Fig. 6: The structure of L-BC open particle.
From: Structures of L-BC virus and its open particle provide insight into Totivirus capsid assembly
a, b Cryo-EM densities of open (a) and complete (b) L-BC particles rainbow-colored according to the distance of the surface from the particle center. Selected capsid proteins bordering the opening are labeled. Scale bar 200 Å. c Displacement of capsid proteins forming the edge of the opening. The cryo-EM reconstruction of the complete particle is shown as a gray semi-transparent surface. The density of a decamer of capsid proteins was removed from the complete particle to indicate the position of the opening. The colored surfaces show positions of the three subunits that form the edge of the hole in the open particle (the A subunit is in blue, B subunits in red). The indicated distances show the relative displacements of the corresponding subunits in the complete and open particles. The displayed densities were calculated from PDB structures fitted into the cryo-EM reconstruction of the open particle. Scale bar 50 Å. The map is contoured at 0.8 sigma for A and 2.0 sigma for B and C.
