Fig. 1.

Arrangement of photosynthesis genes in three Prochlorococcus phages. (A) Podovirus P-SSP7. (B) Myovirus P-SSM2. (C) Myovirus P-SSM4. Black bars indicate genes related to photosynthesis, gray bars indicate genes commonly found in phage, and white bars indicate predicted ORFs of unknown function. Genes and their protein designations are as follows: psbA, D1; psbD, D2; hli, HLIP; petE, plastocyanin; petF, ferredoxin; 8, T7-like head-to-tail connector; 9, T7-like capsid assembly protein; 10, T7-like capsid protein; nrdB, T4-like ribonucleotide reductase β-subunit; 49, T4-like restriction endonuclease VII; and td, T4-like thymidylate synthetase.