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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Archives of microbiology 73 (1970), S. 193-194 
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Archives of microbiology 59 (1967), S. 82-92 
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A Thiococcus sp. nov. gen., the first Thiorhodaceae known to contain bacteriochlorophyll b, was isolated from river mud using filtered light above 900 mμ as the selecting agent in enrichments. The orange-brown colour of the immotile, Gram-negative, photolithotrophic cocci is due to two new carotenoids, 3,4,3′,4′-tetrahydrospirilloxanthin and 3,4,3′,4′-tetrahydrospirilloxanthinal. The photosynthetic pigments appear to be associated with a unique internal membrane system consisting of branched membrane tubes of even diameter (approx. 450 Å) continuous with the cell membrane. The negatively stained tubes examined in the electron microscope reveal a surface fine structure of raised bodies arranged in a regular hexagonal pattern.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Archives of microbiology 51 (1965), S. 258-266 
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung Es wird die Isolierung eines obligat phototrophen Bakteriums beschrieben, welches auf Grund seiner Farbe, Morphologie, Nährstoff-Bedürfnisse und streng anaeroben Lebensweise in die Rhodospirillum fulvum-Gruppe eingeordnet wird. Als einzigen Wachstumsfaktor benötigt der Stamm p-Aminobenzoesäure. Rhsp. fulvum bildet Bacteriochlorophyll a als einzigen chlorophyllartigen Farbstoff. Die Hauptmenge der Carotinoide besteht aus Lycopin (I) und Rhodopin (II); es sind außerdem Spuren von 1,2,1′2′-Tetrahydro-1,1′-dihydroxy-Lycopin (III) nachgewiesen.
    Notes: Summary The present paper reports the isolation of an obligate phototrophic bacterium which belongs to the Rhodospirillum fulvum-group on the basis of its colour, morphology, nutritional requirements and strictly anaerobic nature. p-Aminobenzoic acid was shown to be the only growth factor required. Rhsp. fulvum synthesizes bacteriochlorophyll a as its only chlorophyllous pigments. The carotenoid composition comprises lycopene (I) and rhodopin (II) as the major components; traces of 1,2,1′,2′-tetrahydro-1,1′-dihydroxy-lycopene (III) were also present.
    Type of Medium: Electronic Resource
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