Guanylcobamide and hypoxanthylcobamide. Corrinoids formed by Desulfovibrio vulgaris

Publication Type
Journal contribution
Authors
Guimares, D. H.; Weber, A.; Klaiber, I.; Vogler, B.; Renz, P.
Year of publication
1994
Published in
Arch. Microbiol.
Band/Volume
162/4
Page (from - to)
272-6
Abstract

The corrinoids synthesized by the sulfate-reducing bacterium Desulfovibrio vulgaris were analyzed. The compds. found were guanylcobamide (I) and hypoxanthylcobamide (II); structures were detd. by mass spectrometry, 1H-NMR, and UV/visible spectroscopy. D. vulgaris used externally added guanine to form guanylcobamide, as demonstrated with 8-14C-guanine. Addn. 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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