The major function of this vitamin is to be cofactor of the microsomal γ-glutamylcarboxylase. Recently, novel roles for this vitamin in the membrane have been postulated. To get insight into the influence of vitamin K1 on the phospholipid component of the membrane, we have studied the ...
48, 49 Although human vitamin K1 (phytomenadione) stores are derived primarily from dietary plant sources, the majority of vitamin K2 (menaquinone) is generated by intestinal bacterial biosynthesis.50 Veillonella, Enterobacteriaceae, Bacteroides, and Prevotella all have been shown to synthesize this ...
The incubation of erythrocyte ghosts with mixtures of vitamins A + D3, A + E, A + K1 , produces decrease or increase of fluorescence anisotropy r of the DPH probe, depending on the vitamin/vitamin ratio. We found a correlation between the order parameter S and cell fusion phenomena observe...
For example, the long aliphatic side-chain in the 3-position of vitamin K1 (7.2) can be pruned without affecting the principal actions of this vitamin. In such a case, it is evident that the side-chain lacks all of those atoms responsible for adsorption of this vitamin on the receptors....
Lindlar’s Catalyst is used for the hydrogenation of alkynes into alkenes. The Lindlar’s Catalyst is used, on a large scale, in the synthesis of Vitamin A, and also used in the synthesis of dihydro vitamin K1. The term "Lindlar" is named after a British chemist, Herbert Lindlar, their...
Crystal structure of the TSH receptor (TSHR) bound to a blocking-type TSHR autoantibody A complex of the TSH receptor extracellular domain (amino acids 22-260; TSHR260) bound to a blocking-type human monoclonal autoantibody (K1-70) was purifie... P Sanders,S Young,J Sanders,... - 《...
Chemical analysis of apple fruit material exposed to oxidative stress: (a) content of vitamin C, (b) total soluble polyphenols content, (c) total flavanol content, (d) antioxidant activity by means of ABTS, (e) antioxidant activity by means of DPPH. Data points show average values with stan...
This medium was supplemented with 0.5 mg of bovine haemin (Sigma) and 0.1 mg of vitamin K1 (Sigma) in 100 ml of final volume. Serial dilutions of lactobacilli were inoculated in the medium and incubated in anaerobic conditions at 37°C for 72 h. Plates were then exposed to ambient air ...
were highlighted with arabic numerals 1, 2, 3 and 4, representing thyroglobulin with a molecular weight (MW) of 670KDa, γ -globulin with a MW of 158 KDa, Ovalbumin with a MW of 44 KDa, myoglobin with MW of 17 KDa and vitamin B12 with a MW of 1.35 KDa, respectively....
Angeloylgomisin H (84) and gomisin G (270) had DCFH-DA cellular-based activity, with IC50 values of 38.2 and 81.5 μM, respectively. It is interesting to note that the antioxidant activities of schisandrene (345) are comparable to the commercial antioxidant vitamin C and trolox [87]...