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A novel heterocyst glycolipid detected in a pelagic N2 -fixing cyanobacterium of the genus Calothrix
Bale, N.J.; Hopmans, E.C.; Dorhout, D.; Stal, L.J.; Grego, M.; van Bleijswijk, J.D.L.; Sinninghe Damsté, J.S.; Schouten, S. (2018). A novel heterocyst glycolipid detected in a pelagic N2 -fixing cyanobacterium of the genus Calothrix. Org. Geochem. 123: 44-47.
In: Organic Geochemistry. Elsevier: Oxford; New York. ISSN 0146-6380; e-ISSN 1873-5290, meer
Peer reviewed article  

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Author keywords
    Heterocyst glycolipids; Heterocystous cyanobacteria; N 2-fixation; Pelagic; Calothrix6-O-methyl-ß-d-glucopyranose

Auteurs  Top 
  • Grego, M., meer
  • van Bleijswijk, J.D.L., meer
  • Sinninghe Damsté, J.S., meer
  • Schouten, S., meer

    Previous studies have shown that heterocyst glycolipids (HGs) are unique markers for N2-fixing heterocystous cyanobacteria. In this study, the HGs of a marine pelagic Calothrix sp. CCY1611 isolated from the tropical western North Atlantic were analyzed by ultra-high pressure liquid chromatography–high resolution mass spectrometry and it was shown that this organism contains an unusual C28 triol HG with a methylated C6 sugar (methyl-HG28 triol) head group. Gas chromatography–mass spectrometry analysis of the sugar released from the novel HG by acid methanolysis revealed that the sugar is likely 6-O-methyl-β-d-glucopyranose. We propose that this methyl-HG28 triol is a potential biomarker for pelagic members of the genus Calothrix.

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