The main primary bile acid formed from cholesterol in rabbit is cholic acid (2).r During the enterohepatic circulation of bile, cholic acid is extensively transformed into deoxycholic acid by the action of intestinal microorganisms, and deoxycholic acid is normally the predominant bile acid in rabbit bile (2). Small amounts of other bile acids have been isolated from rabbit bile. In 1936 Kishi ...

Heparan sulfate interacts with antithrombin, a protease inhibitor, to regulate blood coagulation. Heparan sulfate 3-O-sulfotransferase isoform 1 performs the crucial last step modification in the biosynthesis of anticoagulant heparan sulfate. This enzyme transfers the sulfuryl group (SO(3)) from 3'-phosphoadenosine 5'-phosphosulfate to the 3-OH position of a glucosamine residue to form the 3-O-...

The autocatalytic system, N-phospho-a-amino acids, could not only self-assemble into oligo-peptides but also act as the phosphorylation reagents to phosphorylate the nucleosides into nucleotides and oligo-nucleotides, in aqueous medium. While, the b-amino acids did not have such properties.

The role of atmospheric aerosols on climate change is one the biggest uncertainties in most global models. Organic have been identified as potential cloud condensation nuclei (CCN), and amino acids are organic molecules that could serve CCN. Amino make up a significant portion total material atmosphere, herein we present systematic study hydration for two common acids, glycine serine. We comput...

1. Proteins 1.1. Amino Acids 1.2. Polypeptide chains 1.3. Primary structure 1.4. Secondary structure 1.5. Tertiary structure 1.6. Quaternary structure 1.7. Enzymes 2. Carbohydrates 2.1. Monosaccarides 2.1.1. Stereo-isomerization 2.1.2. Cyclic Structures 2.2. Disaccharides 3. Polysaccharides 4. Lipids 4.1. Fatty acids 4.2. Fatty acids in humans 4.3. Triacyglycerols 4.4. Phospholipids 4.5. Steroi...

this article addresses the interplay between heat of hydration and physico-mechanical properties of calcium sulfate hemi-hydrate in the presence of retarding additives such as citric and malic acids and sodium citrate. the heat of hydration was measured using a semi-isothermal calorimeter. results proved that citric and malic acids had superior impact on hydration and mechanical properties. whi...

The effect of microwave roasting process on the compositional parameters and bioactive contents fig seed oil were investigated. Fig seeds ground roasted in a oven at 350, 460 600 Watt for 5 10 minutes processed to obtain oil. results showed that peroxide, K232 K270 values adversely affected by roasting. was prosperous source ?-tocopherol significant losses observed due pre-treatment. major fatt...