periodontology, Volume 53, Issue 2, Page 201-213, February 2026.
ABSTRACT Aim To evaluate the subgingival proteome and microbiome of mothers with periodontitis and their offspring, thereby assessing signatures of periodontal diseases. Methods Forty participants in four groups were included: mothers with periodontitis and their offspring, as well as periodontally healthy mothers and their offspring.
Hélvis E. S. Paz   +8 more
wiley   +1 more source

Effects of Lipopolysaccharide Core Modulation on Outer Membrane Protein Function and Virulence in Pectobacterium carotovorum

open access: yesMolecular Plant Pathology, Volume 27, Issue 1, January 2026.
The LPS core is critical for virulence in Pectobacterium carotovorum, as its truncation disrupts outer membrane protein assembly, reducing protease secretion, motility, and soft rot symptoms. ABSTRACT Lipopolysaccharide (LPS) is a critical component of the bacterial outer membrane, which serves as a permeability barrier and site for sensing ...
Yejin Park   +4 more
wiley   +1 more source

Mode of Action of Colicin A [PDF]

open access: yesJournal of Bacteriology, 1969
Colicin A acting on sensitive cells of Escherichia coli inhibits a number of energy-requiring cellular functions. It appears to act similarly to colicins E1 and K.
openaire   +2 more sources

Deciphering the Role of Colicins during Colonization of the Mammalian Gut by Commensal E. coli

open access: yesMicroorganisms, 2020
Colicins are specific and potent toxins produced by Enterobacteriaceae that result in the rapid elimination of sensitive cells. Colicin production is commonly found throughout microbial populations, suggesting its potential importance for bacterial ...
Amanda N. Samuels   +5 more
doaj   +1 more source

Antimicrobial Resistant Factors in Klebsiella pneumoniae Strains Isolated From Urinary Tract Infections, Wound Infections, Hospital Wastewater, and Cervical Cancers From Ghana, Togo, and Benin

open access: yesInternational Journal of Genomics, Volume 2026, Issue 1, 2026.
Klebsiella pneumoniae is a Gram‐negative, facultatively anaerobic member of the Enterobacteriaceae that functions both as a gut commensal and a major opportunistic pathogen implicated in severe hospital and community‐acquired infections. The rapid global expansion of antimicrobial‐resistant K.
Biigba Yakubu, Santasree Banerjee
wiley   +1 more source

Displacement of OmpF loop 3 is not required for the membrane translocation of colicins N and A in vivo

open access: yes, 1998
The pore-forming colicins N and A require the porin, OmpF, in order to translocate across the outer membrane of Escherichia coli. We investigated the hypothesis that in vivo, colicins N and A may traverse the outer membrane through the OmpF channel.
Graeme Bainbridge   +9 more
core   +1 more source

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