Fig. 3: Superimposition of all the twelve gp20 subunits within the portal assembly.
From: Structural morphing in a symmetry-mismatched viral vertex
a The gp20 subunits. b N-terminal region of gp20 subunits. c Hairpin Arg185-Glu204 of gp20 subunits. d Asp209-Lys227 loop of gp20 subunits.
