Popović, Nikolina

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orcid::0000-0001-6774-3739
  • Popović, Nikolina (3)
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Author's Bibliography

Biomimetic mineralisation of periodate oxidized glucose oxidase

Stanišić, Marija; Popović, Nikolina; Ristić, Predrag; Balaž, Ana Marija; Senćanski, Milan; Prodanović, Radivoje; Todorović, Tamara

(Beograd : Biohemijsko društvo Srbije, 2021)

TY  - CONF
AU  - Stanišić, Marija
AU  - Popović, Nikolina
AU  - Ristić, Predrag
AU  - Balaž, Ana Marija
AU  - Senćanski, Milan
AU  - Prodanović, Radivoje
AU  - Todorović, Tamara
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5564
AB  - Glucose oxidase (GOx) is an enzyme that belongs to a group of oxidoreductases. This enzyme catalyzes the oxidation of glucose to gluconic acid using molecular oxygen as an electron acceptor. Glucose oxidase contains carbohydrates in its structure, most often mannose and glucose (11-13%) 1. Durability of GOx in harsh conditions can be enhanced by encapsulation within metal–organic frameworks via a process called biomimetic mineralisation. We demonstrate that chemical modification of carbohydrate parts on the protein surface by periodate oxidation is an effective method for control of biomimetic mineralisation by zeolitic imidazolate framework-8 (ZIF-8). Obtained GOx-ZIF-8 biocomposite had the higher half-life at 65oC, and higher specific activity than native GOx.
PB  - Beograd : Biohemijsko društvo Srbije
C3  - Tenth Conference of Serbian Biochemical Society, 24 September 2021, Kragujevac, Book of Abstracts
T1  - Biomimetic mineralisation of periodate oxidized glucose oxidase
SP  - 148
EP  - 148
UR  - https://hdl.handle.net/21.15107/rcub_cherry_5748
ER  - 
@conference{
author = "Stanišić, Marija and Popović, Nikolina and Ristić, Predrag and Balaž, Ana Marija and Senćanski, Milan and Prodanović, Radivoje and Todorović, Tamara",
year = "2021",
abstract = "Glucose oxidase (GOx) is an enzyme that belongs to a group of oxidoreductases. This enzyme catalyzes the oxidation of glucose to gluconic acid using molecular oxygen as an electron acceptor. Glucose oxidase contains carbohydrates in its structure, most often mannose and glucose (11-13%) 1. Durability of GOx in harsh conditions can be enhanced by encapsulation within metal–organic frameworks via a process called biomimetic mineralisation. We demonstrate that chemical modification of carbohydrate parts on the protein surface by periodate oxidation is an effective method for control of biomimetic mineralisation by zeolitic imidazolate framework-8 (ZIF-8). Obtained GOx-ZIF-8 biocomposite had the higher half-life at 65oC, and higher specific activity than native GOx.",
publisher = "Beograd : Biohemijsko društvo Srbije",
journal = "Tenth Conference of Serbian Biochemical Society, 24 September 2021, Kragujevac, Book of Abstracts",
title = "Biomimetic mineralisation of periodate oxidized glucose oxidase",
pages = "148-148",
url = "https://hdl.handle.net/21.15107/rcub_cherry_5748"
}
Stanišić, M., Popović, N., Ristić, P., Balaž, A. M., Senćanski, M., Prodanović, R.,& Todorović, T.. (2021). Biomimetic mineralisation of periodate oxidized glucose oxidase. in Tenth Conference of Serbian Biochemical Society, 24 September 2021, Kragujevac, Book of Abstracts
Beograd : Biohemijsko društvo Srbije., 148-148.
https://hdl.handle.net/21.15107/rcub_cherry_5748
Stanišić M, Popović N, Ristić P, Balaž AM, Senćanski M, Prodanović R, Todorović T. Biomimetic mineralisation of periodate oxidized glucose oxidase. in Tenth Conference of Serbian Biochemical Society, 24 September 2021, Kragujevac, Book of Abstracts. 2021;:148-148.
https://hdl.handle.net/21.15107/rcub_cherry_5748 .
Stanišić, Marija, Popović, Nikolina, Ristić, Predrag, Balaž, Ana Marija, Senćanski, Milan, Prodanović, Radivoje, Todorović, Tamara, "Biomimetic mineralisation of periodate oxidized glucose oxidase" in Tenth Conference of Serbian Biochemical Society, 24 September 2021, Kragujevac, Book of Abstracts (2021):148-148,
https://hdl.handle.net/21.15107/rcub_cherry_5748 .

