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On the Optimization of Hydrolysis Conditions for Simultaneous Determination of Amino Acids and Amino Sugars in Marine Sediments
(SciTecnhol, 2013-07-18)
In the present work different approaches were tested for the optimization of the hydrolysis conditions for the joint determination of amino acids and amino sugars in chitin, an important structural polymer in fungi, ...
Influence of free amino acids on clavulanic acid production by Streptomyces clavuligerus in synthetic medium
(Inst Tecnologia Parana, 2006-02-01)
The effect of nitrogen source on clavulanic acid production was investigated in shake flasks. Media containing asparagine plus one of several different amino acids or a combination of two amino acids was tested. The best ...
Structural insights into selectivity and cofactor binding in snake venom l-amino acid oxidases
(2012-04-27)
l-Amino acid oxidases (LAAOs) are flavoenzymes that catalytically deaminate l-amino acids to corresponding α-keto acids with the concomitant production of ammonia (NH 3) and hydrogen peroxide (H 2O 2). Particularly, snake ...
Concise and straightforward asymmetric synthesis of a cyclic natural hydroxy-amino acid
(MDPI AG, 2014)
© 2014 by the authors; licensee MDPI, Basel, Switzerland. An enantioselective total synthesis of the natural amino acid (2S,4R,5R)-4,5-dihydroxy-pipecolic acid starting from D-glucoheptono-1, 4-lactone is presented. The ...
Chiral analysis of derivatized amino acids from kefir by gas chromatography
(Elsevier Science, 2016-09)
The amino acids present in the kefir samples were derivatized using different alkyl chloroformates combined with alcohols and chromatographed on a (3-O-butanoyl-2,6-di-O-pentyl)-γ-cyclodextrin (Lipodex E) chiral gas-liquid ...
Estimating Amino Acid Requirement of Brazilian Freshwater Fish from Muscle Amino Acid Profile
(WILEY-BLACKWELL PUBLISHING, INC, 2009)
Information on nutritional requirement of some Brazilian farmed fish species, especially essential amino acids (EAA) requirements, is scarce. The estimation of amino acids requirements based on amino acid composition of ...
Metabolomics method to comprehensively analyze amino acids in different domains
(Royal Soc Chemistry, 2015-01-01)
Amino acids play essential roles in both metabolism and the proteome. Many studies have profiled free amino acids (FAAs) or proteins; however, few have connected the measurement of FAA with individual amino acids in the ...
A SequenceSpace analysis of Lys49 phospholipases A2: Clues towards identification of residues involved in a novel mechanism of membrane damage and in myotoxicity
(1998-04-01)
'SequenceSpace' analysis is a novel approach which has been used to identify unique amino acids within a subfamily of phospholipases A2 (PLA2) in which the highly conserved active site residue Asp49 is substituted by Lys ...
X-ray powder diffraction analysis of a new palladium(II) amino acid complex
(J C P D S-int Centre Diffraction Data, 2004-09-01)
Powder X-ray diffraction data for a new palladium(II) amino acid complex, of composition PdC12H2ON2O4S2, are presented in this paper. Orthorhombic cell parameters are: a = 10.740 angstrom, b = 19.999 angstrom, and c = ...