Fig. 5: Structure of the glue heterotriplex.
From: Cryo-EM structure of the varicella-zoster virus A-capsid
a Overview of the heterotriplex distribution within an ASU in the capsid. The penton and hexon capsomers are set transparent to highlight the locations of the heterotriplex (colored by chains) at different sites. b Enlarged view of the Tri1–Tri2 heterotriplex structure, colored by chains. The internal insertion arm of Tri1 is highlighted in yellow and the disordered N-terminal anchor is represented with dashed lines. c Interactions between the two Tri2 subunits within the heterotriplex. The interchain disulfide bond between the embracing arms is shown as spheres in the enlarged box. d Comparison of the different conformations of the two Tri2 subunits in a heterotriplex. e–g Interactions between the heterotriplex (surface model) and capsomers (cartoon model).
