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3-Deoxy-D-lyxo-heptulosaric acid, a component of the plant cell-wall polysaccharide rhamnogalacturonan-II

Permanent URL:
http://handle.nal.usda.gov/10113/39944
File:
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Abstract:
3-Deoxy-d-lyxo-heptulosaric acid (DHA) has been identified as a component of plant cell walls. This sugar was found in the pectic polysaccharide rhmanogalacturonan-II as a component of the disaccharide β-l-Araf-(1to5)-d-DHAp. The structural formula and linkage position of DHA were determined by mass spectrometry of several derivatives. The lyxo configuration was determined by 1H-n.m.r. spectroscopy of a derivative of the isolated disaccharide. The d configuration was determined by partial degradation of DHA to l-glyceric acid. DHA was found to be present in the primary cell walls of many higher plants, including several dicots, two monocots, and a gymnosperm, but was not detected in two bacterial lipopolysaccharides.
Author(s):
Stevenson, Thomas T. , Darvill, Alan G. , Albersheim, Peter
Note:
Includes references
Source:
Carbohydrate research 1988 Aug. 15, v. 179
Language:
English
Year:
1988
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Rights:
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.