A comparison of the patterns of extracellular proteins produced by the high alpha-toxin-secreting organism Staphylococcus aureus (Wood 46) during aerobic and anaerobic growth.
Staphylococcus aureus (Wood 46) was grown aerobically and anaerobically in supplemented 3% (w/v) Tryptone Soya Broth medium for 24 h at 37 degrees C. Although the bacterial density achieved was 9 times higher in the aerobic culture, the exoprotein produced per unit of bacterial dry weight was only 1.4 times higher than in the anaerobic culture. However, the SDS-PAGE patterns of extracellular proteins were quite different: the aerobic products occurred almost exclusively in the mol. wt range 15-30000 compared with 30-60000 for those produced anaerobically. The only major component common to both preparations was alpha-toxin which accounted for 2.4 times more of the total exoprotein under aerobic than under anaerobic conditions.
D000332:Aerobiosis; D000693:Anaerobiosis; D001426:Bacterial Proteins / Q000096:biosynthesis*; D001427:Bacterial Toxins / Q000096:biosynthesis; D004591:Electrophoresis, Polyacrylamide Gel; D006460:Hemolysin Proteins; D013211:Staphylococcus aureus / Q000254:growth & development*
D001426:Bacterial Proteins; D001427:Bacterial Toxins; D006460:Hemolysin Proteins; C021091:staphylococcal alpha-toxin