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  • 1
    Electronic Resource
    Electronic Resource
    rps10, unreported for plastid DNAs, is located on the cyanelle genome of Cyanophora paradoxa and is contranscribed with the str operon genes (1991)
    Springer
    Current genetics 19 (1991), S. 313-315 
    Details
    ISSN: 1432-0983
    Keywords: Cyanophora paradoxa ; Cyanelle ; rps10 ; str operon
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary rps10, encoding the plastid ribosomal protein S10, is a nuclear gene in higher plants and green algae, and is missing from the large ribosomal protein gene cluster of chlorophyll b-type plastids that contains components of the prokaryotic S10, spc and alpha operons. The cyanelle genome of Cyanophora paradoxa is shown to harbor rps10 as another specific feature of its organization. However, this novel plastid gene is not contiguous with the genes of the “S10” operon, but is adjacent to, and cotranscribed with, the str operon, a trait also found in archaebacteria.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00355061
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  • 2
    Electronic Resource
    Electronic Resource
    The cyanelle str operon from Cyanophora paradoxa: Sequence analysis and phylogenetic implications (1990)
    Springer
    Plant molecular biology 15 (1990), S. 561-573 
    Details
    ISSN: 1573-5028
    Keywords: cyanelle ; Cyanophora paradoxa ; plastid evolution ; str operon ; phylogenetic analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The str operon containing the genes for the ribosomal proteins S12 (rps12) and S7 (rps7) and for the elongation factors G (fus) and Tu (tufA) has been characterized for some cyanobacteria and chloroplasts from algae and higher plants. In the case of plastids a stepwise reduction. by one and two genes, respectively, has been observed due to gene transfer to the nuclear genome. The nucleotide sequence of the str operon on the cyanelle genome from Cyanophora paradoxa was determined as a first example for a chlorophyll b-less plastid. It comprises rps12, rps7 and tufA which are closely linked and not interrupted by introns. Transcript analysis revealed cotranscription of the two ribosomal protein genes whereas tufA gave rise to a monocistronic mRNA. Phylogenetic studies using these three different traits allowed an assessment of the position of Cyanophora paradoxa among oxygenic photoautotrophs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00017831
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