The durability of enzymes in harsh conditions can be enhanced by immobilization within metal-organic frameworks
(MOFs) via a process called biomimetic mineralisation. Zeolitic imidazolate framework-8 (ZIF-8) is widely used as a
protective coating to encapsulate proteins. The formation of nucleation centres and further biocomposite particle
growth is entirely governed by the pure electrostatic interactions between the protein’s surface and positively charged
Zn(II) metal ions. It was previously shown that enhancing these electrostatic interactions by a chemical modification
of surface amino acid residues can lead to a rapid biocomposite formation. However, a chemical modification of
carbohydrate components by periodate oxidation for glycoproteins can serve as an alternative strategy. In the present
study, an industrially important enzyme glucose oxidase (GOx) was selected as a model system. Periodate oxidation
of GOx by 2.5 mM sodium periodate increased negative charge on the en...zyme molecule. Biomineralization
experiments with oxidized GOx resulted in higher specific activity, effectiveness factor, and higher thermostability of
the ZIF-8 biocomposites.
TY - CONF
AU - Ristić, Predrag
AU - Stanišić, Marija
AU - Đokić, Veljko
AU - Balaž, Ana Marija
AU - Mitić, Dragana
AU - Prodanović, Radivoje
AU - Todorović, Tamara
PY - 2022
UR - http://cherry.chem.bg.ac.rs/handle/123456789/5753
AB - The durability of enzymes in harsh conditions can be enhanced by immobilization within metal-organic frameworks
(MOFs) via a process called biomimetic mineralisation. Zeolitic imidazolate framework-8 (ZIF-8) is widely used as a
protective coating to encapsulate proteins. The formation of nucleation centres and further biocomposite particle
growth is entirely governed by the pure electrostatic interactions between the protein’s surface and positively charged
Zn(II) metal ions. It was previously shown that enhancing these electrostatic interactions by a chemical modification
of surface amino acid residues can lead to a rapid biocomposite formation. However, a chemical modification of
carbohydrate components by periodate oxidation for glycoproteins can serve as an alternative strategy. In the present
study, an industrially important enzyme glucose oxidase (GOx) was selected as a model system. Periodate oxidation
of GOx by 2.5 mM sodium periodate increased negative charge on the enzyme molecule. Biomineralization
experiments with oxidized GOx resulted in higher specific activity, effectiveness factor, and higher thermostability of
the ZIF-8 biocomposites.
C3 - 19th International Conference on Nanosciences & Nanotechnologies, 5-8 July 2022, Thessaloniki, Greece
T1 - Periodate oxidized glucose oxidase@ZIF-8 nanocomposite
SP - 138
EP - 138
UR - https://hdl.handle.net/21.15107/rcub_cherry_5753
ER -
@conference{
author = "Ristić, Predrag and Stanišić, Marija and Đokić, Veljko and Balaž, Ana Marija and Mitić, Dragana and Prodanović, Radivoje and Todorović, Tamara",
year = "2022",
abstract = "The durability of enzymes in harsh conditions can be enhanced by immobilization within metal-organic frameworks
(MOFs) via a process called biomimetic mineralisation. Zeolitic imidazolate framework-8 (ZIF-8) is widely used as a
protective coating to encapsulate proteins. The formation of nucleation centres and further biocomposite particle
growth is entirely governed by the pure electrostatic interactions between the protein’s surface and positively charged
Zn(II) metal ions. It was previously shown that enhancing these electrostatic interactions by a chemical modification
of surface amino acid residues can lead to a rapid biocomposite formation. However, a chemical modification of
carbohydrate components by periodate oxidation for glycoproteins can serve as an alternative strategy. In the present
study, an industrially important enzyme glucose oxidase (GOx) was selected as a model system. Periodate oxidation
of GOx by 2.5 mM sodium periodate increased negative charge on the enzyme molecule. Biomineralization
experiments with oxidized GOx resulted in higher specific activity, effectiveness factor, and higher thermostability of
the ZIF-8 biocomposites.",
journal = "19th International Conference on Nanosciences & Nanotechnologies, 5-8 July 2022, Thessaloniki, Greece",
title = "Periodate oxidized glucose oxidase@ZIF-8 nanocomposite",
pages = "138-138",
url = "https://hdl.handle.net/21.15107/rcub_cherry_5753"
}
Ristić, P., Stanišić, M., Đokić, V., Balaž, A. M., Mitić, D., Prodanović, R.,& Todorović, T.. (2022). Periodate oxidized glucose oxidase@ZIF-8 nanocomposite. in 19th International Conference on Nanosciences & Nanotechnologies, 5-8 July 2022, Thessaloniki, Greece, 138-138.
https://hdl.handle.net/21.15107/rcub_cherry_5753
Ristić P, Stanišić M, Đokić V, Balaž AM, Mitić D, Prodanović R, Todorović T. Periodate oxidized glucose oxidase@ZIF-8 nanocomposite. in 19th International Conference on Nanosciences & Nanotechnologies, 5-8 July 2022, Thessaloniki, Greece. 2022;:138-138.
https://hdl.handle.net/21.15107/rcub_cherry_5753 .
Ristić, Predrag, Stanišić, Marija, Đokić, Veljko, Balaž, Ana Marija, Mitić, Dragana, Prodanović, Radivoje, Todorović, Tamara, "Periodate oxidized glucose oxidase@ZIF-8 nanocomposite" in 19th International Conference on Nanosciences & Nanotechnologies, 5-8 July 2022, Thessaloniki, Greece (2022):138-138,
https://hdl.handle.net/21.15107/rcub_cherry_5753 .
