A [auth PT], B [auth PM], C [auth PN], D [auth PO], E [auth PP], F [auth PQ], G [auth PR], H [auth PS], I [auth PU], J [auth PV], K [auth PW], L [auth PX] | HK97 gp6-like/SPP1 gp15-like head-tail connector | | - | - |
AA [auth AO], AB [auth SW], AC [auth Sw], BA [auth AP], BB [auth SX], BC [auth Sx], CA [auth AQ], CB [auth SY], CC [auth Sy], DA [auth AR], DB [auth SZ], DC [auth Sz], EA [auth SB], EB [auth Sa], EC [auth S1], FA [auth SA], FB [auth Sb], FC [auth S2], GA [auth SC], GB [auth Sc], HA [auth SD], HB [auth Sd], IA [auth SE], IB [auth Se], JA [auth SF], JB [auth Sf], KA [auth SG], KB [auth Sg], LA [auth SH], LB [auth Sh], MA [auth SI], MB [auth Si], NA [auth SJ], NB [auth Sj], OA [auth SK], OB [auth Sk], PA [auth SL], PB [auth Sl], QA [auth SM], QB [auth Sm], RA [auth SN], RB [auth Sn], S [auth B1], SA [auth SO], SB [auth So], T [auth B2], TA [auth SP], TB [auth Sp], U [auth B3], UA [auth SQ], UB [auth Sq], V [auth B4], VA [auth SR], VB [auth Sr], W [auth B5], WA [auth SS], WB [auth Ss], X [auth B6], XA [auth ST], XB [auth St], Y [auth AM], YA [auth SU], YB [auth Su], Z [auth AN], ZA [auth SV], ZB [auth Sv] | Tail tube protein | - | - | - |
GC [auth BA], HC [auth BB], IC [auth BC] | Baseplate to tube adapter protein gp41 | - | - | - |
| SPP1 gp17-like tail completion protein | - | - | - |