Download MendeleyStructure of the turnip yellows virus particles.
Lai-Kee-Him, J., Trapani, S., Boissinot, S., Reinbold, C., Fallet, C., Ancelin, A., Lecorre, F., Hoh, F., Ziegler-Graff, V., Brault, V., Bron, P.(2025) Virology 607: 110514-110514
- PubMed: 40179450
- DOI: https://doi.org/10.1016/j.virol.2025.110514
- Primary Citation of Related Structures:
9FHP, 9Q8J - PubMed Abstract:
Turnip yellows virus (TuYV) is a plant virus infecting important crops such as oilseed rape. TuYV is phloem-restricted and transmitted by aphids. The capsid contains two subunit types: the major capsid protein (CP) and a minor component (RTP∗) which arises from the C-terminal cleavage of a readthrough product (RTP). RTP∗ contains the CP sequence fused with a structured domain, denoted N RTD, which is a key determinant of virus transmission. Though both CP and RTP∗ are involved in virus movement and aphid transmission, how RTP∗ is incorporated into the capsid is poorly understood. We present here the structural characterisation, by immunogold labelling and 3D cryo-EM, of the wild-type TuYV and a mutant whose capsid contains the CP only. We show that incorporation of RTP∗ does not impair the capsid structure, and the N RTD does not adopt well-defined positions at the capsid surface. The number of incorporated RTP∗s suggests a random insertion.
- Centre de Biologie Structurale (CBS), Univ Montpellier, CNRS, INSERM, Montpellier, France. Electronic address: josephine.laikeehim@cbs.cnrs.fr.
Organizational Affiliation:
