Evaluation of a dye-decolorizing peroxidase from Comamonas serinivorans for lignin valorization potentials

Copyright © 2023 Elsevier B.V. All rights reserved..

Although dye-decolourising peroxidases (DyPs) are well-known for lignin degradation, a comprehensive understanding of their mechanism remains unclear. Therefore, studying the mechanism of lignin degradation by DyPs is necessary for industrial applications and enzyme engineering. In this study, a dye-decolourising peroxidase (CsDyP) gene from C. serinivorans was heterologously expressed and studied for its lignin degradation potential. Molecular docking analysis predicted the binding of 2, 2-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), veratryl alcohol (VA), 2, 6-dimethylphenol (2, 6- DMP), guaiacol (GUA), and lignin to the substrate-binding pocket of CsDyP. Evaluation of the enzymatic properties showed that CsDyP requires pH 4.0 and 30 °C for optimal activity and has a high affinity for ABTS. In addition, CsDyP is stable over a wide range of temperatures and pH and can tolerate 5.0 mM organic solvents. Low NaCl concentrations promoted CsDyP activity. Further, CsDyP significantly reduced the chemical oxygen demand decolourised alkali lignin (AL) and milled wood lignin (MWL). CsDyP targets the β-O-4, CO, and CC bonds linking lignin's G, S, and H units to depolymerize and produce aromatic compounds. Overall, this study delivers valuable insights into the lignin degradation mechanism of CsDyP, which can benefit its industrial applications and lignin valorization.

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:253

Enthalten in:

International journal of biological macromolecules - 253(2023), Pt 4 vom: 31. Dez., Seite 127117

Sprache:

Englisch

Beteiligte Personen:

Sethupathy, Sivasamy [VerfasserIn]
Xie, Rongrong [VerfasserIn]
Liang, Nian [VerfasserIn]
Shafreen, Raja Mohamed Beema [VerfasserIn]
Ali, Mohamed Yassin [VerfasserIn]
Zhuang, Zhipeng [VerfasserIn]
Zhe, Liang [VerfasserIn]
Zahoor [VerfasserIn]
Yong, Yang-Chun [VerfasserIn]
Zhu, Daochen [VerfasserIn]

Links:

Volltext

Themen:

2,2'-azino-di-(3-ethylbenzothiazoline)-6-sulfonic acid
28752-68-3
9005-53-2
Alkali lignin
Coloring Agents
Comamonas serinivorans
Dye-decolorizing peroxidases
EC 1.11.1.-
EC 1.11.1.7
Heterologous expression
Journal Article
Lignin
Lignin depolymerization
Milled wood lignin
Peroxidase
Peroxidases

Anmerkungen:

Date Completed 29.11.2023

Date Revised 29.11.2023

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.ijbiomac.2023.127117

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM362709238