Turnip Yellow Mosaic Virus Structure

The structure is consistent with models based on low resolution X. TYMV is a positive strand RNA virus of the alphavirus-like supergroup.

Left Atomic Rendering Of A Virion Of Turnip Yellow Mosaic Virus Download Scientific Diagram

Difference electron density maps based on structure factor amplitudes and experimental phases from crystals of wild-type turnip yellow mosaic virus and those of empty capsids prepared by freezethawing show a large portion of the encapsidated RNA to have an icosahedral distribution.

Turnip yellow mosaic virus structure. Turnip yellow mosaic virus was first isolated and crystaUised by MARKHAM AND SMITH. Turnip yellow mosaic virus TYMV contains a tRNA-like structure as an integral part of its genome. Submit a new modelling project.

Turnip yellow mosaic virus TYMV is the type species of the genus Tymovirus family Tymoviridae. Turnip yellow mosaic virus TYMV the type member of the Tymovirus genus of single-stranded RNA viruses utilizes 180 copies of its 20 kDa coat protein CP to assemble into a 2830 nm T 3 icosahedral virion Dreher 2004. Structure of turnip yellow mosaic virus Nature.

The structure of turnip yellow mosaic virus TYMV has been solved to 32 A resolution and an R-value of 187. A brief summary of this work has already been published4. The tRNA-like structure TLS at the 3 end of the turnip yellow mosaic virus genome was replaced with heterologous tRNA-like elements and with a polyA tail in order to assess its role.

The 3 terminal nucleotide of turnip yellow mosaic virus TYMV RNA 23-25 S may be esterified with valine in the presence of ATP and an enzyme preparation from Escherichia coli. The structure is consistent with models based on low resolution X-ray and electron microscopy studies with pentameric and hexameric protein aggregates protruding from the surface and forming deep valleys at the quasi three-fold axes. The predicted structure was used to design recombinants of turnip yellow mosaic virus TYMV in which selected parts of its VP were replaced with homologous regions of belladonna mottle virus BeMV in a cDNA clone encoding the genome of TYMV.

Structure of turnip yellow mosaic virus. We previously reported the crystal structures of such a PRODUB from Turnip yellow mosaic virus TYMV and of its complex with one of its PRO substrates. Turnip yellow mosaic virus.

The tRNA-like structure at the 3terminus of turnip yellow mosaic virus RNA. This structure is located at the extreme 3 end of the viral RNA and is the acceptor of. The tRNA-like structure at the 3 end of turnip yellow mosaic virus TYMV RNA was studied in order to determine the role of this structure in the initiation of minus-strand synthesis in vitro.

Turnip yellow mosaic virus TYMV is one of the many plant viruses with a genomic RNA that has a 5-cap but lacks a polyA tail. Replacement with the valylatable TLSs from two closely related tymoviruses resulted in infectious viruses. IT is known from examination in the electron microscope that turnip yellow mosaic virus1 consists in the dry state of individual particles of spherical form and about 22 mµ in diameter.

The 3 noncoding region is a 109-nt sequence that comprises a tRNA-like structure TLS and an upstream pseudoknot UPSK. The 3 terminal nucleotide of turnip yellow mosaic virus TYMV RNA 23-25 S may be esterified with valine in the presence of ATP and an enzyme preparation from Escherichia coli. Turnip mosaic a rod-shaped virus may cause similar macroscopic symptoms in turnip and Chinese cabbage but does not cause the chloroplast abnormalities characteristic of turnip yellow mosaic virus infection.

Turnip crinkle and turnip rosette viruses are transmitted mechanically and by flea beetles and have similar stability in vitro. Deletions in the 5-to-3 direction up to the pseudoknot structure did not result in a decrease of transcription efficiency. The structure of turnip yellow mosaic virus TYMV has been solved to 32 Å resolution and an R -value of 187.

View protein in. It has a molecular weight of about 5 million contains about 4o of ribo- nucleic acid and is approximately spherical in. The nucleotide composition near the valine-binding site is different for TYMV RNA and tRNAVal from cabbage as shown by comparison of the valine adducts of nucleotides labeled with radioactive valine in T1.

Structure of turnip yellow mosaic virus. Differences and similarities with canonical tRNA. For instance cysteine proteases PRO frequently double up as ubiquitin hydrolases DUB thus interfering with cellular processes critical for virus replication.

Authors A KLUG J T FINCH R E FRANKLIN. Family and domain databases.

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Left Atomic Rendering Of A Virion Of Turnip Yellow Mosaic Virus Download Scientific Diagram

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