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Published in: Cellulose 4/2021

06-01-2021 | Original Research

Impacts of cotton linter pulp characteristics on the processivity of glycoside hydrolase family 5 endoglucanase from Volvariella Volvacea

Authors: Shanshan Wu, Xiao Jiang, Huicong Jiang, Shufang Wu, Shaojun Ding, Yongcan Jin

Published in: Cellulose | Issue 4/2021

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Abstract

EG1 from Volvariella volvacea is a processive endoglucanase belonging to glycoside hydrolase family 5. The impacts of cotton linter pulp characteristics, such as degree of polymerization (DP), crystallinity, and the initial cellulose-reducing ends, on the processivity of EG1 were investigated. Three commercial cotton linter pulp with different DP were used in present study. Ball milling was used to alter the crystallinity and DP of cellulose. The results indicate that the crystallinity has the most significant impact on enzyme processivity followed by initial cellulose-reducing ends. Whereas the DP indirectly affects the enzymatic hydrolysis and influenced by the pulp preparation method and conditions. The initial cellulose-reducing ends also affect enzyme adsorption but their impact is not obvious when the crystallinity is very low. These results also demonstrate the endo- and exo-action are both exist for EG1. The processive exo-action can start from the newly created cellulose-reducing ends by endo-action as well as the initial cellulose-reducing ends. The contribution of initial cellulose-reducing ends is affected by its quantity and cellulose crystallinity. A plausible action mode for EG1 is also proposed.

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Appendix
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Literature
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Metadata
Title
Impacts of cotton linter pulp characteristics on the processivity of glycoside hydrolase family 5 endoglucanase from Volvariella Volvacea
Authors
Shanshan Wu
Xiao Jiang
Huicong Jiang
Shufang Wu
Shaojun Ding
Yongcan Jin
Publication date
06-01-2021
Publisher
Springer Netherlands
Published in
Cellulose / Issue 4/2021
Print ISSN: 0969-0239
Electronic ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-020-03665-x

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