| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7816880 | Organic Geochemistry | 2018 | 11 Pages |
Abstract
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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Authors
Nicole J. Bale, Ellen C. Hopmans, Denise Dorhout, Lucas J. Stal, Michele Grego, Judith van Bleijswijk, Jaap S. Sinninghe Damsté, Stefan Schouten,