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  • 1
    Electronic Resource
    Electronic Resource
    Molecular Evolution and Phylogeny of Satellite RNA Associated with Bamboo Mosaic Potexvirus (1997)
    Springer
    Journal of molecular evolution 44 (1997), S. 207 -213 
    Details
    ISSN: 1432-1432
    Keywords: Key words: Bamboo mosaic virus — Satellite RNA — Satellite-encoded protein — Sequence variation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract. Satellite RNA of bamboo mosaic potexvirus (satBaMV) is a linear RNA molecule which encodes a 20-kDa nonstructural protein. Sequences of seven different satBaMV isolates from bamboo hosts in three genera showed 0.7% to 7.5% base variation which spanned the whole RNA molecule. However, the putative 20-kDa open reading frame was all preserved in these isolates. The phylogenetic relationship based on the nucleotide sequence did not show particular grouping of satBaMV from the host in one genus; neither was the grouping of satBaMV evident by location of sampling. Putative secondary structures of the 3′ untranslated regions showed a basic pattern with conserved hexanucleotides (ACCUAA) and polyadenylation signal (AAUAAA) located in the loop regions. Although the satBaMV-encoded 20-kDa protein is a nonstructural protein, its predicted secondary structure contains eight-stranded β-sheets which may form ``jelly-roll'' structure similar to that found in capsid protein encoded by satellite virus of panicum mosaic virus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00006137
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    A Defective RNA Associated with Bamboo Mosaic Virus and the Possible Common Mechanisms for RNA Recombination in Potexviruses (1999)
    Springer
    Virus genes 18 (1999), S. 121-128 
    Details
    ISSN: 1572-994X
    Keywords: Bamboo mosaic potexvirus ; defective RNA ; RNA combination
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A naturally occurring 1.1 kb RNA was isolated from purified virions of bamboo mosaic potexvirus isolate S (BaMV-S). This RNA is a defective RNA (D RNA) derived from a single internal deletion of the BaMV genome. A cDNA clone representing the complete nucleotide sequence of the BaMV-S D RNA was generated and its nucleotide sequence was determined. The BaMV D cDNA is 1015 nts in length [excluding the poly(A) tail] and consists of two regions corresponding to 867 nts of the 5′ terminus and 148 nts of the 3′ terminus of the BaMV genomic RNA. BaMV D cDNA contains a single open reading frame (ORF) encoding a putative 29.7 kDa protein comprised of a fusion of the first 258 amino acids of BaMV ORF 1 and the last 2 amino acids of coat protein. The coding capacity of D RNA was verified by in vitro translation of native BaMV-S D RNA and of 1.1 kb RNA transcribed in vitro from the full-length D cDNA. BaMV D RNA can be reproducibly generated by serial passages of BaMV-S in Nicotiana benthamiana and is the first D RNA in the potexvirus group shown to be generated de novo. Alignments of sequences surrounding the 5′ and 3′ junction borders of reported potexvirus D RNAs reveal a 65.2–84.6% sequence identity, suggesting that common mechanisms for viral RNA recombination are involved in the generation of potexvirus D RNAs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008008400653
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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