Roseophage SIO1

• First marine phage reported (Rohwer et al., 2000).
• Infects Roseobacter.
• Said to be T7-like based on DNA polymerase, primase, and endoDNAseI being more similar to T7 genes than other homologues.
• Did not have T7-like ends or structural genes reported.
• 2 major converging transcription units.
• Did not have RNA polymerase.
• Comparison with VpV262: