Structure of plant cell walls. XI. Glucuronoarabinoxylan, a second hemicellulose in the primary cell walls of suspension-cultured sycamore cells
The isolation, purification, and partial characterization of a glucuronoarabinoxylan, a previously unobserved component of the primary cell walls of dicotyledonous plants, are described. The glucuronoarabinoxylan constitutes approximately 5% of the primary walls of suspension-cultured sycamore cells. This glucuronoarabinoxylan possesses many of the structural characteristics of analogous polysaccharides that have been isolated from the primary and secondary cell walls of monocots as well as from the secondary cell walls of dicots. The glucuronoarabinoxylan of primary dicot cell walls has a linear ..beta..-1,4-linked D-xylopyranosyl backbone with both neutral and acidic sidechains attached at intervals along its length. The acidic sidechains are terminated with glucuronosyl or 4-O-methyl glucuronosyl residues, whereas the neutral sidechains are composed of arabinosyl and/or xylosyl residues.
- Research Organization:
- Univ. of Colorado, Boulder
- OSTI ID:
- 6603041
- Journal Information:
- Plant Physiol.; (United States), Journal Name: Plant Physiol.; (United States) Vol. 66:6; ISSN PLPHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
550800* -- Morphology
59 BASIC BIOLOGICAL SCIENCES
ALDEHYDES
BIOASSAY
CARBOHYDRATES
CARBOXYLIC ACIDS
CELL CONSTITUENTS
CELL WALL
CHEMICAL ANALYSIS
CHROMATOGRAPHY
CONFIGURATION
DATA
ENZYMES
GLUCURONIC ACID
HEMICELLULOSE
HYDROXY ACIDS
INFORMATION
MOLECULAR STRUCTURE
MOLECULAR WEIGHT
MORPHOLOGY
ORGANIC ACIDS
ORGANIC COMPOUNDS
PLANT CELLS
PLANTS
POLYSACCHARIDES
QUANTITATIVE CHEMICAL ANALYSIS
SACCHARIDES
SEPARATION PROCESSES
STRUCTURAL CHEMICAL ANALYSIS
SYCAMORES
TREES
XYLANS