Fig. 1

The morphologies of Pam1~Pam5 particles. a Podoviridae Pam1 possesses an icosahedral head of ~65 nm in diameter, in addition to a short tail of ~40 nm in length. Pam5, found by genome sequencing, has an indistinguishable morphology with Pam1. b Siphoviridae Pam2 adopts an icosahedral head of ~100 nm in diameter and a long but noncontractile tail of ~300 nm in length. c Myoviridae Pam3 comprises an icosahedral head with a diameter of ~68 nm, followed by an ~110-nm-long and contractile tail. d Siphoviridae Pam4 has an icosahedral head of ~63 nm in diameter and a long tail of ~110 nm in length. The scale bar is 100 nm