Table S1.
List of the baseplate proteins, their position and interacting protein partners in the tail and their putative role
| Protein | No. of residue | Oligomeric state in solution | Position and interacting protein partner(s) | Putative role |
| gp5 | 575 | Trimer | Hub | Lysis of host cell membrane |
| gp5.4, gp27 | ||||
| gp5.4 | 97 | Monomer | Distal end of the tail | Puncturing of host cell membrane |
| gp5 | ||||
| gp6 | 660 | Dimer | Wedge | Inter wedge interaction and wedge to hub interaction |
| gp7, gp8, gp25, gp27, gp53 | ||||
| gp7 | 1032 | Monomer | Wedge | Connecting the wedge proteins |
| gp6, gp8, gp9, gp10, gp53 | ||||
| gp8 | 334 | Dimer | Wedge | Raising the baseplate periphery |
| gp6, gp7, gp10 | ||||
| gp9 | 288 | Trimer | Wedge | Attachment of LTF |
| gp7, LTF | ||||
| gp10 | 602 | Trimer | Wedge | Attachment of STF |
| gp7, gp8, gp11, gp12 | ||||
| gp11 | 219 | Trimer | Baseplate periphery | Bending and attachment of STF |
| gp10, gp12 | ||||
| gp12 (STF) | 527 | Trimer | Baseplate periphery | Irreversible binding to host cell receptor |
| gp10, gp11 | ||||
| gp25 | 132 | Monomer | Wedge | Initiation of the tail sheath polymerization |
| gp6, gp18, gp48–gp54, gp53 | ||||
| gp27 | 391 | Trimer | Hub | Wedge to hub interaction |
| gp5, gp6, gp48–gp54 | ||||
| gp29 | 590 | ND | Hub | Tail length determination |
| gp3, gp19, gp48–gp54 | ||||
| gp48 | 364 | ND | Hub | Termination of baseplate assembly |
| gp19, gp25, gp27, gp29, gp54 | ||||
| gp53 | 196 | Monomer | Wedge | Holding of inter wedge junction |
| gp6, gp7, gp25 | ||||
| gp54 | 320 | ND | Hub | Initiation of the tail tube polymerization |
| gp19, gp27, gp29, gp48 |
LTF, long-tail fiber; STF, short tail fiber; ND, not determined.