Figure 1 (Left) X-ray crystallography-based structure of the virion of Enterobacteria phage PRD1 (pseudo T=25) viewed down two-fold axis of symmetry. (Middle) Schematic picture of the virion. (Right) Negative stain electron micrograph of phage PRD1 particles. The inset shows a particle with a protruding membranous tail-like structure. The bar represents 100 nm.
Figure 2 The genome of Enterobacteria phage PRD1 (PRD1) indicating the organization of genes and promoters (P) and their reading direction. Gene and protein nomenclature are correlated so that each protein has the same number (Arabic numeral) as the gene (Roman numeral). ORFs with no confirmed protein product are indicated by lower case letters. (Top) Order of genes; genes XIX and XII are on one strand and all other genes are on the other strand. The different colors indicate the ORFs (yellow) and the genes coding structural proteins (blue), nonstructural proteins (orange) and proteins involved in lysis (green). (Bottom) Promoters (P), terminators (lollipops) and operons (O) and their reading directions; E=early, L=late.
Figure 3 Diagram of the life cycle of Enterobacteria phage PRD1; for details see the text.