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FEMS Microbiology Letters, 2013 Bacteria are in constant conflict with competing bacterial and eukaryotic cells. To cope with the various challenges, bacteria developed distinct strategies, such as toxins that inhibit the growth or kill rivals of the same ecological niche.
Silke I Patzer, Braun Volkmar
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Colicin S8 export: extracellular and cytoplasmic colicin are different
International Microbiology, 2003The properties of colicin S8 are different for the cytoplasmic, periplasmic and extracellular protein. Interactions with its specific receptors reflect this. Active cell extracts separate into a non-anionic along with an anionic fraction by DEAE-Sephacell chromatography.
Maria-Elena, Garcia Diaz +1 more
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The Journal of Biochemistry, 1978
It was confirmed by polyacrylamide gel electrophoresis that isolated 16S rRNA was cleaved by the active component (protein A) or the active fragment (T2A) of colicin E3. However, the degradation was random, in contrast with the specific cleavage observed in the interaction of colicin E3 with ribosomes.
S, Ohno, K, Imahori
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It was confirmed by polyacrylamide gel electrophoresis that isolated 16S rRNA was cleaved by the active component (protein A) or the active fragment (T2A) of colicin E3. However, the degradation was random, in contrast with the specific cleavage observed in the interaction of colicin E3 with ribosomes.
S, Ohno, K, Imahori
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Functional domains of colicin A
Molecular Microbiology, 1988SummaryA large number of mutations which introduce deletions in colicin A have been constructed. The partially deleted colicin A proteins were purified and their activity in vivo (on sensitive cells) and in vitro (in planar lipid bilayers) was assayed. The receptor‐binding properties of each protein were also analysed.
D, Baty +6 more
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Colicin receptors and the mechanisms of colicin uptake.
Zentralblatt fur Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene. Erste Abteilung Originale. Reihe A: Medizinische Mikrobiologie und Parasitologie, 1980This review deals in detail with the nature, synthesis, physiologic functions, and the regulation of colicin receptors, which represent components of transportsystems, as well as with the two mechanisms of the colicin uptake within the groups A and B of colicins.
R J, Kadner, P J, Bassford, A P, Pugsley
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Colicin Js of Shigella sonnei: Classification of type colicin “7”
Zentralblatt für Bakteriologie, Mikrobiologie und Hygiene. Series A: Medical Microbiology, Infectious Diseases, Virology, Parasitology, 1987Colicinotype 7 of Shigella sonnei, introduced by Abbott and Graham, is one of those most frequently found in epidemiological screenings. It is represented by the production of a single colicin (acidic protein of m. w. 46 kD) endowed with some striking features. It is unstable at pH 8.0 and at the temperature of 70 degrees C.
J, Smarda, J, Petrzelová, B, Vyskot
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Nature, 1961
COLICINES are unique among antibiotics in being specifically adsorbed on to the surface of bacteria in a manner analogous to antibodies and bacteriophages. Besides being removed from solution by adsorption on sensitive bacteria1, they can be inactivated by extracts of sensitive, but not of resistant, organisms2.
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COLICINES are unique among antibiotics in being specifically adsorbed on to the surface of bacteria in a manner analogous to antibodies and bacteriophages. Besides being removed from solution by adsorption on sensitive bacteria1, they can be inactivated by extracts of sensitive, but not of resistant, organisms2.
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Nature, 1963
COLICINES originally demonstrated in E. coli have since been found in many other Gram-negative bacilli present in the intestine, Ps. pyocyanea and some Gram-positive bacilli1–4. Such antibacterial substances are now called bacteriocines5. It has also been confirmed that bacteria of different genera may produce a similar colicine6 and that the range of ...
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COLICINES originally demonstrated in E. coli have since been found in many other Gram-negative bacilli present in the intestine, Ps. pyocyanea and some Gram-positive bacilli1–4. Such antibacterial substances are now called bacteriocines5. It has also been confirmed that bacteria of different genera may produce a similar colicine6 and that the range of ...
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Regulating colicin synthesis to cope with stress and lethality of colicin production
Biochemical Society Transactions, 2012Colicins are plasmid-encoded bacteriocins active against Escherichia coli and closely related species of Enterobacteriaceae. They promote microbial diversity and genetic diversity in E. coli populations. Colicin synthesis is characteristically repressed by the LexA protein, the key regulator of the SOS response.
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