Simulation studies of a phenomenological model for elongated virus capsid formation.
We study a phenomenological model in which the simulated packing of hard, attractive spheres on a prolate spheroid surface with convexity constraints produces structures identical to those of prolate virus capsid structures. Our simulation approach combines the traditional Monte Carlo method with a modified method of random sampling on an ellipsoidal surface and a convex hull searching algorithm. Using this approach we identify the minimum physical requirements for nonicosahedral, elongated virus capsids, such as two aberrant flock house virus particles and the prolate prohead of bacteriophage phi29 , and discuss the implication of our simulation results in the context of recent experimental findings. Our predicted structures may also be experimentally realized by the evaporation-driven assembly of colloidal spheres under appropriate conditions.
Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109-2136, USA.
Ting
T
Chen
Sharon C
SC
Glotzer
D002213:Capsid / Q000737:chemistry* / Q000502:physiology* / Q000648:ultrastructure; D003198:Computer Simulation; D008954:Models, Biological; D008956:Models, Chemical; D008958:Models, Molecular; D019065:Virus Assembly / Q000502:physiology*