Results 21 to 30 of about 1,224 (179)

Versatility in Corrinoid Salvaging and Remodeling Pathways Supports Corrinoid-Dependent Metabolism in Dehalococcoides mccartyi [PDF]

open access: yesApplied 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   +6 more
openaire   +2 more sources

Ring contraction of hydroporphinoid to corrinoid complexes [PDF]

open access: yesProceedings 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
Rasetti V   +3 more
openaire   +3 more sources

Human gut Bacteroides capture vitamin B12 via cell surface-exposed lipoproteins

open access: yeseLife, 2018
Human gut Bacteroides use surface-exposed lipoproteins to bind and metabolize complex polysaccharides. Although vitamins and other nutrients are also essential for commensal fitness, much less is known about how commensal bacteria compete with each other
Aaron G Wexler   +5 more
doaj   +1 more source

Nutrient sharing in the microbial world

open access: yesFrontiers in Microbiology, 2014
The stability and function of a microbial community depends on nutritional interactions among community members such as the cross-feeding of essential small molecules synthesized by a subset of the population.
Erica Christine Seth, Michiko E Taga
doaj   +1 more source

Influence of corrinoid antagonists on methanogen metabolism [PDF]

open access: yesJournal 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.
W, Kenealy, J G, Zeikus
openaire   +2 more sources

Mouse transcobalamin has features resembling both human transcobalamin and haptocorrin.

open access: yesPLoS ONE, 2011
In humans, the cobalamin (Cbl) -binding protein transcobalamin (TC) transports Cbl from the intestine and into all the cells of the body, whereas the glycoprotein haptocorrin (HC), which is present in both blood and exocrine secretions, is able to bind ...
Katrine Hygum   +7 more
doaj   +1 more source

Supplementing lactating dairy cows with a vitamin B12 precursor, 5,6-dimethylbenzimidazole, increases the apparent ruminal synthesis of vitamin B12

open access: yesAnimal, 2015
Cobalamin (CBL), the biologically active form of vitamin B12, and its analogs, are produced by bacteria only if cobalt supply is adequate. The analogs differ generally by the nucleotide moiety of the molecule.
A. Brito   +4 more
doaj   +1 more source

Development of a method for the separation of corrinoids in ovine tissues by HPLC

open access: yes, 2005
A method has been developed using a combination of high-performance liquid chromatography (HPLC) and a radioisotope dilution assay (RIDA) to routinely estimate the distribution of corrinoids (the cobalamins hydroxocobalamin, methylcobalamin and 5 ...
Kelly, R J, Gruner, Tini M, Sykes, A R
core   +1 more source

Acetyl Coenzyme A Synthesis from Unnatural Methylated Corrinoids:  Requirement for “Base-Off” Coordination at Cobalt

open access: yes, 2016
Acetyl Coenzyme A Synthesis from Unnatural Methylated Corrinoids:  Requirement for “Base-Off” Coordination at ...
Stephen W. Ragsdale (1264635)   +2 more
core   +1 more source

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