Ab initio calculations of a chemical shift at the HF/6-31G(d,p)//B3LYP/6-31G(d) level on a model system representing the interaction between Zn++ and the thiazoline ring of Bacitracin A is used for studying the binding mode between the metal ion and the ring system. The simulations show that a reinterpretation of the shift effects seen in the NMR spectra of the zinc–Bacitracin A complex may be ...

The reliability of the bacitracin inhibition test to differentiate between 125 Lancefield group A and 122 non-group A beta-haemolytic streptococci was studied. Bacitracin discs containing 0-02, 0-04, or 0-1 international units and the conditions recommended by both the Association of Clinical Pathologists and the Federal Drug Administration for routine sensitivity testing were used. The results...

1. Abd Elhalim H.S., Attia F.A.M., Hanafy A.M., Khalil H.A., 2007. Effects of probiotic (Biogen) and zinc bacitracin supplementation on laying hen performance, some blood parameters egg quality. Agric. Res. J. 7, 11?19. Google Scholar

Cover photo: Mutans streptococci on mitis salivarius bacitracin agar (MSB). To the left, colony representing Streptococcus sobrinus. In the middle and to the right, colonies representing Streptococcus mutans.

Antibiotic-mediated changes to the intestinal microbiome have largely been assumed to be the basis of antibiotic-induced neurophysiological and behavioral changes. However, relatively little research has addressed whether antibiotics act directly on the host nervous system to produce these changes. We aimed to identify whether acute exposure of the gastrointestinal tract to antibiotics directly...

Aim: To determine the effects subjecting Bacillus subtilis to different cultural conditions will have on crude Bacitracin produced in inhibiting growth of known susceptible organisms. Method: be a bacitracin producer was isolated from soil and identified. The isolate used produce under various culture with peptone water serving as basal fermentation medium. resultant checked for its antimicrobi...

The inhibition of sporulation septation (stage II) in Bacillus megaterium was shown with penicillin, d-cycloserine, bacitracin, vancomycin, novobiocin, chloromycetin, streptomycin, mitomycin C, and nalidixic acid.

Clostridium perfringens is an opportunistic pathogen that can cause food poisoning in humans and various enterotoxemia in animal species. Very little is known on the biofilm of C. perfringens and its exposure to subminimal inhibitory concentrations of antimicrobials. This study was undertaken to address these issues. Most of the C. perfringens human and animal isolates tested in this study were...