Sitosterol-β-glucoside as Primer for Cellulose Synthesis in Plants
- 4 January 2002
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 295 (5552) , 147-150
- https://doi.org/10.1126/science.1064281
Abstract
Cellulose synthesis in plants requires β-1,4-glucan chain initiation, elongation, and termination. The process of chain elongation is likely to be distinct from the process of chain initiation. We demonstrate that a CesA glucosyltransferase initiates glucan polymerization by using sitosterol-β-glucoside (SG) as primer. Cotton fiber membranes synthesize sitosterol-cellodextrins (SCDs) from SG and uridine 5′-diphosphate–glucose (UDP-Glc) under conditions that also favor cellulose synthesis. The cellulase encoded by the Korrigan ( Kor ) gene, required for cellulose synthesis in plants, may function to cleave SG from the growing polymer chain.Keywords
This publication has 24 references indexed in Scilit:
- Characterization of a Functional Soluble Form of a Brassica napus Membrane-Anchored Endo-1,4-β-Glucanase Heterologously Expressed in Pichia pastorisPlant Physiology, 2001
- The Experimental Herbicide CGA 325′615 Inhibits Synthesis of Crystalline Cellulose and Causes Accumulation of Non-Crystalline β-1,4-Glucan Associated with CesA ProteinPlant Physiology, 2001
- Temperature-Sensitive Alleles of RSW2 Link the KORRIGAN Endo-1,4-β-Glucanase to Cellulose Synthesis and Cytokinesis in ArabidopsisPlant Physiology, 2001
- Cellulose: How many cellulose synthases to make a plant?Current Biology, 2001
- Compartmentation and topology of glucosylceramide synthesisBiochemical Society Transactions, 2000
- Multiple Cellulose Synthase Catalytic Subunits Are Required for Cellulose Synthesis in ArabidopsisPlant Cell, 2000
- Chitin Oligosaccharide Synthesis by Rhizobia and Zebrafish Embryos Starts by Glycosyl Transfer to O4 of the Reducing-Terminal ResidueBiochemistry, 1999
- In vitro synthesis of a microfibrillar (1→3)‐β‐glucan by a ryegrass (Lolium multiflorum) endosperm (1→3)‐β‐glucan synthase enriched by product entrapmentThe Plant Journal, 1995
- β-Glucoside Activators of Mung Bean UDP-Glucose: β-Glucan SynthasePlant Physiology, 1988
- Isolation and structure of diglycosylsterols and triglycosylsterols in rice branBiochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism, 1979