Results 31 to 40 of about 3,995 (211)

Purification and Characterization of Colicin E2 and Colicin E3

open access: yesJournal of Biological Chemistry, 1967
Abstract Colicin E2 and colicin E3 were purified from Escherichia coli W3110(ColE2) and W3110(ColE3), respectively, by salt extraction, ammonium sulfate precipitation, and ion exchange chromatography on diethylaminoethyl Sephadex and carboxymethyl Sephadex.
H R, Herschman, D R, Helinski
openaire   +2 more sources

Characterization of Colicin Ia and Colicin Ib: Antigenic Homology [PDF]

open access: yesJournal of Bacteriology, 1972
Immunological techniques have been employed to determine antigenic homology between colicin Ia and colicin Ib. Results of these experiments demonstrate that the two colicins are antigenically similar.
R E, Isaacson, J, Konisky
openaire   +2 more sources

Colicinogeny in Salmonella serovars isolated in Brazil

open access: yesMemorias do Instituto Oswaldo Cruz, 1988
A study of colicinogeny was made in 748 strains of Salmonella (97 serovars) isolated from different sources; human (291), animal (119), environmental (141), food (102) and animal feed (95).
Leila Carvalho Campos, Ernesto Hofer
doaj   +1 more source

Bacteriocin Production by Escherichia coli during Biofilm Development

open access: yesFoods, 2022
Escherichia coli is a highly versatile bacterium ranging from commensal to intestinal pathogen, and is an important foodborne pathogen. E. coli species are able to prosper in multispecies biofilms and secrete bacteriocins that are only toxic to species ...
Hanna Fokt   +7 more
doaj   +1 more source

Green fluorescent protein-based biosensor to detect and quantify stress responses induced by DNA-degrading colicins [PDF]

open access: yes, 2011
Here we report the development of a whole-cell biosensor to detect and quantify the induction of the SOS response activated by DNA-degrading colicins. This biosensor utilizes the SOS-responsive cda promoter to regulate the expression of green fluorescent
Chapman, T.A.   +11 more
core   +1 more source

The biology of colicin M [PDF]

open access: yesFEMS Microbiology Letters, 1991
This communication summarizes our present knowledge of colicin M, an unusual member of the colicin group. The gene encoding colicin M, cma, has been sequenced and the protein isolated and purified. With a deduced molecular size of 29,453 Da, colicin M is the smallest of the known colicins. The polypeptide can be divided into functional domains for cell
R E, Harkness, T, Olschläger
openaire   +2 more sources

Determining the Frequency of Genes Producing Colicins Ia and V in Escherichia coli Strains Isolated from Clinical Samples of Medical Centers in Yazd City [PDF]

open access: yesMajallah-i Dānishgāh-i ’Ulūm-i Pizishkī-i Shahīd Ṣadūqī Yazd, 2023
Introduction: Bacteriocins are peptides with antimicrobial properties. They are ribosomally synthesized and produced by both gram-positive and gram-negative bacteria. The bacteriocins produced by Escherichia coli are called colicins.
Habibollah Zare   +4 more
doaj  

Effect of colicins on uroseptic strains.

open access: yes, 2013
Effect of colicins E1, E6, E7, K and M on uroseptic strains UL209 (a) and UL141 (b). All colicins were added to the final concentration 1 µg/ml. Control represents the bacterial culture without colicin.
Živa Petkovšek (337006)   +3 more
core   +1 more source

Non-antibiotic proteins Colicins and Salmocins as novel antibacterial agents for control of foodborne pathogens Escherichia coli and Salmonella enterica [PDF]

open access: yes, 2023
This research comprehensively analyzes plant-produced recombinant bacteriocins, colicins and salmocins (colicin-like bacteriocins from Salmonella), addressing the escalating demand for innovative antimicrobials.
Schneider, Tobias
core   +1 more source

Microcins in Enterobacteriaceae: Peptide Antimicrobials in the Eco-Active Intestinal Chemosphere

open access: yesFrontiers in Microbiology, 2019
Microcins are low-molecular-weight, ribosomally produced, highly stable, bacterial-inhibitory molecules involved in competitive, and amensalistic interactions between Enterobacteriaceae in the intestine.
Fernando Baquero   +4 more
doaj   +1 more source

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