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TitleStructure of the turnip yellows virus particles.
Journal, issue, pagesVirology, Vol. 607, Page 110514, Year 2025
Publish dateMar 26, 2025
AuthorsJoséphine Lai-Kee-Him / Stefano Trapani / Sylvaine Boissinot / Catherine Reinbold / Chloé Fallet / Aurélie Ancelin / François Lecorre / François Hoh / Véronique Ziegler-Graff / Véronique Brault / Patrick Bron /
PubMed AbstractTurnip 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 ...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 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 RTD does not adopt well-defined positions at the capsid surface. The number of incorporated RTP∗s suggests a random insertion.
External linksVirology / PubMed:40179450
MethodsEM (single particle)
Resolution3.47 - 4.08 Å
Structure data

10003

9fhp

EMDB-10003, PDB-9fhp:
CryoEM structure of wild-type Turnip Yellows Virus
Method: EM (single particle) / Resolution: 4.08 Å

PDB-9q8j:
CryoEM structure of modified Turnip Yellows Virus devoid of minor capsid protein readthrough domain
Method: ELECTRON MICROSCOPY / Resolution: 3.47 Å

Source
  • Beet western yellows virus-FL1
  • turnip yellows virus
KeywordsVIRUS / read-through protein

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