title: Induction of L-phase variant from protoplast of Staphylococcus aureus.
abstract: Protoplasts of Staphylococcus aureus 209P and Cowan 1 were induced by treatment with lysostaphin. These protoplasts were sensitive to detergent, a low concentration of sodium chloride and low temperature. Almost all protoplast cells spread on CLYS agar medium (casein hydrolysate, yeast extract, Na-lactate, and NaCl) formed typical L-form colonies. Horse serum (0.25%) and Mg2+ (100 mM) are essential factors for formation of the L-form colonies of 209P. In the case of Cowan 1, Mg2+ was not required. The active factor(s) in horse serum was heat-resistant and protein in nature.
mesh_terms: D003470:Culture Media; D008248:Lysostaphin / Q000494:pharmacology; D013211:Staphylococcus aureus / Q000166:cytology* / Q000187:drug effects
chemical_list: D003470:Culture Media; D008248:Lysostaphin