Indonesian Journal of Chemistry
Vol 20, No 1 (2020)

Homology Modeling and Structural Dynamics of the Glucose Oxidase

Farhan Azhwin Maulana (Master of Biochemistry Program, Postgraduate School, Bogor Agricultural University, Kampus IPB Dramaga, Bogor 16680, West Java, Indonesia)
Laksmi Ambarsari (Molecular Biology Division, Department of Biochemistry, Bogor Agricultural University, Kampus IPB Dramaga, Bogor 16680, West Java, Indonesia)
Setyanto Tri Wahyudi (Computational Biophysics and Molecular Modeling Research Group, Department of Biophysics, Bogor Agricultural University, Kampus IPB Dramaga, Bogor 16680, West Java, Indonesia)



Article Info

Publish Date
31 Dec 2019

Abstract

Glucose oxidase from Aspergillus niger IPBCC.08.610 (GOD_IPBCC) is a locally sourced flavoenzyme from Indonesia that can potentially be developed in a variety of industrial processes. Although this enzyme has a high activity in catalyzing the redox reactions, the use of this enzyme was still limited to be applied as glucose biosensor. Using information from the amino acid sequences, a computational structure of GOD_IPBCC was therefore designed by homology modeling method using two homologous structures of GOD from protein data bank (1CF3 and 5NIT) as the templates. The quality of the resulting structures was evaluated geometrically for selection of the best model, and subsequently, 50 ns of MD simulations were carried out for the selected model as well as the corresponding template. Results obtained from the validation analysis showed that the 1CF3 template-built structure was selected as the best reliable model. The structural comparison exhibited that the best-modeled structure consisted of two functional domains and three catalytic residues similarly to the corresponding experimental structure. The overall dynamic behavior of the 50 ns of the structure was structurally stable and comparable with that of the positive control both from globally and locally observations. Implications of these stable nature within the best-modeled structure unfold the possibilities in search of notable residues and their roles to enhance enzyme thermostability.

Copyrights © 2020






Journal Info

Abbrev

ijc

Publisher

Subject

Chemical Engineering, Chemistry & Bioengineering Chemistry

Description

Indonesian Journal of Chemistry is an International, peer-reviewed, open access journal that publishes original research articles, review articles, as well as short communication in all areas of chemistry including applied chemistry. The journal is accredited by The Ministry of Research, Technology ...