Results 41 to 50 of about 3,995 (211)

Colicin E1 opens its hinge to plug TolC

eLife, 2022
The double membrane architecture of Gram-negative bacteria forms a barrier that is impermeable to most extracellular threats. Bacteriocin proteins evolved to exploit the accessible, surface-exposed proteins embedded in the outer membrane to deliver ...
S Jimmy Budiardjo, Jacqueline J Stevens, Anna L Calkins, Ayotunde P Ikujuni, Virangika K Wimalasena, Emre Firlar, David A Case, Julie S Biteen, Jason T Kaelber, Joanna SG Slusky   +9 more
doaj   +1 more source

Coliformes fecais em águas de esgoto: I. Resistência a antibióticos, metais pesados e colicinogenia Fecal coliforms in sewage treatment: I. Antibiotic and heavy metal resistance and colicinogeny

Memorias do Instituto Oswaldo Cruz, 1987
Análise bacteriológica de ordem qualitativa foi desenvolvida em duas estações de tratamento de esgoto da cidade do Rio de Janeiro no período de 1984 a 1985.
José Cavalcante de Albuquerque Ribeiro Dias, Ana Carolina Paulo Vicente, Ernesto Hofer   +2 more
doaj   +1 more source

Interaction of nuclease colicins with membranes: insertion depth correlates with bilayer perturbation. [PDF]

PLoS ONE, 2012
Protein transport across cellular membranes is an important aspect of toxin biology. Escherichia coli cell killing by nuclease colicins occurs through DNA (DNases) or RNA (RNases) hydrolysis and to this end their cytotoxic domains require transportation ...
Mireille Vankemmelbeke, Paul O Shea, Richard James, Christopher N Penfold   +3 more
doaj   +1 more source

Colicins and their potential in cancer treatment.

, 2007
Colicins are a family of antibacterial cytotoxins produced by Escherichia coli and released into the environment to reduce competition from other bacterial strains.
Lancaster, Lorna E., Rodnina, M. V., Wolfgang Wintermeyer, Lancaster, L., Wintermeyer, W., Marina V. Rodnina, Rodnina, Marina, Lancaster, L. E., Wintermeyer, Wolfgang, Rodnina, M., Lorna E. Lancaster   +10 more
core   +1 more source

Sterilisation Of Colicine Preparations [PDF]

Journal of Medical Microbiology, 1970
Summary Preparations of colicines A, B, D, E2, E3 and K were exposed in separate experiments to chloroform, heat, filtration, and ultraviolet light and the effects were examined quantitatively. Chloroform at a concentration of 5 per cent. (v/v) sterilised preparations of each colicine within 5 min. and there was an acceptably low degree of inactivation.
B W, Senior, H, Richardson, A H, Emslie-Smith   +2 more
openaire   +2 more sources

Genome‐Wide In Silico Analysis of the Type VI Secretion System (T6SS) Within the Morganella Genus

MicrobiologyOpen, Volume 15, Issue 3, June 2026.
▪ Species‐specific T6SS patterns among Morganella genus (M. morganii and M. sibonii). ▪ Only one‐third of M. morganii isolates haboured a T6SS. ▪ All M. sibonii possess four T6SS clusters. ▪ M. sibonii exhibited a wide diversity of effectors compared to M. morganii.
Mathilde Duque, Aymeric Jacquemin, Delphine Girlich, Rémy A. Bonnin, Laurent Dortet   +4 more
wiley   +1 more source

Genomic Map of Escherichia coli and Single Nucleotide Polymorphism Markers in Colorectal Cancer

Microbial Biotechnology, Volume 19, Issue 6, June 2026.
This study identified colorectal cancer‐associated SNPs in Escherichia coli using PacBio full‐genome sequencing, establishing a highly accurate SNP‐based model for non‐invasive colorectal cancer risk prediction. ABSTRACT Gut microbial single nucleotide polymorphisms (SNPs) offer stable, specific genetic markers for disease diagnosis.
Yang Xi, Zhong Liping, Xu Yating, Xu Yang, Chu Jian, Chu Caiyun, Li Shuwen, Zhang Zian, Yu Xiaojian, Han Shuwen, Wu Wei   +10 more
wiley   +1 more source

Recent Advances in Egg White Biotechnology, Microbiology, and Quality

Comprehensive Reviews in Food Science and Food Safety, Volume 25, Issue 3, May 2026.
ABSTRACT International trade in egg products has increased in recent decades to meet the rising demands of a global population, the food industry, and consumers. Egg white is a rich source of proteins and peptides suitable for various food applications. Processing egg whites is important in the food industry.
Insa Mannott, Ramona Bosse, Monika Gibis
wiley   +1 more source

Allosteric β-propeller signalling in TolB and its manipulation by translocating colicins [PDF]

, 2009
The Tol system is a five-protein assembly parasitized by colicins and bacteriophages that helps stabilize the Gram-negative outer membrane (OM). We show that allosteric signalling through the six-bladed beta-propeller protein TolB is central to Tol ...
Bonsor, Daniel A, Kleanthous, Kleanthis, Vankemmelbeke, M, Sharma, Amit, Housden, Nicholas G., Krachler, AM, Bonsor, DA, Sharma, A, Moore, GR, Bonsor, Daniel A., Moore, Geoffrey R, Housden, NG, Lilly, KJ, Hecht, Oliver, Housden, Nicholas G, Hecht, O, James, Richard, Vankemmelbeke, Mireille, Lilly, Katie J., James, R, Kleanthous, C, Krachler, Anne Marie, Kleanthous, Colin, Lilly, Katie J, Moore, Geoffrey R.   +24 more
core   +1 more source

Potential for Natural Antimicrobials, Including Mushroom Chitosan, to Control Shiga‐Toxigenic Escherichia coli in Ground Beef

Journal of Food Safety, Volume 46, Issue 2, April 2026.
This study evaluated the antimicrobial activity of 11 natural agents against eight STEC serotypes by determining their MIC and MBC at different pH and temperature conditions. Five agents demonstrating the strongest inhibitory activity in vitro were then tested at various concentrations in beef burgers inoculated with Escherichia coli O157 and stored ...
Angelos Papadochristopoulos, Joseph P. Kerry, Narelle Fegan, Catherine M. Burgess, Geraldine Duffy   +4 more
wiley   +1 more source