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The thermal stability of the external invertase isoforms from Saccharomyces cerevisiae correlates with the surface charge density

Authorized Users Only
2012
Authors
Anđelković, Uroš
Theisgen, Stephan
Scheidt, Holger A.
Petkovic, Marijana
Huster, Daniel
Vujčić, Zoran
Article (Published version)
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Abstract
Understanding the effect of surface charge on the stability of proteins is one prerequisite for "tailoring" proteins with increased thermal stability. Here, we investigated the origin of the altered thermal stability observed between the four recently isolated isoforms (EINV1-EINV4) of external invertase. External invertase from yeast Saccharomyces cerevisiae, a homodimeric glycoprotein, represents a widely used model for studying the influence of the glyco component on protein stability. The stability of the four isoforms of invertase decreases from EINV1 to EINV4, which is accompanied by an increase in negative surface charge density. Mass spectrometry analysis revealed that the isoforms share identical protein parts indicating that the differences in stability are the result of post-translational modifications. P-31 NMR analysis revealed that the isoforms contain negatively charged phosphate groups in diester and monoester forms attached to the glycan part. The total amount of phosp...hate bound to the polymannan component varies between the different isoforms. These results, together with the analysis of the amount of polymannan components, show that negative surface charge density does not entirely depend on the amount of phosphate but rather on its distribution. This suggests that charged groups bound to the glyco-component of a protein can influence the stability of glycoproteins.

Keywords:
Glycoprotein stability / Surface charge / Phosphorylation / Invertase / Isoform
Source:
Biochimie, 2012, 94, 2, 510-515
Publisher:
  • Elsevier France-Editions Scientifiques Medicales Elsevier, Paris
Funding / projects:
  • Production, purification and characterization of enzymes and small molecules and their application as soluble or immobilized in food biotechnology, biofuels production and environmental protection (RS-172048)
  • Deutscher Akademischer Austausch Dienst (DAAD)

DOI: 10.1016/j.biochi.2011.08.020

ISSN: 0300-9084

PubMed: 21906653

WoS: 000300270900027

Scopus: 2-s2.0-84855822854
[ Google Scholar ]
11
10
URI
https://cer.ihtm.bg.ac.rs/handle/123456789/1014
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
IHTM
TY  - JOUR
AU  - Anđelković, Uroš
AU  - Theisgen, Stephan
AU  - Scheidt, Holger A.
AU  - Petkovic, Marijana
AU  - Huster, Daniel
AU  - Vujčić, Zoran
PY  - 2012
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1014
AB  - Understanding the effect of surface charge on the stability of proteins is one prerequisite for "tailoring" proteins with increased thermal stability. Here, we investigated the origin of the altered thermal stability observed between the four recently isolated isoforms (EINV1-EINV4) of external invertase. External invertase from yeast Saccharomyces cerevisiae, a homodimeric glycoprotein, represents a widely used model for studying the influence of the glyco component on protein stability. The stability of the four isoforms of invertase decreases from EINV1 to EINV4, which is accompanied by an increase in negative surface charge density. Mass spectrometry analysis revealed that the isoforms share identical protein parts indicating that the differences in stability are the result of post-translational modifications. P-31 NMR analysis revealed that the isoforms contain negatively charged phosphate groups in diester and monoester forms attached to the glycan part. The total amount of phosphate bound to the polymannan component varies between the different isoforms. These results, together with the analysis of the amount of polymannan components, show that negative surface charge density does not entirely depend on the amount of phosphate but rather on its distribution. This suggests that charged groups bound to the glyco-component of a protein can influence the stability of glycoproteins.
PB  - Elsevier France-Editions Scientifiques Medicales Elsevier, Paris
T2  - Biochimie
T1  - The thermal stability of the external invertase isoforms from Saccharomyces cerevisiae correlates with the surface charge density
VL  - 94
IS  - 2
SP  - 510
EP  - 515
DO  - 10.1016/j.biochi.2011.08.020
ER  - 
@article{
author = "Anđelković, Uroš and Theisgen, Stephan and Scheidt, Holger A. and Petkovic, Marijana and Huster, Daniel and Vujčić, Zoran",
year = "2012",
abstract = "Understanding the effect of surface charge on the stability of proteins is one prerequisite for "tailoring" proteins with increased thermal stability. Here, we investigated the origin of the altered thermal stability observed between the four recently isolated isoforms (EINV1-EINV4) of external invertase. External invertase from yeast Saccharomyces cerevisiae, a homodimeric glycoprotein, represents a widely used model for studying the influence of the glyco component on protein stability. The stability of the four isoforms of invertase decreases from EINV1 to EINV4, which is accompanied by an increase in negative surface charge density. Mass spectrometry analysis revealed that the isoforms share identical protein parts indicating that the differences in stability are the result of post-translational modifications. P-31 NMR analysis revealed that the isoforms contain negatively charged phosphate groups in diester and monoester forms attached to the glycan part. The total amount of phosphate bound to the polymannan component varies between the different isoforms. These results, together with the analysis of the amount of polymannan components, show that negative surface charge density does not entirely depend on the amount of phosphate but rather on its distribution. This suggests that charged groups bound to the glyco-component of a protein can influence the stability of glycoproteins.",
publisher = "Elsevier France-Editions Scientifiques Medicales Elsevier, Paris",
journal = "Biochimie",
title = "The thermal stability of the external invertase isoforms from Saccharomyces cerevisiae correlates with the surface charge density",
volume = "94",
number = "2",
pages = "510-515",
doi = "10.1016/j.biochi.2011.08.020"
}
Anđelković, U., Theisgen, S., Scheidt, H. A., Petkovic, M., Huster, D.,& Vujčić, Z.. (2012). The thermal stability of the external invertase isoforms from Saccharomyces cerevisiae correlates with the surface charge density. in Biochimie
Elsevier France-Editions Scientifiques Medicales Elsevier, Paris., 94(2), 510-515.
https://doi.org/10.1016/j.biochi.2011.08.020
Anđelković U, Theisgen S, Scheidt HA, Petkovic M, Huster D, Vujčić Z. The thermal stability of the external invertase isoforms from Saccharomyces cerevisiae correlates with the surface charge density. in Biochimie. 2012;94(2):510-515.
doi:10.1016/j.biochi.2011.08.020 .
Anđelković, Uroš, Theisgen, Stephan, Scheidt, Holger A., Petkovic, Marijana, Huster, Daniel, Vujčić, Zoran, "The thermal stability of the external invertase isoforms from Saccharomyces cerevisiae correlates with the surface charge density" in Biochimie, 94, no. 2 (2012):510-515,
https://doi.org/10.1016/j.biochi.2011.08.020 . .

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