Comparison of the Lipid-containing Bacteriophages PRD1, PR3, PR4, PR5 and L17

Abstract
Five broad host range lipid-containing bacteriophages PRD1, PR3, PR4, PR5 and L17 isolated from different parts of the world were compared using biological and structural criteria. Virus morphology and genome sizes appeared to be identical. These viruses could be distinguished by restriction endonuclease mapping and by their structural protein patterns in sodium dodecyl sulfate gel electrophoresis. The viruses form a very close group of lipid-containing bacteriophages. PRD1 is suggested as a model organism for this group and the group could possibly be called the PRD1 phage group.