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At least 667 records · Page 37Linked to original sources
PubMed1981

Lysozyme activity of bacteriophage T4 ghosts.

Bacteriophage T4 ghosts were found to possess lysozyme (mucopeptide N-acetylmuramoylhydrolase, EC 3.2.1.17) activity. This enzyme is probably responsible for the lysis from without, observed at high multiplicity of infection, a process independent of the presence of the e gene product which is also a lysozyme. The ghost lysozyme and e lysozyme differed with respect to their requirements for maximal catalytic activity and to some extent in substrate specificity. The ghost lysozyme was released from phage particle by the action of Triton X-100.

Bacteriolysis↗
PubMed1980

Alteration in phospholipid composition of Staphylococcus aureus during formation of autoplast.

The phospholipid composition of autoplasts (protoplasts made by autolysis of Staphylococcus aureus 209P was examined. The autoplasts were prepared by incubation of 209P cells in 1.2 M sucrose--0.33 M acetate buffer (pH 5.8). Cardiolipin comprised nearly half the total phospholipid in these autoplasts. Autoplasts had a lower phosphatidylglycerol content than intact cells but similar lysylphosphatidylglycerol content. The increase in cardiolipin content during release of autoplasts was not affected by pH or temperature. The result indicates that removal of the cell wall caused the increase in cardiolipin content. The total amount of phospholipids increased slightly during autoplast formation, but there was no significant increase in fatty acids or diglycerides. The changes of phospholipid composition during formation of the autoplast was due to de novo synthesis of cardiolipin from phosphatidylglycerol.

Bacteriolysis↗