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Stutz, Erhard

Nom
Stutz, Erhard
Affiliation principale
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Professeur.e émérite
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https://libra.unine.ch/handle/123456789/32192

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  • Publication
    Accès libre
    Analysis of the 22 kbp long psbD-psbC gene cluster of Euglena gracilis chloroplast DNA : Evidence for overlapping transcription units undergoing differential processing
    (1994-05-17)
    Orsat, Bernard
    ;
    Spielmann, Albert
    ;
    Marc-Martin, Sophie 
    ;
    Lemberger, Thomas
    ;
    Stutz, Erhard 
    The clustered genes psbD and psbC covering together close to 22000 nucleotides contain ten and eleven exons, respectively. The corresponding translation products, i.e, Photosystem II core 34 kDa (D2) protein and the CP43 chlorophyll binding protein are highly conserved. Introns vary in lenght from 305 to 4144 nucleotides. The two genes have about 900 nucleotides in common including an intron. To obtain stable mRNAs of about 1400 (psbD) and 1500 (psbC) nucleotides the pre-transcripts must undergo differential processing and/or splicing events within the overlapping region.
  • Publication
    Accès libre
    Complete sequence of Euglena gracilis chloroplast DNA
    (1993)
    Hallick, Richard B.
    ;
    Hong, Ling
    ;
    Drager, Robert G.
    ;
    Favreau, Mitchell R.
    ;
    Monfort, Amparo
    ;
    Orsat, Bernard
    ;
    Spielmann, Albert
    ;
    Stutz, Erhard 
    We report the complete DNA sequence of the Euglena gracllis, Pringsheim strain Z chloroplast genome. This circular DNA is 143,170 bp, counting only one copy of a 54 bp tandem repeat sequence that is present in variable copy number within a single culture. The overall organization of the genome involves a tandem array of three complete and one partial ribosomal RNA operons, and a large single copy region. There are genes for the 16S, 5S, and 23S rRNAs of the 70S chloroplast ribosomes, 27 different tRNA species, 21 ribosomal proteins plus the gene for elongation factor EF-Tu, three RNA polymerase subunits, and 27 known photosynthesis-related polypeptides. Several putative genes of unknown function have also been identified, including five within large introns, and five with amino acid sequence similarity to genes in other organisms. This genome contains at least 149 introns. There are 72 individual group II introns, 46 individual group III introns, 10 group II introns and 18 group III introns that are components of twintrons (introns-within-introns), and three additional introns suspected to be twintrons composed of multiple group II and/or group III introns, but not yet characterized. At least 54,804 bp, or 38.3% of the total DNA content is represented by introns.
  • Publication
    Accès libre
    Mapping and sequencing of an actively transcribed Euglena gracilis chloroplast gene (ccsA) homologous to the Arabidopsis thaliana nuclear gene cs(ch-42)
    (1992)
    Orsat, Bernard
    ;
    Monfort, Amparo
    ;
    Chatellard, Philippe
    ;
    Stutz, Erhard 
    We mapped and sequenced a novel chloroplast gene encoding a protein (348 amino acids) which shows a high sequence identity with both the decoded nuclear cs(ch-42) gene product of Arabidopsis thaliana, and the C-terminal half of the decoded ‘crtA’ gene product of Rhodobacter capsulatus. The chloroplast gene (ccsA) is split (two exons) and transcribed into a stable mRNA of about 1200 nucleotides. The putative protein may be involved in the biosynthesis of photosynthetic pigments.