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The organic compound citrulline is an α-amino acid. [2] Its name is derived from citrullus, the Latin word for watermelon.Although named and described by gastroenterologists since the late 19th century, it was first isolated from watermelon in 1914 by Japanese researchers Yatarō Koga (古賀彌太郎) and Ryō Ōtake (大嶽了) [3] [4] and further codified by Mitsunori Wada of Tokyo ...
The chemical conversion of arginine to citrulline, known as citrullination or deimination. Citrullination or deimination is the conversion of the amino acid arginine in a protein into the amino acid citrulline. Citrulline is not one of the 20 standard amino acids encoded by DNA in the genetic code.
In enzymology, a citrullinase (EC 3.5.1.20) is an enzyme that catalyzes the chemical reaction L-citrulline + H 2 O ⇌ {\displaystyle \rightleftharpoons } L-ornithine + CO 2 + NH 3 Thus, the two substrates of this enzyme are L-citrulline and H 2 O , whereas its 3 products are L-ornithine , CO 2 , and NH 3 .
Chemical formula Synonyms CAS number CAgO carbonylsilver: CCl 2 F 2: dichlorodifluoromethane freon-12: 75-71-8 CCl 4: carbon tetrachloride tetrachloromethane: 56-23-5 C(CN) 4: tetracyanomethane: 24331-09-7 CFCl 3: trichlorofluoromethane freon-11: 75-69-4 CFCl 2 CF 2 Cl: chlorotrifluoromethane freon-13: 75-72-9 CHCl 3: chloroform ...
This is where L-citrulline supplementation comes in: Some people take L-citrulline supplements to produce L-arginine, which improves blood flow by creating nitric oxide, a gas that helps widen ...
Homocitrulline has been suggested as a confounding antigen for rheumatoid arthritis antibodies targeting citrullinated proteins/peptides. [1] Antibodies binding to homocitrulline-containing sequences have been found in rheumatoid arthritis patients' sera [2] [3] More recently, it has been shown that homocitrulline-containing proteins are present in rheumatoid arthritis (RA) joints. [4]
Ornithine transcarbamylase catalyzes the reaction between carbamoyl phosphate and ornithine to form citrulline and phosphate (P i). Another amino group is added from aspartate, producing arginine and denitrogenated fumarate. The resulting arginine (a guanidinium compound) is hydrolysed back to ornithine, producing urea. The amino groups of urea ...
Arginine is the amino acid with the formula (H 2 N)(HN)CN(H)(CH 2) 3 CH(NH 2)CO 2 H. The molecule features a guanidino group appended to a standard amino acid framework. At physiological pH, the carboxylic acid is deprotonated (−CO 2 −) and both the amino and guanidino groups are protonated, resulting in a cation.