Glutamine (Gln or Q) ((2S)-2-amino-4-carbamoyl-butanoic acid) is a polar, uncharged amino acid with the formula HOOCCH(NH2)(CH2)2CONH2. The abbreviation Glx or Z represents either Gln or Glu. The side chain contains an amide group in place of the carboxylate and can be considered ...
Aspartic acid, an amino acid obtainable as a product of the hydrolysis of proteins. First isolated in 1868 from legumin in plant seeds, aspartic acid is one of several so-called nonessential amino acids for mammals; i.e., they can synthesize it from oxal
The sulfur containing amino acid methionine can provide cysteine by the reverse-transsulfuration pathway (Fig.2a). Homocysteine generated from the methionine cycle is condensed with serine to become cystathionine by cystathionine β-synthase (CBS), and is then transformed to cysteine by cystathionine ...
Hydrogen bonding between nucleic acid constituents and amino acid amide groupfluorescence counterstainnuclear counterstainimmunocytochemistrypropidium iodidecell cultureThe formation of hydrogen-bonded complexes between 9-ethyladenine and acetamide in chloroform solution has been studied by infrared spectroscopy. ...
3-对羟苯基丙氨酸 sulfhydryl 氢硫的 ～enzyme 硫化氢解酶 ～ group 巯基 cysteine 半胱氨酸,巯基丙氨酸 cystine 胱氨酸,双巯丙氨酸 amide ①酰胺 ②氨化物 asparagine 天门冬酰胺 glutamine 谷氨酰胺 aspartic acid 天门冬氨酸,丁氨二酸 glutamic acid 谷氨酸 proline 脯氨酸,氮戊环-[2]-基羧酸 lysine 赖氨酸...
S. et al. Equilibrium acidities of carbon acids. VI. Establishment of an absolute scale of acidities in dimethyl sulfoxide solution. J. Am. Chem. Soc. 97, 7006–7014 (1975). Article CAS Google Scholar Shields, G. & Seybold, P. Computational Approaches to Predict pKa Values (CRC Press...
Reacting aldehyde with amide, carbon monoxide and hydrogen in amidocarbonylation reaction to give N-acyl amino acid in presence of cobalt carbonyl catalyst... The present invention relates to a sequence for the preparation of amino acids, for example alpha-amino acids, in particular methionine, by...
transfer an amino group from the α-carbon of anamino acidamino acid to the α-carbon of an oxo acid, producing a new amino acid and a new oxo acid. A simplified representation of the main amino acidbiosynthesispathways in plants is presented inFig. 1. In addition, aromatic aminotransferase...
Peptide products of PoyA + PoyD coexpressions were subjected to acid hydrolysis, Marfey-type derivatization, and chromatographic separation to demonstrate the presence of d-amino acids consistent with the identity of residues in the mature polytheonamide natural product (Bhushan & Bruckner, 2011; ...
group may be reacted with an acid to reform the imido group so that the compound may then undergo non-nucleophilic manipulations. Also provided is a resolution method in which diasteriometric compounds having the acylamino group as described above are reacted with acid, and as these diasterio...