Results 21 to 30 of about 3,260 (236)

Porphyrin and corrinoid mutants of Bacillus subtilis [PDF]

open access: bronzeJournal 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.
András Miczák
openalex   +4 more sources

Recent advances in elucidation of biological corrinoid functions [PDF]

open access: bronzeFEMS 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.
Erhard Stupperich
openalex   +4 more sources

Observations on the Organometallic Bond of the Corrinoid Coenzymes

open access: hybridJournal of Biological Chemistry, 1965
Harry P. C. Hogenkamp   +2 more
openalex   +4 more sources

Biological activities of new corrinoids.

open access: bronzeAgricultural and Biological Chemistry, 1982
Tadashi Kamikubo   +4 more
openalex   +4 more sources

Formation of cobalt-free corrinoids in Rhodopseudomonas spheroides.

open access: goldJournal of Nutritional Science and Vitaminology, 1977
Co-free corrinoids (CFCs) were found in the cells of Rhodopseudomonas spheroides grown without cobalt salt. A predominant fraction of three CFCs on paper-electrophoregram was further purified, and investigated physico-chemically as well as microbiologically in comparison with that isolated by Toohey from Chromatium.
Tadashi Kamikubo   +2 more
openalex   +5 more sources

The prospects for the use of vitamin B12 derivatives in pharmacology

open access: yesФармакоэкономика, 2023
Background. The structure of corrin tetrapyrrole macrocycles (compounds similar in structure to vitamin B12) is a kind of universal chemical template for targeted drug delivery, and the development of chemical sensors and antidotes.Objective ...
I. Yu. Torshin   +2 more
doaj   +1 more source

mibPOPdb: An online database for microbial biodegradation of persistent organic pollutants

open access: yesiMeta, Volume 1, Issue 4, December 2022., 2022
This study presents the Microbial Biodegradation of Persistent Organic Pollutants Database (mibPOPdb) database, a web‐accessible literature‐based microbial biodegradation of persistent organic pollutants (POPs) resource. We also developed a robust chemical biodegradability prediction model with Graph Neural Networks.
Tanyaradzwa R. Ngara   +2 more
wiley   +1 more source

A vitamin B12 transporter in Mycobacterium tuberculosis [PDF]

open access: yesOpen Biology, 2013
Vitamin B12-dependent enzymes function in core biochemical pathways in Mycobacterium tuberculosis, an obligate pathogen whose metabolism in vivo is poorly understood. Although M.
Krishnamoorthy Gopinath   +6 more
doaj   +1 more source

Synergism of components as the main approach to creation of a probiotic complex

open access: yesМедицинский совет, 2020
Development of probiotic products containing several strains: Bifidumbacterium lactis BI-04, Lactobacillus acidophilus La-14 and Lactobacillus rhamnosus Lr-32, is an upcoming trend, as it builds capacity of preventive treatment.
E. V. Shikh   +2 more
doaj   +1 more source

Characterization of Vitamin B12 Compounds in Fermented Poultry Manure Fertilizers

open access: yesAgriculture, 2021
(1) Background: Currently, no data are available on the vitamin B12 content of an organic fertilizer product, viz. fermented poultry manure, or whether the organic fertilizer product contains vitamin B12 or inactive corrinoids (or both).
Hiromi Katsura   +4 more
doaj   +1 more source

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