Sitosterol-β-glucoside as Primer for Cellulose Synthesis in Plants

@article{Peng2002SitosterolglucosideAP,
  title={Sitosterol-$\beta$-glucoside as Primer for Cellulose Synthesis in Plants},
  author={Liangcai Peng and Y. Kawagoe and Pat Hogan and D. Delmer},
  journal={Science},
  year={2002},
  volume={295},
  pages={147 - 150}
}
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… Expand
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The lipid origin of cellulose.
  • W. Peters
  • Medicine, Biology
  • Trends in cell biology
  • 2002
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It is concluded that SG formed from sitosterol and UDP-glucose acts as a primer for glucan chain production, and provides a role also for the korrigan cellulase, which has been implicated in cellulose synthesis. Expand
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