Download MendeleyCrystal structure of the potato leafroll virus coat protein and implications for viral assembly.
Adams, M.C., Schiltz, C.J., Heck, M.L., Chappie, J.S.(2021) J Struct Biol 214: 107811-107811
- PubMed: 34813955
- DOI: https://doi.org/10.1016/j.jsb.2021.107811
- Primary Citation of Related Structures:
7RLM - PubMed Abstract:
Luteoviruses, poleroviruses, and enamoviruses are insect-transmitted, agricultural pathogens that infect a wide array of plants, including staple food crops. Previous cryo-electron microscopy studies of virus-like particles show that luteovirid viral capsids are built from a structural coat protein that organizes with T = 3 icosahedral symmetry. Here, we present the crystal structure of a truncated version of the coat protein monomer from potato leafroll virus at 1.80-Å resolution. In the crystal lattice, monomers pack into flat sheets that preserve the two-fold and three-fold axes of icosahedral symmetry and show minimal structural deviations when compared to the full-length subunits of the assembled virus-like particle. These observations have important implications in viral assembly and maturation and suggest that the CP N-terminus and its interactions with RNA play an important role in generating capsid curvature.
Organizational Affiliation:
Department of Molecular Medicine, Cornell University, Ithaca, NY 14853, USA.
