FIG 2.

Map of T5 morphogenesis genes. T5 late genes (positions 73825 to 102307 in T5st0 genome, GenBank accession number AY692264) are transcribed from five putative operons encoded by the minus strand of the DNA (1, 76). The annotation of the morphogenesis genes was updated from the combination of genome sequencing data with bioinformatics studies and analysis of the protein composition of T5 entire particles, tails, and heads. Assigned functions issued from this study are noted in bold. The tail proteins, head proteins, and packaging proteins are colored red, blue, and green, respectively. Nonstructural assembly proteins or proteins of unknown functions are colored gray. For clarification, this map is presented in the usual direction from left to right, but it is reversed from the 5′→3′ sequence of the T5 genome. Black arrows indicate the T5 late promoters: P-39, P-40, and P-42 are putative promoters, while P-J5 and P-G25 are identified promoters (28).