An enzymatic asymmetric synthesis was carried out for the preparation of enantiomerically pure L-diphenylalanine using the rationally engineered aromatic L-amino acid transaminase (eAroATEs) obtained from Enterobacter sp. BK2K-1. To rationally redesign the enzyme, structural model was constructed by the...
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achieved the amination reaction using AvPAL with β-deuterated cinnamic acid50. Although this reaction resulted in a low enantiomeric excess (ee) value, it provided evidence that β-deuterated substrates are accepted by PALs. However, for other substitutions apart from deuterium, such as fluorine ...
The reductive alkylation of anthranilic acid (1d), which is also known as vitamin L1, 5-aminoisophthalic acid (1e), and 4-aminophenylacetic acid (1f) afforded 3da, 3ea, and 3fa in excellent yield using 40–60 atm of H2. In contrast, we recognized that aliphatic amino acids (or ...
Moreover, this approach could be advanced to a practical and useful method to synthesize previously unknown N-Boc β3-amino acid methyl esters on a multi-gram scale with high yields and excellent enantioselectivities, starting from simple commercially available nitroalkanes. These findings implicate ...
PURPOSE: To increase the excretion efficiency of amino acids, especially L-lysine from an amino acid-excretion strain of coryneform bactefia by inducing the proliferation performance of the strain on trehalose and selecting the strain in a trehalose-containing medium.KIRCHER MANFRED DR...
Genipin Amino acid Gardenia blue pigment genihistidine A Supramolecular assemblies Molecular dynamics simulation 1. Introduction Gardenia blue (GB) pigment, as a natural blue pigment, is produced by the spontaneous cross-linking coloring reaction between the primary amino-containing compounds and genipin ...
A study of the substrate specificity of Na+-dependent and Na+-independent neutral amino acid transport systems in dog intestinal brush-border membrane vesi... Neutral amino acids are mainly transported across the intestinal brush-border membrane by two Na+-dependent systems (system B 0 and ...
Amino acid analysis has become a deceptively simple methodology provided sufficient sample is available. However, micro-amino acid analysis remains one of the most difficult analytical procedures in protein chemistry. Amino acids vary widely in their stability/lability to acid hydrolysis, oxidation, and...
Transcriptome-based identification of enzymes involved in amino acid biosynthesis in the small brown planthopper, Laodelphax striatellus[J] . Guo-Qing Li,Wen-Bin,Li,Qiang,Yang.Open Access Insect Physiology . 2012 (defa)Yang, L., Fu, Q., Hu, W.-B., Li, F., & Li, G. (2012). ...