English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

SummaryBarley tissue with an acute systemic infection of barley stripe mosaic virus contained a large amount of unencapsidated virus RNA which was stable in extracts made in ribosome isolation buffer. The virus RNA in ribosome preparations sedimented in a broad band at 80S to 100S in sucrose gradients, which is less than the virion sedimentation rate of 180S to 200S. A protein of apparent Mr 60000, which sedimented with the virus RNA, was present in ribosome extracts from infected plants but absent from those from uninfected plants. The protein is probably a virus protein because its apparent molecular weight varied slightly with the strain of virus. The structure containing the Mr 60000 protein did not sediment in sucrose gradients in a compact zone as would be expected for a particle of uniform size. The Mr 60000 protein was present at a concentration equal to or slightly higher (up to 400 µg/g leaf tissue) than the unencapsidated virus RNA (up to 300 µg/g leaf tissue). Sedimentation results support the conclusion that the virus RNA and the Mr 60000 protein were combined in polydispersed nucleoprotein particles which may or may not have been attached to ribosomes or ribosome subunits. The Mr 60000 protein was not serologically related to the capsid protein. Gold-labelled antibodies to the Mr 60000 protein stained the cytoplasm in thin sections of infected cells but not that of uninfected cells. However, no distinct immunogold-labelled particle could be identified as the presumed nucleoprotein.

A Non-capsid Protein Associated with Unencapsidated Virus RNA in Barley Infected with Barley Stripe Mosaic Virus