Terminase small subunit TERM_BPP22 3 162 Involved in the phage DNA-packaging initiation process. Packaging of DNA occurs by cutting headful-sized fragments in a sequential manner from a DNA concatemer. To initiate this process, protein gp3 recognizes a signal sequence: the pac site. DNA-packaging protein gp3 MAAPKGNRFWEARSSHGRNPKFESPEALWAACCEYFEWVEANPLWEMKAFSYQGEVIQEPIAKMRAMTITGLTLFIDVTLETWRTYRLREDLSEVVTRAEQVIYDQKFSGAAADLLNANIIARDLGLKEQSQVEDVTPDKGDRDKRRSRIKELFNRGTGRDS