Characterization of FCXTH2, a novel xyloglucan endotransglycosylase/hydrolase enzyme of chilean strawberry with hydrolase activity

12Citations
Citations of this article
21Readers
Mendeley users who have this article in their library.

Abstract

Xyloglucan endotransglycosylase/hydrolases (XTHs) are cell wall enzymes with hydrolase (XEH) and/or endotransglycosylase (XET) activities. As they are involved in the modification of the xyloglucans, a type of hemicellulose present in the cell wall, they are believed to be very important in different processes, including growth, development, and fruit ripening. Previous studies suggest that XTHs might play a key role in development and ripening of Fragaria chiloensis fruit, and its characterization is pending. Therefore, in order to provide a biochemical characterization of the FcXTH2 enzyme to explain its possible role in strawberry development, the molecular cloning and the heterologous expression of FcXTH2 were performed. The recombinant FcXTH2 was active and displayed mainly XEH activity. The optimal pH and temperature are 5.5 and 37 °C, respectively. A KM value of 0.029 mg mL−1 was determined. Additionally, its protein structural model was built through comparative modeling methodology. The model showed a typically β-jelly-roll type folding in which the catalytic motif was oriented towards the FcXTH2 central cavity. Using molecular docking, protein-ligand interactions were explored, finding better interaction with xyloglucan than with cellulose. The data provided groundwork for understanding, at a molecular level, the enzymatic mechanism of FcXTH2, an important enzyme acting during the development of the Chilean strawberry.

Cite

CITATION STYLE

APA

Morales-Quintana, L., Beltrán, D., Mendez-Yañez, Á., Valenzuela-Riffo, F., Herrera, R., & Moya-León, M. A. (2020). Characterization of FCXTH2, a novel xyloglucan endotransglycosylase/hydrolase enzyme of chilean strawberry with hydrolase activity. International Journal of Molecular Sciences, 21(9). https://doi.org/10.3390/ijms21093380

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free