Advanced search
1 file | 7.95 MB

A quantitative indicator diagram for lytic polysaccharide monooxygenases reveals the role of aromatic surface residues in HjLPMO9A regioselectivity

(2017) PLOS ONE. 12(5).
Author
Organization
Abstract
Lytic polysaccharide monooxygenases ( LPMOs) have changed our understanding of lignocellulosic degradation dramatically over the last years. These metalloproteins catalyze oxidative cleavage of recalcitrant polysaccharides and can act on the C1 and/or C4 position of glycosidic bonds. Structural data have led to several hypotheses, but we are still a long way from reaching complete understanding of the factors that determine their divergent regioselectivity. Site-directed mutagenesis enables the investigation of structure-function relationship in enzymes and will be of major importance in unraveling this intriguing matter. In this context, it is crucial to have an enzyme assay or screening approach with a direct correlation with the desired functionality. LPMOs render this search extra challenging due to their insoluble substrates, complex pattern of reaction products and lack of synthetic standards of most oxidized products. Here, we describe a regioselectivity indicator diagram based on the time-course of only 2 HPAEC-PAD signals. The diagram was successfully used to confirm the hypothesis that aromatic surface residues influence the C1/C4 oxidation ratio in Hypocrea jecorina LPMO9A. Consequently, the diagram should become a valuable tool in the search towards better understanding and engineering of regioselectivity in LPMOs.
Keywords
SUBSTRATE-SPECIFICITY, PODOSPORA-ANSERINA, CRYSTAL-STRUCTURE, CELLULOSE, FAMILY, DEGRADATION, CLEAVAGE, PROTEIN, CONVERSION, DISCOVERY

Downloads

  • journal.pone.0178446.pdf
    • full text
    • |
    • open access
    • |
    • PDF
    • |
    • 7.95 MB

Citation

Please use this url to cite or link to this publication:

Chicago
Danneels, Barbara, Magali Tanghe, Henk-Jan Joosten, Thomas Gundinger, Oliver Spadiut, Ingeborg Stals, and Tom Desmet. 2017. “A Quantitative Indicator Diagram for Lytic Polysaccharide Monooxygenases Reveals the Role of Aromatic Surface Residues in HjLPMO9A Regioselectivity.” Plos One 12 (5).
APA
Danneels, Barbara, Tanghe, M., Joosten, H.-J., Gundinger, T., Spadiut, O., Stals, I., & Desmet, T. (2017). A quantitative indicator diagram for lytic polysaccharide monooxygenases reveals the role of aromatic surface residues in HjLPMO9A regioselectivity. PLOS ONE, 12(5).
Vancouver
1.
Danneels B, Tanghe M, Joosten H-J, Gundinger T, Spadiut O, Stals I, et al. A quantitative indicator diagram for lytic polysaccharide monooxygenases reveals the role of aromatic surface residues in HjLPMO9A regioselectivity. PLOS ONE. 2017;12(5).
MLA
Danneels, Barbara, Magali Tanghe, Henk-Jan Joosten, et al. “A Quantitative Indicator Diagram for Lytic Polysaccharide Monooxygenases Reveals the Role of Aromatic Surface Residues in HjLPMO9A Regioselectivity.” PLOS ONE 12.5 (2017): n. pag. Print.
@article{8545990,
  abstract     = {Lytic polysaccharide monooxygenases ( LPMOs) have changed our understanding of lignocellulosic degradation dramatically over the last years. These metalloproteins catalyze oxidative cleavage of recalcitrant polysaccharides and can act on the C1 and/or C4 position of glycosidic bonds. Structural data have led to several hypotheses, but we are still a long way from reaching complete understanding of the factors that determine their divergent regioselectivity. Site-directed mutagenesis enables the investigation of structure-function relationship in enzymes and will be of major importance in unraveling this intriguing matter. In this context, it is crucial to have an enzyme assay or screening approach with a direct correlation with the desired functionality. LPMOs render this search extra challenging due to their insoluble substrates, complex pattern of reaction products and lack of synthetic standards of most oxidized products. Here, we describe a regioselectivity indicator diagram based on the time-course of only 2 HPAEC-PAD signals. The diagram was successfully used to confirm the hypothesis that aromatic surface residues influence the C1/C4 oxidation ratio in Hypocrea jecorina LPMO9A. Consequently, the diagram should become a valuable tool in the search towards better understanding and engineering of regioselectivity in LPMOs.},
  articleno    = {e0178446},
  author       = {Danneels, Barbara and Tanghe, Magali and Joosten, Henk-Jan and Gundinger, Thomas and Spadiut, Oliver and Stals, Ingeborg and Desmet, Tom},
  issn         = {1932-6203},
  journal      = {PLOS ONE},
  keyword      = {SUBSTRATE-SPECIFICITY,PODOSPORA-ANSERINA,CRYSTAL-STRUCTURE,CELLULOSE,FAMILY,DEGRADATION,CLEAVAGE,PROTEIN,CONVERSION,DISCOVERY},
  language     = {eng},
  number       = {5},
  pages        = {15},
  title        = {A quantitative indicator diagram for lytic polysaccharide monooxygenases reveals the role of aromatic surface residues in HjLPMO9A regioselectivity},
  url          = {http://dx.doi.org/10.1371/journal.pone.0178446},
  volume       = {12},
  year         = {2017},
}

Altmetric
View in Altmetric
Web of Science
Times cited: