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Function and the biosynthesis of unusual corrinoids by a novel activation mechanism of aromatic compounds in anaerobic bacteria

, : Function and the biosynthesis of unusual corrinoids by a novel activation mechanism of aromatic compounds in anaerobic bacteria. Advances in Space Research 9(6): 117-125

A corrinoid screening of several phylogenetically diverse “archaebacteria” revealed vitamin B12-like corrinoids. This indicates an optimized structure and function relationship of the corrinoids under different bacterial growth conditions during the early evolution of live. Some of these corrinoids have been substituted by modified corrinoids in growing cells without affecting the generation times of the bacteria. In this respect, the discovery of the unique para-cresolyl cobamide from the eubacterium Sporomusa ovata attracted attention. The unusual structure of this corrinoid was achieved by a biosynthesis proceeding via a novel and stereospecific activation mechanism of aromatic compounds. The corrinoid was detected both in the membrane fraction and in the soluble fraction of the cells. Methyltransfer is one of the probable functions of the para-cresolyl cobamide in Sporomusa.


DOI: 10.1016/0273-1177(89)90217-2

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