Expression, purification and characterization of cellobiose dehydrogenase mutants from Phanerochaete chrysosporium in Pichia pastoris KM71H strain

Balaž, Ana Marija; Blažić, Marija; Popović, Nikolina; Prodanović, Olivera; Ostafe, Raluca; Fischer, Rainer; Prodanović, Radivoje

(Belgrade : Serbian Chemical Society, 2020)

TY  - JOUR
AU  - Balaž, Ana Marija
AU  - Blažić, Marija
AU  - Popović, Nikolina
AU  - Prodanović, Olivera
AU  - Ostafe, Raluca
AU  - Fischer, Rainer
AU  - Prodanović, Radivoje
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3880
AB  - Production of soluble cellobiose dehydrogenase (CDH) mutant proteins previously evolved on the surface of S. cerevisiae yeast cells was established for use in biosensors and biofuel cells. For this purpose, mutant cdh genes tm (D20N, A64T, V592M), H5 (D20N, V22A, A64T, V592M) and H9 (D20N, A64T, T84A, A261P, V592M, E674G, N715S) were cloned to pPICZα plasmid and transformed into Pichia pastoris KM71H strain for high expression in a soluble form and kinetic characterization. After 6 days of expression under methanol induction, the CDHs were purified by ultrafiltration, ion- -exchange chromatography and gel filtration. Sodium dodecyl sulfate electrophoresis confirmed the purity and presence of a single protein band at a molecular weight of 100 kDa. Kinetic characterization showed that the H5 mutant had the highest catalytic constant of 43.5 s-1 for lactose, while the mutant H9 showed the highest specificity constant for lactose of 132 mM-1 s-1. All three mutant proteins did not change the pH optimum that was between 4.5 and 5.5. Compared to the previously obtained wild types and mutants of CDH from Phanerochaete chrysosporium, the variants reported in this article had higher activity and specificity that together with high protein expression rate in P. pastoris, makes them good candidates for use in biotechnology for lactobionic acid production and biosensor manufacture.
AB  - У циљу употребе у биосензорима и биогоривним ћелијама, успостављена је производња
растворних облика целобиоза дехидрогеназе (CDH) претходно еволуираних на површини
квашчевих ћелија S. cerevisiae. У ту сврху су мутанти CDH, tm (D20N, A64T, V592M), H5
(D20N, V22A, A64T, V592M) и H9 (D20N, A64T, T84A, A261P, V592M, E674G, N715S)
клонирани у pPICZα плазмид и трансформисани у Pichia pastoris KM71H сој за високу
експресију у растворном облику и кинетичку карактеризацију. После 6 дана експресије под
индукцијом метанолом, мутанти су пречишћени ултрафилтрацијом, јоноизмењивачком
хроматографијом и гел-филтрацијом. SDS електрофореза је потврдила чистоћу уз присуство
једне протеинске траке молекулскe масe од 100 kDa. Кинетичка карактеризација је показала
да H5 мутирани протеин поседује највећу каталитичку константу од 43,5 s-1 за лактозу, док
је H9 имао највећу константу специфичности за лактозу од 132 mM-1 s-1. Сва три мутирана
протеина су имала неизмењен pH оптимум који је био у опсегу од 4,5 до 5,5. У поређењу са
претходно добијеним природним и мутантним облицима CDH протеина из Phanerochaete
chrysosporium, облици приказани у овом раду имају већу активност и специфичност, што их,
повезано са високом експресијом протеина у P. Pastoris, чини добрим кандидатима за упо-
требу у биотехнологији за производњу лактобионске киселине и биосензора.
PB  - Belgrade : Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Expression, purification and characterization of cellobiose dehydrogenase mutants from Phanerochaete chrysosporium in Pichia pastoris KM71H strain
T1  - Ekspresija, prečišćavanje i karakterizacija mutanata celobioza - dehidrogenaze iz Phanerochaete chrysosporium u Pichia pastoris KM71H soju
VL  - 85
IS  - 1
SP  - 25
EP  - 35
DO  - 10.2298/JSC190320058B
ER  - 
@article{
author = "Balaž, Ana Marija and Blažić, Marija and Popović, Nikolina and Prodanović, Olivera and Ostafe, Raluca and Fischer, Rainer and Prodanović, Radivoje",
year = "2020",
