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The Pauly reaction is a chemical test used for detecting the presence of tyrosine or histidine in proteins. It is named after German chemist Hermann Pauly , who first described the reaction. [ 1 ] When proteins containing either tyrosine or histidine are reacted with diazotized sulfanilic acid under alkaline conditions, a red color is formed by ...
Hermann Pauly (18 July 1870 – 31 October 1950) was a German chemist and inventor. He is known for the Pauly reaction , a chemical test used for detecting the presence of tyrosine or histidine in proteins .
The nitroprusside reaction tests for the presence of free thiol groups of cysteine in proteins; The Sullivan reaction tests for the presence of cysteine and cystine in proteins; The Acree–Rosenheim reaction tests for the presence of tryptophan in proteins; The Pauly reaction tests for the presence of tyrosine or histidine in proteins
Tyrosine, which can also be synthesized in the body from phenylalanine, is found in many high-protein food products such as meat, fish, cheese, cottage cheese, milk, yogurt, peanuts, almonds, pumpkin seeds, sesame seeds, soy protein and lima beans.
Pauly reaction; Peptide mass fingerprinting; Peptide microarray; Phi value analysis; Phosphoamino acid analysis; Photoactivatable fluorescent protein; Ponceau S; Protein chemical shift prediction; Protein function prediction; Protein pKa calculations; Protein purification; List of protein secondary structure prediction programs; Protein ...
Histidine ball and stick model spinning. Histidine (symbol His or H) [2] is an essential amino acid that is used in the biosynthesis of proteins.It contains an α-amino group (which is in the protonated –NH 3 + form under biological conditions), a carboxylic acid group (which is in the deprotonated –COO − form under biological conditions), and an imidazole side chain (which is partially ...
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But protein structures were far less amenable to this technique than the crystalline minerals of his former work. The best X-ray pictures of proteins in the 1930s had been made by the British crystallographer William Astbury , but when Pauling tried, in 1937, to account for Astbury's observations quantum mechanically, he could not.