Ferredoxin-NADP+ Oxidoreductase of C. paradoxa Nucleus Encoded, but CyanobacterialGene Transfer from Symbiont to Host, an Evolutionary Mechanism Originating New Species

The nucleus encoded cyanoplast (“cyanellar”) ferredoxin-NADP -oxidoreductase (FNR ) of Cyanophora paradoxa, characterized by an N-terminal amino acid sequence, is compared with homologous sequences of other photoautotrophic organisms. The high degree of similarity to the cyanobacterial sequences ind...

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Bibliographic Details
Published inZeitschrift für Naturforschung C. A journal of biosciences Vol. 47; no. 5; pp. 387 - 393
Main Authors Schenk, H. E. A., Bayer, M. G., Maier, T. L., Lüttke, A., Gebhart, U. B., Stevanovic, S.
Format Journal Article
LanguageEnglish
Published Verlag der Zeitschrift für Naturforschung 01.06.1992
Subjects
Cyanelles
Cyanobacteria
Cyanophora paradoxa
Cyanoplasts
Glaucocystophyta
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Summary:The nucleus encoded cyanoplast (“cyanellar”) ferredoxin-NADP -oxidoreductase (FNR ) of Cyanophora paradoxa, characterized by an N-terminal amino acid sequence, is compared with homologous sequences of other photoautotrophic organisms. The high degree of similarity to the cyanobacterial sequences indicates a cyanobacterial origin. This could be a first direct demonstration of an intertaxonic combination: a gene transfer from an original endocytobiont (cyanobacterium) to the nucleus of its host, one of the most important demands of the Endosymbiosis Theory, an evolutionary mechanism leading to the origin of a new species.
ISSN:0939-5075
1865-7125
DOI:10.1515/znc-1992-0612