Guanylcobamide and hypoxanthylcobamide-Corrinoids formed by Desulfovibrio vulgaris |
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| Authors: | Daniel Harald Guimarães Angelika Weber Iris Klaiber Bernhard Vogler Paul Renz |
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| Affiliation: | (1) Institut für biologische Chemie und Ernährungswissenschaft, Universität Hohenheim, D-70599 Stuttgart, Germany;(2) Institut für organische Chemie, Universität Hohenheim, D-70599 Stuttgart, Germany |
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| Abstract: | The corrinoids synthesized by the sulfate-reducing bacterium Desulfovibrio vulgaris were analyzed. The compounds found were guanylcobamide and hypoxanthylcobamide; structures were determined by mass spectrometry, 1H-NMR, and ultraviolet/visible spectroscopy. D. vulgaris used externally added guanine to form guanylcobamide, as demonstrated with 8-14C-guanine. Addition of adenine did not lead to the formation of adenylcobamide (pseudovitamin B12), whereas 5,6-dimethylbenzimidazole was transformed into vitamin B12. |
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| Keywords: | Desulfovibrio vulgaris Corrinoids Guanylcobamide Hypoxanthylcobamide Pseudovitamin B12 Vitamin B12 Sulfate-reducing bacteria |
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