This protein family includes Major capsid protein from Bacteriophage T7 (Gp10A) and similar proteins from tailed bacteriophages and bacterial prophages. Gp10A subunits adopt an HK97-like conformation to form the viral shell [2].

1: Structural changes in a marine podovirus associated with release of its genome into Prochlorococcus. Liu X, Zhang Q, Murata K, Baker ML, Sullivan MB, Fu C, Dougherty MT, Schmid MF, Osburne MS, Chisholm SW, Chiu W; Nat Struct Mol Biol. 2010;17:830-836. PMID:20543830

2: Molecular rearrangements involved in the capsid shell maturation of bacteriophage T7. Ionel A, Velazquez-Muriel JA, Luque D, Cuervo A, Caston JR, Valpuesta JM, Martin-Benito J, Carrascosa JL; J Biol Chem. 2011;286:234-242. PMID:20962334

3: Protruding knob-like proteins violate local symmetries in an icosahedral marine virus. Gipson P, Baker ML, Raytcheva D, Haase-Pettingell C, Piret J, King JA, Chiu W; Nat Commun. 2014;5:4278. PMID:24985522