Search results
Results from the WOW.Com Content Network
Ninhydrin is most commonly used to detect fingerprints in forensic cases, as the terminal amines of lysine residues in peptides and proteins sloughed off in fingerprints react with ninhydrin. [2] [3] Ninhydrin is a white solid that is soluble in ethanol and acetone. [1] Ninhydrin can be considered as the hydrate of indane-1,2,3-trione.
Hydrindantin is an organic chemical thought to be involved with the ninhydrin test for amines. [2] References This page was last edited ...
The structure of the metal complex is usually misrepresented. It is an nitroso complex, with M-N bonds. [2] Proposed formation of nitrosophenol ligand in the early stages of the Millon test. The reagent is made by dissolving metallic mercury in nitric acid and diluting with water, forming mercuric nitrate (Hg[NO 3] 2). [3]
The characteristic color of a positive biuret test. In chemistry, the biuret test (IPA: / ˌ b aɪ j ə ˈ r ɛ t /, / ˈ b aɪ j ə ˌ r ɛ t / [1]), also known as Piotrowski's test, is a chemical test used for detecting the presence of at least two peptide bonds in a molecule.
Frederick Sanger. In 1945, Frederick Sanger described its use for determining the N-terminal amino acid in polypeptide chains, in particular insulin. [4] Sanger's initial results suggested that insulin was a smaller molecule than previously estimated (molecular weight 12,000), and that it consisted of four chains (two ending in glycine and two ending in phenylalanine), with the chains cross ...
Hawkinsin is ninhydrin positive (a common test to detect amino acids and proteins with a free -NH 2 group). It is found in elevated concentrations in the urine in hawkinsinuria, which is probably related to the depletion of glutathione and resulting high excretion of 5-oxoproline. [2]
Mung Beans. Of course, baking isn't the only time you might need an egg replacement. “If you're looking for a protein-packed breakfast with a similar texture to scrambled eggs or an omelet, mung ...
Transamination is demonstrated if the corresponding new amino acid and keto acid are formed, as revealed by paper chromatography. Reversibility is demonstrated by using the complementary keto/amino acid pair as starting reactants. After chromatogram has been taken out of the solvent the chromatogram is then treated with ninhydrin to locate the ...