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Undirectional degradation of valonia cellulose microcrystals subjected to cellulase action
Abstract
Cellulose microcrystals from the alga Valonia macrophysa have been subjected to enzymatic degradation with purified cellulase components from the fungus Trichoderma reesei. Electron microscopy reveals that 1,4‐β‐D‐glucan cellobiohydrolase II erodes only one of the two tips of the microcrystals. This demonstrates not only the exo‐action pattern of the enzyme, but also the parallel packing of the cellulose chains within Valonia cellulose microcrystals. When 1,4‐β‐D‐glucan cellobiohydrolase II is mixed with 1,4‐β‐D‐glucan glucanohydrolase II, several sites of attack are observed, located at defects along the microcrystals. In that case again, the biodegradation is persistently unidirectional and visual evidence is given for the endo‐exo co‐operativity between the two enzymes.
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Citations
Cited by
Substrate and Enzyme Characteristics that Limit Cellulose Hydrolysis
Mansfield, S. D., Mooney, C., & Saddler, J. N. (1999) · Biotechnology Progress · doi:10.1021/bp9900864 · Cited by 869
Payne, C. M., Knott, B. C., Mayes, H. B., Hansson, H., Himmel, M. E., Sandgren, M., Ståhlberg, J., & Beckham, G. T. (2015) · Chemical Reviews · doi:10.1021/cr500351c · Cited by 855
Structure and Function of Plant Cell Walls
BACIC, A., HARRIS, P. J., & STONE, B. A. (1988) · The Biochemistry of Plants · doi:10.1016/b978-0-08-092615-5.50014-x · Cited by 585
Structure and properties of the cellulose microfibril
Nishiyama, Y. (2009) · Journal of Wood Science · doi:10.1007/s10086-009-1029-1 · Cited by 567
Cellulose biosynthesis and function in bacteria
Ross, P., Mayer, R., & Benziman, M. (1991) · Microbiological Reviews · doi:10.1128/mmbr.55.1.35-58.1991 · Cited by 1,231
“The new techniques recently applied to demonstrating the polarity of isolated cellulose I microfibrils (35, 88) may ultimately be used in determining the direction of polyglucan chain growth.”
Method
Metadata
- Authors
- Chanzy, H., & Henrissat, B.
- Venue
- FEBS Letters
- Publisher
- Wiley
- Published
- 1985-05-20
- Volume
- 184
- Issue
- 2
- Pages
- 285-288
- ISSN
- 0014-5793 (ISSN-L)
- 1873-3468
- OpenAlex
- W2071756784
- Cited by
- 183
- References
- 0
- FWCI
- 5.39
- Type
- journal article
- Language
- en
- Open access
- closed
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- Chanzy, H., & Henrissat, B. (1985). Undirectional degradation of valonia cellulose microcrystals subjected to cellulase action. FEBS Letters. https://doi.org/10.1016/0014-5793(85)80623-2
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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