Results 1 to 10 of about 1,686 (162)
Identification of specific corrinoids reveals corrinoid modification in dechlorinating microbial communities [PDF]
Environmental Microbiology, 2014 SummaryCobalamin and other corrinoids are essential cofactors for many organisms. The majority of microbes with corrinoid‐dependent enzymes do not produce corrinoids de novo, and instead must acquire corrinoids produced by other organisms in their environment.
Robert H. Allen +7 more
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Corrinoids in anaerobic bacteria [PDF]
FEMS Microbiology Letters, 1990 C1-metabolizing bacteria were analyzed for their corrinoids. The autotrophic phototrophe Chloroflexus aurantiacus contains predominantly the light-sensitive coenzyme B12. The corrinoid could be teh prostethic group of a methylmalonyl-CoA mutase, which is involved in the CO2 fixing reaction sequence from proplonyl-CoA to succinyl CoA.
Hans-Jürgen Eisinger +2 more
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Versatility in Corrinoid Salvaging and Remodeling Pathways Supports Corrinoid-Dependent Metabolism in Dehalococcoides mccartyi [PDF]
Applied and Environmental Microbiology, 2012 ABSTRACTCorrinoids are cobalt-containing molecules that function as enzyme cofactors in a wide variety of organisms but are produced solely by a subset of prokaryotes. Specific corrinoids are identified by the structure of their axial ligands. The lower axial ligand of a corrinoid can be a benzimidazole, purine, or phenolic compound. Though it is known
Shan Yi +7 more
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Ring contraction of hydroporphinoid to corrinoid complexes [PDF]
Proceedings of the National Academy of Sciences, 1981 Crystalline nickel(II) and dicyanocobalt(III) complexes of a racemic 1,2,2,7,7,12,12,17,17,20-decamethyl-20-hydroxy-1,2,3,7,8,12,13,20-octahydro- 17 H -porphyrin rearrange to the corresponding complexes of racemic 19-acetyl-1,2,2,7,7,12,12,17,17-nonamethyl- trans -corrin on melting ...
Andreas Pfaltz +3 more
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Studies on the Corrinoids and Porphyrins in Streptomycetes
Agricultural and Biological Chemistry, 1968 A corrinoid, formed predominantly in the cells of Streptomyces olivaceus 605 grown aerobically on a glucose-lactose medium, was identical with 5,6-dimethylbenzimidazolyl-cobamide coenzyme (DBC coenzyme) by paper chromatography, paper ionophoresis, absorption spectrophotometry, assay of the coenzyme activity in diol dehydratase system and other tests ...
Shoichi Shimizu +2 more
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Influence of corrinoid antagonists on methanogen metabolism [PDF]
Journal of Bacteriology, 1981 Iodopropane inhibited cell growth and methane production when Methanobacterium thermoautotrophicum, Methanobacterium formicicum, and Methanosarcina barkeri were cultured on H2-CO2. Iodopropane (40 microM) inhibited methanogenesis (30%) and growth (80%) when M. barkeri was cultured mixotrophically on H2-CO2-methanol.
J G Zeikus, W Kenealy
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Crystal structure of a methyltetrahydrofolate- and corrinoid-dependent methyltransferase [PDF]
Structure, 2000 Methyltetrahydrofolate, corrinoid iron-sulfur protein methyltransferase (MeTr), catalyzes a key step in the Wood-Ljungdahl pathway of carbon dioxide fixation. It transfers the N5-methyl group from methyltetrahydrofolate (CH3-H4folate) to a cob(I)amide center in another protein, the corrinoid iron-sulfur protein. MeTr is a member of a family of proteins
John J. Stezowski +3 more
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Porphyrin and corrinoid mutants of Bacillus subtilis [PDF]
Journal of Bacteriology, 1977 Porphyrin auxotrophs of Bacillus subtilis can be divided into two groups. Strains belonging to the first group (hemA, hemB, or hemC) are not able to synthesize or metabolize porphobilinogen. These strains require cysteine, cystine, and methionine, respectively.
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Current Aspects of Corrinoid Synthesis
, 1969 Proceedings of the Robert A. Welch Foundation Conferences on Chemical Research: XII.
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Recent advances in elucidation of biological corrinoid functions [PDF]
FEMS Microbiology Reviews, 1993 Eleven adenosylcorrinoid-dependent rearrangements and elimination reactions have been described during the last four decades of vitamin B12 research. In contrast, only the cobamide-dependent methionine synthase was well established as a corrinoid-dependent methyl transfer reaction.
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