Full Download A conserved region in the prM protein is a critical determinant in the assembly of flavivirus particles. - K Yoshii Affiliation: Laboratory of Public Health, Graduate School of Veterinary Medicine, Hokkaido University, Kita-18 Nishi-9, Kita-ku, Sapporo, Hokkaido 060-0818, Japan. kyoshii@vetmed.hokudai.ac.jp; M Igarashi; O Ichii; K Yokozawa; K Ito; All authors | PDF Online

Read Online A conserved region in the prM protein is a critical determinant in the assembly of flavivirus particles. - K Yoshii Affiliation: Laboratory of Public Health, Graduate School of Veterinary Medicine, Hokkaido University, Kita-18 Nishi-9, Kita-ku, Sapporo, Hokkaido 060-0818, Japan. kyoshii@vetmed.hokudai.ac.jp; M Igarashi; O Ichii; K Yokozawa; K Ito; All authors file in ePub

Document Type: Article All Authors / Contributors: K Yoshii Affiliation: Laboratory of Public Health, Graduate School of Veterinary Medicine, Hokkaido University, Kita-18 Nishi-9, Kita-ku, Sapporo, Hokkaido 060-0818, Japan. kyoshii@vetmed.hokudai.ac.jp; M Igarashi; O Ichii; K Yokozawa; K Ito; H Kariwa; I Takashima ISSN:0022-1317 Language Note: English Unique Identifier: 776343023 Awards: Abstract: Flaviviruses are assembled to bud into the lumen of the endoplasmic reticulum (ER) and are secreted through the vesicle transport pathway, but the details of the molecular mechanism of virion assembly remain largely unknown. In this study, a highly conserved region in the prM protein was identified among flaviviruses. In the subviral particle (SP) system of tick-borne encephalitis virus (TBEV) and Japanese encephalitis virus, secretion of SPs was impaired by a mutation in the conserved region in the prM protein. Viral proteins were sparse in the Golgi complex and accumulated in the ER. Ultrastructural analysis revealed that long filamentous structures, rather than spherical SPs, were observed in the lumen of the ER as a result of the mutation. The production of infectious virions derived from infectious cDNA of TBEV was also reduced by mutations in the conserved region. Molecular modelling analysis suggested that the conserved region is important for the association of prM-envelope protein heterodimers in the formation of a spike of immature virion. These results are the first demonstration that the conserved region in the prM protein is a molecular determinant for the flavivirus assembly process.

Title : A conserved region in the prM protein is a critical determinant in the assembly of flavivirus particles.
Author : K Yoshii Affiliation: Laboratory of Public Health, Graduate School of Veterinary Medicine, Hokkaido University, Kita-18 Nishi-9, Kita-ku, Sapporo, Hokkaido 060-0818, Japan. kyoshii@vetmed.hokudai.ac.jp; M Igarashi; O Ichii; K Yokozawa; K Ito; All authors
Language : en
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Uploaded : Apr 12, 2021

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