Table 1 Comparison of structural proteins in bacteriophage DT57C and bacteriophage T5 systems
Function (synonym) | Functional name | Protein band (pb) | DT57C gene product (NC_027356) | T5 homolog(NC_005859) | Degree of DT57C-T5 identity/similarity | Matching regions |
|---|---|---|---|---|---|---|
Main capsid protein | MCP | pb8 | gp121 | gp149 | 95% / 97% | H97-like MCP fold (61-442) |
Head decorating protein | DCP | pb10 | gp123 | gp151 | 62% / 63% | Hexon-binding (1–64); Ig-like (65-142) |
Portal protein | PrtP | pb7 | gp124 | gp152 | 98% / 99% | Wing (1-175, 289-326); Stem (176-199, 256-288); Clip (200-255); Crown (327-378) |
Head completion protein | HCP | – | gp120 | gp148 | 97% / 99% | DI (1-43, 112-170); DII (44-111) |
Tail completion protein | TCP | – | gp119 | gp147 | 93% / 98% | DI (2-155) |
Tail tube protein(main tail protein) | TTP | pb6 | gp117 | gp145 | 85% / 92% | DI (3-373), Ig-like (376-468) |
Tape measure protein | TMP | pb2 | gp113 | gp140 | 67% / 78% | C-terminal coiled-coil (1192-1227) |
Tail tip middle protein (tip middle protein) | TTMP | – | gp116 | gp144 | 72% / 85% | DI (1-71, 100-125, 134-164); DII (85-99, 126-133, 165-197) |
Distal tail protein | Dit | pb9 | gp112 | gp139 | 82% / 91% | DI (85-99, 126-133, 165-297); DII (334-378) |
Tail tip hub protein | TTHP | pb3 | gp111 | gp138 | 84% / 93% | DI (1-163, 550-590, 658-711); DII (164-549, 591-657, 712-736); Ig-like DIII (737-949) |
Central tail fiber protein (straight fiber) | CFP | pb4 | gp110 | gp137 | 77% / 87% | Ig-like DI (1-326); DII (327-461); DIII (462-685) |
Receptor binding protein | RBP | pb5 | gp128 | gp157 | 31% / 43% | - |
Lateral tail fiber protein A | LtfA | (pb1 in T5 only) | gp108, LtfA | gp133, Ltfa | 22% / 35% | - |
Lateral tail fiber protein B | LtfB | – | gp107 | – | – | - |
Lateral tail fiber assembly protein | LtfC | – | gp109 | gp135, 136b | 75% / 88% | DI (1-140) |
