[Bacteriocin-like factor in Bacillus thuringiensis].

E M Netyksa; T A Smirnova; I B Minenkova; R R Azizbekian

PubMed · 481284

[Bacteriocin-like factor in Bacillus thuringiensis].

E M Netyksa·T A Smirnova·I B Minenkova·R R Azizbekian

Abstract

The paper describes Bacillus thuringiensis var. galleriae strains possessing a bacteriocin-like factor (factor K) which inhibits the cultures of a number of serotypes of Bac. thuringiensis. The K+ cultures exhibit no antibacterial effect on other gram-positive and gram-negative microorganisms. The maximal level of factor K is found by the 8--9th hour of cultivation. No correlation has been established between the strucutred elements in the preparations of K+ cultures and the antibacterial activity. Apparently, factor K can be transferred to other strains.

Explore related subjects

Antibiosis Bacillus thuringiensis Bacteriocins Culture Media Serotyping Structure-Activity Relationship Time Factors English Abstract Journal Article

Keep this discovery

Explore connections, maps & timelines

BibTeX RIS

E M Netyksa, T A Smirnova, I B Minenkova, R R Azizbekian. [Bacteriocin-like factor in Bacillus thuringiensis].. https://pubmed.ncbi.nlm.nih.gov/481284/

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

PubMed1992

[Growth inhibitory activity of clinical isolates of Pseudomonas aeruginosa against Staphylococcus aureus (MRSA and MSSA)].

Anti staphylococcal activity by clinical isolates of Pseudomonas aeruginosa was tested by the reversed agar plate and the filter paper stamp methods. Almost 40% of Pseudomonas aeruginosa inhibited the growth of both Methicillin resistant Staphylococcus aureus (MRSA) and Methicillin sensitive Staphylococcus aureus (MSSA). Green pigment (Pyocyanin) produced strains showed a strong inhibitory effect against MRSA and MSSA respectively. But some other pigment (Yellow, Red) strains also showed anti staphylococcal activity. These data suggest the colonization of Pseudomonas aeruginosa with anti staphylococcal activity may not be eradicated by the anti pseudomonic antibiotics.

Antibiosis↗

PubMed1992

Bacteriocin-like antagonism in Yersinia enterocolitica.

A total of 121 Yersinia enterocolitica O3 isolates from patients with gastroenteritis and 37 Y. enterocolitica reference strains with different O antigens were tested for bacteriocine production and sensitivity. By using cross-streaking method strains belonging to serogroups of O5; O7,8; O7,13; O11; O11,23; O13,27; O17; O19,8 and O34 produced bacteriocin-like substances. None of the Y. enterocolitica O3 strains produced bacteriocin-like material and most of them were uniformly sensitive against the bacteriocin-like material produced by strains of serogroups O7,8; O7,13; O13,27 and O19,8. By sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) significant differences were demonstrated in the whole cell protein patterns of Y. enterocolitica reference strains belonging to different serogroups in the range of 33-47 kilodalton (kDa). Out of the ten examined bacteriocin-like material producer strains only one strain harboured a plasmid of about 60 megadalton (MDa).

Antibiosis↗

PubMed1992

Inhibition of Salmonella ferlac by enterobacteria under in-vitro conditions.

Interactions of Proteus morganii, Proteus mirabilis, Proteus sp. Klebsiella oxaenae and Serratia marcescens isolated from vegetable salads of mass feeding systems with Salmonella ferlac (a new subgenus VI of Salmonella) isolated from a hostel cook's hands and lizard droppings were recorded following in-vitro nephelometric analysis. Nephelometric analysis revealed inhibition of S. ferlac by all the tested isolates from fifth hour of mixed culture interaction. K. oxaenae was the strong inhibitor.

Antibiosis↗