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.
openaire +2 more sources
Food Science &Nutrition, Volume 12, Issue 11, Page 8675-8691, November 2024.Vitamin B12 is essential to human physiological processes, it might be challenging for vegans and vegetarians to get enough of it in their diets. Propionibacterium shermanii and Pseudomonas denitrificans have been demonstrated as promising fermented sources of vitamin B12. Vitamin B12 is naturally produced by P. denitrificans, but P.
Anjali Tripathi +9 more
wiley +1 more source
Ethanol and Acetic Acid Production from Carbon Monoxide in a Clostridium Strain in Batch and Continuous Gas-Fed Bioreactors [PDF]
, 2015 The effect of different sources of nitrogen as well as their concentrations on the bioconversion of carbon monoxide to metabolic products such as acetic acid and ethanol by Clostridium autoethanogenum was studied.
Kennes, Christian +2 more
core +3 more sources
Production and utilization of pseudocobalamin in marine Synechococcus cultures and communities
Environmental Microbiology, Volume 26, Issue 10, October 2024.Pseudocobalamin levels in cultured Synechococcus cells are influenced by culture methods and growth conditions but remain consistently around 300 molecules per cell in environmental samples. The amount of pseudocobalamin in cells appears to be loosely coupled to the demand for pseudocobalamin by the enzyme methionine synthase (MetH).
Catherine C. Bannon +7 more
wiley +1 more source
National Journal of Medical Research, 2011 Background: Vitamin B12 is a biologically active corrinoid, a group of cobalt containing compounds with macrocyclic pyrrol rings. Vitamin B12 deficiency is characterized by megaloblastic anemia, fatigue, weakness, constipation, loss of appetite, and ...
Saritaben Mangukiya +4 more
doaj
The roles of B vitamins in phytoplankton nutrition: new perspectives and prospects [PDF]
, 2017 B vitamins play essential roles in central metabolism. These organic water-soluble molecules act as, or as part of, coenzymes within the cell. Unlike land plants, many eukaryotic algae are auxotrophic for certain B vitamins.
Allen +47 more
core +1 more source
A Mechanochemical Switch to Control Radical Intermediates [PDF]
, 2014 B12-dependent enzymes employ radical species with exceptional prowess to catalyze some of the most chemically challenging, thermodynamically unfavorable reactions.
Brunk, Elizabeth +3 more
core +6 more sources
Occurrence of Biologically Inactive Corrinoid Compounds in Canned Edible Apple Snails (Escargots)
, 2015 In this study, we characterized and quantified vitamin B12 in canned apple snails, escargots, (boiled plain) using a microbiological assay based on Lactobacillus delbrueckii ATCC 7830.
F. Teng +5 more
semanticscholar +1 more source
The crystal structure of the C-terminal domain of the salmonella enterica pduo protein: An old fold with a new heme-binding mode [PDF]
, 2016 The two-domain protein PduO, involved in 1,2-propanediol utilization in the pathogenic Gram-negative bacterium Salmonella enterica is an ATP:Cob(I)alamin adenosyltransferase, but this is a function of the N-terminal domain alone.
de Oru\ue9 Lucana, Dar\uedo Ortiz +6 more
core +1 more source
BluB/CobT2 fusion enzyme activity reveals mechanisms responsible for production of active form of vitamin B 12 by Propionibacterium freudenreichii [PDF]
, 2015 Background Propionibacterium freudenreichii is a food grade bacterium that has gained attention as a producer of appreciable amounts of cobalamin, a cobamide with activity of vitamin B 12 .
Chamlagain, Bhawani Shankar +7 more
core +1 more source