Living with an imperfect cell wall: compensation of femAB inactivation in Staphylococcus aureus

Increased overall antibiotic susceptibility in Staphylococcus aureus femAB null mutants.

The staphylococcal pentaglycine side chain of the peptidoglycan is reduced to one glycine in femAB null mutants. This is associated with increased susceptibility to methicillin and to a whole range of unrelated antibiotics as well. Genetic evidence suggests that femAB null mutants are only viable because of a compensatory mutation in an unlinked site.

Ultra structural characteristics of methicillin resistant Staphylococcus aureus cell wall after affecting with lytic bacteriophages using atomic force microscopy

Objective(s): During the last years with increasing resistant bacteria to the most antibiotics bacteriophages are suggested as appropriate treatment option. To investigate lytic activity of bacteriophages there are indirect microbial procedures and direct methods. The present study to complement microbial procedures and investigate ultra-structural characteristics of infection bacterium-phage u...

Cell-wall deficiencies in L-forms of Staphylococcus aureus.

Ristocetins, inhibitors of cell wall synthesis in Staphylococcus aureus.

Inhibition of bacterial cell wall synthesis is an important mechanism of action of antibacterial agents. Bacterial cell walls are chemically and morphologically distinct from any structures found in animal cells. Inhibition of synthesis of these structures results, therefore, in selective toxicity. The antibacterial action of penicillins (1, 2), n-cycloserine (3, 4), bacitracin (5), and novobio...

Incorporation of Hydroxylysine into the Cell Wall and a Cell-wall Precursor in Staphylococcus Aureus.

Smith, W. Grady (University of Minnesota, St. Paul), Daniel P. Gilboe, and L. M. Henderson. Incorporation of hydroxylysine into the cell wall and a cell-wall precursor in Staphylococcus aureus. J. Bacteriol. 89:136-140. 1965.-Recent work has shown that hydroxylysine can substitute for lysine in cell-wall synthesis of Streptococcus faecalis, apparently becoming incorporated into cell-wall mucope...