abstract = "Production of soluble cellobiose dehydrogenase (CDH) mutant proteins previously evolved on the surface of S. cerevisiae yeast cells was established for use in biosensors and biofuel cells. For this purpose, mutant cdh genes tm (D20N, A64T, V592M), H5 (D20N, V22A, A64T, V592M) and H9 (D20N, A64T, T84A, A261P, V592M, E674G, N715S) were cloned to pPICZα plasmid and transformed into Pichia pastoris KM71H strain for high expression in a soluble form and kinetic characterization. After 6 days of expression under methanol induction, the CDHs were purified by ultrafiltration, ion- -exchange chromatography and gel filtration. Sodium dodecyl sulfate electrophoresis confirmed the purity and presence of a single protein band at a molecular weight of 100 kDa. Kinetic characterization showed that the H5 mutant had the highest catalytic constant of 43.5 s-1 for lactose, while the mutant H9 showed the highest specificity constant for lactose of 132 mM-1 s-1. All three mutant proteins did not change the pH optimum that was between 4.5 and 5.5. Compared to the previously obtained wild types and mutants of CDH from Phanerochaete chrysosporium, the variants reported in this article had higher activity and specificity that together with high protein expression rate in P. pastoris, makes them good candidates for use in biotechnology for lactobionic acid production and biosensor manufacture., У циљу употребе у биосензорима и биогоривним ћелијама, успостављена је производња
растворних облика целобиоза дехидрогеназе (CDH) претходно еволуираних на површини
квашчевих ћелија S. cerevisiae. У ту сврху су мутанти CDH, tm (D20N, A64T, V592M), H5
(D20N, V22A, A64T, V592M) и H9 (D20N, A64T, T84A, A261P, V592M, E674G, N715S)
клонирани у pPICZα плазмид и трансформисани у Pichia pastoris KM71H сој за високу
експресију у растворном облику и кинетичку карактеризацију. После 6 дана експресије под
индукцијом метанолом, мутанти су пречишћени ултрафилтрацијом, јоноизмењивачком
хроматографијом и гел-филтрацијом. SDS електрофореза је потврдила чистоћу уз присуство
једне протеинске траке молекулскe масe од 100 kDa. Кинетичка карактеризација је показала
да H5 мутирани протеин поседује највећу каталитичку константу од 43,5 s-1 за лактозу, док
је H9 имао највећу константу специфичности за лактозу од 132 mM-1 s-1. Сва три мутирана
протеина су имала неизмењен pH оптимум који је био у опсегу од 4,5 до 5,5. У поређењу са
претходно добијеним природним и мутантним облицима CDH протеина из Phanerochaete
chrysosporium, облици приказани у овом раду имају већу активност и специфичност, што их,
повезано са високом експресијом протеина у P. Pastoris, чини добрим кандидатима за упо-
требу у биотехнологији за производњу лактобионске киселине и биосензора.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Expression, purification and characterization of cellobiose dehydrogenase mutants from Phanerochaete chrysosporium in Pichia pastoris KM71H strain, Ekspresija, prečišćavanje i karakterizacija mutanata celobioza - dehidrogenaze iz Phanerochaete chrysosporium u Pichia pastoris KM71H soju",
volume = "85",
number = "1",
pages = "25-35",
doi = "10.2298/JSC190320058B"
}
Balaž, A. M., Blažić, M., Popović, N., Prodanović, O., Ostafe, R., Fischer, R.,& Prodanović, R.. (2020). Expression, purification and characterization of cellobiose dehydrogenase mutants from Phanerochaete chrysosporium in Pichia pastoris KM71H strain. in Journal of the Serbian Chemical Society
Belgrade : Serbian Chemical Society., 85(1), 25-35.
https://doi.org/10.2298/JSC190320058B
Balaž AM, Blažić M, Popović N, Prodanović O, Ostafe R, Fischer R, Prodanović R. Expression, purification and characterization of cellobiose dehydrogenase mutants from Phanerochaete chrysosporium in Pichia pastoris KM71H strain. in Journal of the Serbian Chemical Society. 2020;85(1):25-35.
doi:10.2298/JSC190320058B .
Balaž, Ana Marija, Blažić, Marija, Popović, Nikolina, Prodanović, Olivera, Ostafe, Raluca, Fischer, Rainer, Prodanović, Radivoje, "Expression, purification and characterization of cellobiose dehydrogenase mutants from Phanerochaete chrysosporium in Pichia pastoris KM71H strain" in Journal of the Serbian Chemical Society, 85, no. 1 (2020):25-35,
https://doi.org/10.2298/JSC190320058B . .
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Directed Evolution of Cellobiose Dehydrogenase on the Surface of Yeast Cells Using Resazurin-Based Fluorescent Assay

Blažić, Marija; Balaž, Ana Marija; Prodanović, Olivera; Popović, Nikolina; Ostafe, Raluca; Fischer, Rainer; Prodanović, Radivoje

