Figure 2: Major capsid protein gp39.
From: Protruding knob-like proteins violate local symmetries in an icosahedral marine virus

(a) De novo backbone model of gp39 fit in the corresponding map density (grey) shows an HK-97-like fold; the residues are coloured blue to red from the N- to the C-termini. (b) Backbone model of the seven chains A–G of gp39 in one asymmetric unit forming the T=7 icosahedral capsid.