FIG 7.

(A) Arrangement of the tail tip genes in the siphophages T5, λ, and SPP1. Genes or part of them predicted to encode the same functions are depicted in the same color: TMP, red; Dit, orange; BHP, yellow; central straight fiber, green; RBP, cyan; LTF or Stf side fibers, violet. The proteins L, K, and I of λ (beige) are known to be part of the tail tip complex, but their location is unknown. Genes 22, 23, 23.1, 24, and 24.1 of SPP1, whose function and location are unknown, might encode proteins of the tail tip distal end. (B) Schematic representation of T5 tail architecture based on the description of its structural proteins.