Results 31 to 40 of about 876 (161)
Extracellular vesicle-linked vitamin B12 acquisition via novel binding proteins in Bacteroides thetaiotaomicron. [PDF]
Biochem JVitamin B12 (cobalamin) and related cobamides are essential cofactors for many gut bacteria, yet their acquisition requires complex uptake systems due to limited availability.
Juodeikis R +10 more
europepmc +2 more sources
STUDIES OF THE MECHANISM OF ACTION OF COBAMIDE COENZYMES [PDF]
Annals of the New York Academy of Sciences, 1964 Peer Reviewed ; http://deepblue.lib.umich.edu/bitstream/2027.42/73404/1/j.1749-6632.1964.tb45046.x ...
Abeles, R. H., Lee, H. A.
openaire +3 more sources
mLife, Volume 2, Issue 4, Page 416-427, December 2023., 2023 Abstract Cobalamin (B12), an essential nutrient and growth cofactor for many living organisms on Earth, can be fully synthesized only by selected prokaryotes in nature. Therefore, microbial communities related to B12 biosynthesis could serve as an example subsystem to disentangle the underlying ecological mechanisms balancing the function and taxonomic
Jiayin Zhou +8 more
wiley +1 more source
, 2023 Cobamides are required by most organisms but are only produced by specific prokaryotic taxa. These commonly shared cofactors play significant roles in shaping the microbial community and ecosystem function.
Jichen Wang (9256810) +3 more
core +2 more sources
The Moon‐Forming Impact and the Autotrophic Origin of Life
ChemPlusChem, Volume 88, Issue 11, November 2023., 2023 All ecosystems start with autotrophs, cells that convert CO2 to organics. In autotrophic theories for origins, life started from CO2. The Moon‐forming impact supplied pure CO2 as the primordial biogenic substrate. Transition metals readily convert H2 and CO2 into formate, acetate and pyruvate, doing the job of 127 enzymes in modern cells, suggesting a ...
Natalia Mrnjavac +4 more
wiley +1 more source
Remediation Journal, Volume 33, Issue 4, Page 323-337, Fall 2023., 2023 Abstract Trichloroethylene (TCE) is a toxic organic compound, which can adversely affect human health. The chemical is one of the most frequently found contaminants in groundwater in the United States and around the world. A landfill in Maryland contaminated with high levels of TCE decades ago was added to the U.S.
Shahrzad Saffari Ghandehari +4 more
wiley +1 more source
Global Challenges, Volume 7, Issue 5, May 2023., 2023 This review collates information concerning different seaweeds and how they and their constituents can reduce methane from ruminants and ensure sustainable production of ruminant proteins in an environmentally beneficial manner. Phlorotannins offer potential for use as feed additives to reduce methane emissions from ruminants. Abstract The potential of
Goldy De Bhowmick, Maria Hayes
wiley +1 more source
mBio, 2020 The beneficial human gut bacterium Akkermansia muciniphila provides metabolites to other members of the gut microbiota by breaking down host mucin, but most of its other metabolic functions have not been investigated. A.
Kenny C. Mok +6 more
doaj +1 more source
The complex machinery of human cobalamin metabolism
Journal of Inherited Metabolic Disease, Volume 46, Issue 3, Page 406-420, May 2023., 2023 Abstract Vitamin B12 (cobalamin, Cbl) is required as a cofactor by two human enzymes, 5‐methyltetrahydrofolate‐homocysteine methyltransferase (MTR) and methylmalonyl‐CoA mutase (MMUT). Within the body, a vast array of transporters, enzymes and chaperones are required for the generation and delivery of these cofactor forms.
Thomas J. McCorvie +3 more
wiley +1 more source
Molecular Ecology, Volume 32, Issue 4, Page 920-935, February 2023., 2023 Abstract Kissing bugs (Hempitera: Reduviidae) are obligately and exclusively blood feeding insects. Vertebrate blood is thought to provide insufficient B vitamins to insects, which rely on symbiotic relationships with bacteria that provision these nutrients.
Carissa A. Gilliland +4 more
wiley +1 more source