(a) Disassembly
time-series plot that depicts the fraction of remaining hexamers and
pentamers (with respect to the initial size of the mature capsid core)
for the five listed systems as a function of MD time step. All four
of the eccentric cases exhibit spontaneous disassembly, which appear
to be initiated at sites with large pentamer density. Molecular snapshots
of the protein lattice for the 0.075 mM case (cyan line in (a)) at
the indicated points are shown; green, red, and blue capsomers indicate
hexamers, pentamers, and incomplete capsomers, respectively. (b) Molecular
snapshots from each trajectory at the indicated MD time step (τ
[×106]) are shown. The inhibitor-bound TODs are represented
as gray capsomers. This data suggests that capsid inhibitors promote
the formation of “leaky” mature cores that spontaneously
open at regions of high curvature (or high pentamer density), and
represents one failure mechanism that suppresses infectivity.