Results 21 to 30 of about 17,877 (340)

Diastereoselective Cyclization of a Glycyl-alanine Azomethine to an Imidazolidinone: Determination of the Product Configuration by X-Ray Analysis

open access: yesCHIMIA, 1989
Glycyl-(5')-alanine-esters 1 and 2 can be condensed to the corresponding 4-oxo-imidazolidin-3-yl-propionates 3 and 4, respectively. The diastereomers 3a and 4a are formed preferentially and the configuration was found to be u by single crystal X-ray ...
Martin Egli, Robin Polt, Dieter Seebach
doaj   +1 more source

Magnesium and imidazole propionate

open access: yesClinical Nutrition ESPEN, 2021
Circulating levels of imidazole propionate (ImP), a microbial metabolite of histidine, were higher in participants with type 2 diabetes (T2D) compared to those without and also induced insulin resistance. We hypothesize that low intake of magnesium (Mg) and/or low body Mg status in humans may lead to low Mg concentrations in gut microbiota, and, in ...
Lei Fan   +7 more
openaire   +3 more sources

Design, synthesis, and preliminary biological evaluation of catalpol propionates as antiaging drugs

open access: yesBMC Chemistry, 2019
In this paper, catalpol propionylated analogs (CPs) were designed as drug ligands of glutathione peroxidase (GSH-Px) based on molecular docking (MD) using Surflex-Docking method.
Chunhong Dong   +5 more
doaj   +1 more source

Emerging Trends for Nonthermal Decontamination of Raw and Processed Meat: Ozonation, High-Hydrostatic Pressure and Cold Plasma

open access: yesFoods, 2022
Meat may contain natural, spoilage, and pathogenic microorganisms based on the origin and characteristics of its dietary matrix. Several decontamination substances are used during or after meat processing, which include chlorine, organic acids, inorganic
Ume Roobab   +7 more
doaj   +1 more source

Isolation and Biosynthetic Analysis of Haliamide, a New PKS-NRPS Hybrid Metabolite from the Marine Myxobacterium Haliangium ochraceum

open access: yesMolecules, 2016
Myxobacteria of marine origin are rare and hard-to-culture microorganisms, but they genetically harbor high potential to produce novel antibiotics. An extensive investigation on the secondary metabolome of the unique marine myxobacterium Haliangium ...
Yuwei Sun   +5 more
doaj   +1 more source

A suite of de novo c-type cytochromes for functional oxidoreductase engineering [PDF]

open access: yes, 2016
Central to the design of an efficient de novo enzyme is a robust yet mutable protein scaffold. The maquette approach to protein design offers precisely this, employing simple four-α-helix bundle scaffolds devoid of evolutionary complexity and with proven
Anderson, J L R   +7 more
core   +2 more sources

Crystal structure of Bfr A from Mycobacterium tuberculosis: incorporation of selenomethionine results in cleavage and demetallation of haem. [PDF]

open access: yesPLoS ONE, 2009
Emergence of tuberculosis as a global health threat has necessitated an urgent search for new antitubercular drugs entailing determination of 3-dimensional structures of a large number of mycobacterial proteins for structure-based drug design.
Vibha Gupta   +4 more
doaj   +1 more source

Effect of calcium propionate on rats with a high-fat hypercaloric diet

open access: yesRegulatory Mechanisms in Biosystems, 2023
Calcium propionate, as an approved food additive, is widely used as a mold inhibitor in food and feed. It is recognized as safe, but when metabolized in the gastrointestinal tract, it can affect the body’s metabolism both directly and indirectly through ...
M. A. Lieshchova   +4 more
doaj   +1 more source

The ‘porin-cytochrome’ model for microbe-to-mineral electron transfer [PDF]

open access: yes, 2012
Many species of bacteria can couple anaerobic growth to the respiratory reduction of insoluble minerals containing Fe(III) or Mn(III/IV). It has been suggested that in Shewanella species electrons cross the outer membrane to extracellular substrates via ‘
Afkar   +57 more
core   +2 more sources

Determination of the degree of substitution (DS) of mixed cellulose esters by elemental analysis [PDF]

open access: yes, 2001
Equations for transforming the results of elemental analysis (EA) into degree of substitution (DS) values for aliphatic cellulose esters were developed.
Borredon, Marie-Elisabeth   +2 more
core   +3 more sources

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