Results 141 to 150 of about 4,136 (168)
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On the formation of reductic acid from pentoses or hexuronic acids
Carbohydrate Research, 1993Abstract Careful hydrolysis of (±)- cis - or (±)- trans -tetrahydro-2,5-dimethoxy-2-furaldehyde dimethyl acetal proceeded via 5,5-dimethoxy-4-oxopentanal to give (±)- trans -4-hydroxy-5-methoxy-2-cyclopentenone and (±)- trans -4,5-dihydroxy-2-cyclopentenone.
Tania Ahmad +3 more
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A gas chromatographic method for the quantitative detemination of hexuronic acids in alginic acid
Analytical Biochemistry, 1981Abstract A method has been developed for the quantitative determination of the relative proportions of d -mannuronic and l -guluronic acids in alginic acid. To obtain homogeneous reaction conditions the viscosity of the alginic acid sample was first decreased by limited hydrolysis with mineral acid.
L, Vadas +3 more
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Conversion of hexuronic acid to hexaric acid
The present invention relates to a method and microbial host strain for converting a hexuronic acid to a hexaric acid. In particular, the invention relates to the con-version of D-galacturonic acid to meso-galactaric acid (mucic acid). The invention also concerns an isolated nucleotide sequence.Boer, Harry +3 more
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Structural identification of isomeric O-trimethylsilyl derivatives of some hexuronic acids
Carbohydrate Research, 1977The structures of the isomeric products obtained on trimethylsilylation of naturally occurring hexuronic acids and their sodium salts and lactones have been established by the application of n.m.r. (for anomeric configuration) and mass spectrometry (for ring size).
J F, Kennedy, S M, Robertson, M, Stacey
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Determination of hexuronic acids in glycosaminoglycans by automated ion-exchange chromatography
Analytical Biochemistry, 1976Abstract This report describes a procedure for analyzing glucuronic and iduronic acids using the Technicon automated sugar chromatography system. Glueronic and iduronic acids of standard samples of glycosaminoglycans have been analyzed after hydrolysis by formic acid.
B, Radhakrishnamurthy +2 more
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Substrate Specificity of the Heparan Sulfate Hexuronic Acid 2-O-Sulfotransferase
Biochemistry, 2001The interaction of heparan sulfate with different ligand proteins depends on the precise location of O-sulfate groups in the polysaccharide chain. We have previously shown that overexpression in human kidney 293 cells of a mouse mastocytoma 2-O-sulfotransferase (2-OST), previously thought to catalyze the transfer of sulfate from 3'-phosphoadenosine 5 ...
Rong, J +4 more
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Engineering hexuronic acid catabolism
2014A engenharia metabólica é uma área emergente que visa o aperfeiçoamento de vias metabólicas para produção de compostos valiosos. A produção mundial de casca de frutos cítricos é estimada em 15,000,000 de toneladas por ano, e o seu descarte causa problemas ambientais. O principal constituinte da casca de frutos cítricos é o ácido D-galacturónico.
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HEXURONIC ACID, HEXOSAMINE, AND RADIOSULPHATE UPTAKE IN OVARIES OF MYXOEDEMATOUS RABBITS
Acta Endocrinologica, 1962ABSTRACT One month after radical surgical thyroidectomy, 13 out of 28 rabbits had raspberry-like polycystic ovaries. Thyroidectomy increased the content of water, hexuronic acid, and the in vivo uptake of 35S-labeled sulphate in acid mucopolysaccharides.
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