TY  - JOUR
AU  - Laketa, Danijela
AU  - Bogdanović, Jelena
AU  - Prodanović, Radivoje
AU  - Kalauzi, Aleksandar
AU  - Radotić, Ksenija
PY  - 2010
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1089
AB  - We studied the dependence of peroxidase (POD) activity on pH in crude extract of Picea omorika (Pane.) Purkinye needles and in its acidic and basic fractions, obtained by ion exchange chromatography. Nonlinear regression was applied on the activity data with pH as the explaining variable, using the Levenberg-Marquardt algorithm. Studying crude extract at three different temperatures, the shape of the simulated activity/pH dependences indicated an existence of two components, which was confirmed by mathematical modeling. The kinetic parameters Act(0) K(EH) and K(EOH) of both components are presented. The curves and pH optima shifted under increasing temperatures towards lower pH values, which was verified after decomposition. Nonlinear regression detected the presence of two components for both fractions, and there is no considerable difference between their pH optima. Our results show for the first time that the sum of components, each described by the mathematical model employed, can be used to explain the complex pH-related POD activity in the extract with two or more enzyme forms simultaneously active.
PB  - General Physiol And Biophysics, Bratislava
T2  - General Physiology and Biophysics
T1  - The effect of pH on the activity of soluble peroxidase in needles of Serbian spruce (Picea omorika (Panc.) Purkinye): application of a mathematical model
VL  - 29
IS  - 2
SP  - 122
EP  - 128
DO  - 10.4149/gpb_2010_02_122
ER  - 

@article{
author = "Laketa, Danijela and Bogdanović, Jelena and Prodanović, Radivoje and Kalauzi, Aleksandar and Radotić, Ksenija",
year = "2010",
abstract = "We studied the dependence of peroxidase (POD) activity on pH in crude extract of Picea omorika (Pane.) Purkinye needles and in its acidic and basic fractions, obtained by ion exchange chromatography. Nonlinear regression was applied on the activity data with pH as the explaining variable, using the Levenberg-Marquardt algorithm. Studying crude extract at three different temperatures, the shape of the simulated activity/pH dependences indicated an existence of two components, which was confirmed by mathematical modeling. The kinetic parameters Act(0) K(EH) and K(EOH) of both components are presented. The curves and pH optima shifted under increasing temperatures towards lower pH values, which was verified after decomposition. Nonlinear regression detected the presence of two components for both fractions, and there is no considerable difference between their pH optima. Our results show for the first time that the sum of components, each described by the mathematical model employed, can be used to explain the complex pH-related POD activity in the extract with two or more enzyme forms simultaneously active.",
publisher = "General Physiol And Biophysics, Bratislava",
journal = "General Physiology and Biophysics",
title = "The effect of pH on the activity of soluble peroxidase in needles of Serbian spruce (Picea omorika (Panc.) Purkinye): application of a mathematical model",
volume = "29",
number = "2",
pages = "122-128",
doi = "10.4149/gpb_2010_02_122"
}

Laketa, D., Bogdanović, J., Prodanović, R., Kalauzi, A.,& Radotić, K.. (2010). The effect of pH on the activity of soluble peroxidase in needles of Serbian spruce (Picea omorika (Panc.) Purkinye): application of a mathematical model. in General Physiology and Biophysics
General Physiol And Biophysics, Bratislava., 29(2), 122-128.
https://doi.org/10.4149/gpb_2010_02_122

Laketa D, Bogdanović J, Prodanović R, Kalauzi A, Radotić K. The effect of pH on the activity of soluble peroxidase in needles of Serbian spruce (Picea omorika (Panc.) Purkinye): application of a mathematical model. in General Physiology and Biophysics. 2010;29(2):122-128.
doi:10.4149/gpb_2010_02_122 .

Laketa, Danijela, Bogdanović, Jelena, Prodanović, Radivoje, Kalauzi, Aleksandar, Radotić, Ksenija, "The effect of pH on the activity of soluble peroxidase in needles of Serbian spruce (Picea omorika (Panc.) Purkinye): application of a mathematical model" in General Physiology and Biophysics, 29, no. 2 (2010):122-128,
https://doi.org/10.4149/gpb_2010_02_122 . .