(MDPI, 2019)

TY  - JOUR
AU  - Blažić, Marija
AU  - Balaž, Ana Marija
AU  - Prodanović, Olivera
AU  - Popović, Nikolina
AU  - Ostafe, Raluca
AU  - Fischer, Rainer
AU  - Prodanović, Radivoje
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2875
AB  - Cellobiose dehydrogenase (CDH) from Phanerochaete chrysosporium can be used in
lactobionic acid production, biosensor for lactose, biofuel cells, lignocellulose degradation,
and wound-healing applications. To make it a better biocatalyst, CDH with higher activity in
an immobilized form is desirable. For this purpose, CDH was expressed for the first time on the
surface of S. cerevisiae EBY100 cells in an active form as a triple mutant tmCDH (D20N, A64T,
V592M) and evolved further for higher activity using resazurin-based fluorescent assay. In order to
decrease blank reaction of resazurin with yeast cells and to have linear correlation between enzyme
activity on the cell surface and fluorescence signal, the assay was optimized with respect to resazurin
concentration (0.1 mM), substrate concentration (10mMlactose and 0.08mMcellobiose), and pH (6.0).
Using optimized assay an error prone PCR gene library of tmCDH was screened. Two mutants with
5 (H5) and 7 mutations (H9) were found having two times higher activity than the parent tmCDH
enzyme that already had improved activity compared to wild type CDH whose activity could not be
detected on the surface of yeast cells.
PB  - MDPI
T2  - Applied Sciences
T1  - Directed Evolution of Cellobiose Dehydrogenase on the Surface of Yeast Cells Using Resazurin-Based Fluorescent Assay
VL  - 9
IS  - 7
SP  - 1413
DO  - 10.3390/app9071413
ER  - 
@article{
author = "Blažić, Marija and Balaž, Ana Marija and Prodanović, Olivera and Popović, Nikolina and Ostafe, Raluca and Fischer, Rainer and Prodanović, Radivoje",
year = "2019",
abstract = "Cellobiose dehydrogenase (CDH) from Phanerochaete chrysosporium can be used in
lactobionic acid production, biosensor for lactose, biofuel cells, lignocellulose degradation,
and wound-healing applications. To make it a better biocatalyst, CDH with higher activity in
an immobilized form is desirable. For this purpose, CDH was expressed for the first time on the
surface of S. cerevisiae EBY100 cells in an active form as a triple mutant tmCDH (D20N, A64T,
V592M) and evolved further for higher activity using resazurin-based fluorescent assay. In order to
decrease blank reaction of resazurin with yeast cells and to have linear correlation between enzyme
activity on the cell surface and fluorescence signal, the assay was optimized with respect to resazurin
concentration (0.1 mM), substrate concentration (10mMlactose and 0.08mMcellobiose), and pH (6.0).
Using optimized assay an error prone PCR gene library of tmCDH was screened. Two mutants with
5 (H5) and 7 mutations (H9) were found having two times higher activity than the parent tmCDH
enzyme that already had improved activity compared to wild type CDH whose activity could not be
detected on the surface of yeast cells.",
publisher = "MDPI",
journal = "Applied Sciences",
title = "Directed Evolution of Cellobiose Dehydrogenase on the Surface of Yeast Cells Using Resazurin-Based Fluorescent Assay",
volume = "9",
number = "7",
pages = "1413",
doi = "10.3390/app9071413"
}
Blažić, M., Balaž, A. M., Prodanović, O., Popović, N., Ostafe, R., Fischer, R.,& Prodanović, R.. (2019). Directed Evolution of Cellobiose Dehydrogenase on the Surface of Yeast Cells Using Resazurin-Based Fluorescent Assay. in Applied Sciences
MDPI., 9(7), 1413.
https://doi.org/10.3390/app9071413
Blažić M, Balaž AM, Prodanović O, Popović N, Ostafe R, Fischer R, Prodanović R. Directed Evolution of Cellobiose Dehydrogenase on the Surface of Yeast Cells Using Resazurin-Based Fluorescent Assay. in Applied Sciences. 2019;9(7):1413.
doi:10.3390/app9071413 .
Blažić, Marija, Balaž, Ana Marija, Prodanović, Olivera, Popović, Nikolina, Ostafe, Raluca, Fischer, Rainer, Prodanović, Radivoje, "Directed Evolution of Cellobiose Dehydrogenase on the Surface of Yeast Cells Using Resazurin-Based Fluorescent Assay" in Applied Sciences, 9, no. 7 (2019):1413,
https://doi.org/10.3390/app9071413 . .
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