Sortase mutants with improved protein thermostability and enzymatic activity obtained by consensus design
© The Author(s) 2020. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissionsoup.com..
Staphylococcus aureus sortase A (SaSrtA) is an enzyme that anchors proteins to the cell surface of Gram-positive bacteria. During the transpeptidation reaction performed by SaSrtA, proteins containing an N-terminal glycine can be covalently linked to another protein with a C-terminal LPXTG motif (X being any amino acid). Since the sortase reaction can be performed in vitro as well, it has found many applications in biotechnology. Although sortase-mediated ligation has many advantages, SaSrtA is limited by its low enzymatic activity and dependence on Ca2+. In our study, we evaluated the thermodynamic stability of the SaSrtA wild type and found the enzyme to be stable. We applied consensus analysis to further improve the enzyme's stability while at the same time enhancing the enzyme's activity. As a result, we found thermodynamically improved, more active and Ca2+-independent mutants. We envision that these new variants can be applied in conjugation reactions in low Ca2+ environments.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2019 |
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| Erschienen: |
2019 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:32 |
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| Enthalten in: |
Protein engineering, design & selection : PEDS - 32(2019), 12 vom: 31. Dez., Seite 555-564 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Wójcik, Magdalena [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Completed 24.08.2020 Date Revised 24.08.2020 published: Print Citation Status MEDLINE |
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| doi: |
10.1093/protein/gzaa018 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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NLM313008493 |
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| 245 | 1 | 0 | |a Sortase mutants with improved protein thermostability and enzymatic activity obtained by consensus design |
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| 500 | |a Citation Status MEDLINE | ||
| 520 | |a © The Author(s) 2020. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissionsoup.com. | ||
| 520 | |a Staphylococcus aureus sortase A (SaSrtA) is an enzyme that anchors proteins to the cell surface of Gram-positive bacteria. During the transpeptidation reaction performed by SaSrtA, proteins containing an N-terminal glycine can be covalently linked to another protein with a C-terminal LPXTG motif (X being any amino acid). Since the sortase reaction can be performed in vitro as well, it has found many applications in biotechnology. Although sortase-mediated ligation has many advantages, SaSrtA is limited by its low enzymatic activity and dependence on Ca2+. In our study, we evaluated the thermodynamic stability of the SaSrtA wild type and found the enzyme to be stable. We applied consensus analysis to further improve the enzyme's stability while at the same time enhancing the enzyme's activity. As a result, we found thermodynamically improved, more active and Ca2+-independent mutants. We envision that these new variants can be applied in conjugation reactions in low Ca2+ environments | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 650 | 4 | |a Staphylococcus aureus sortase A | |
| 650 | 4 | |a Conjugation | |
| 650 | 4 | |a consensus design | |
| 650 | 4 | |a protein engineering | |
| 650 | 4 | |a protein stability | |
| 650 | 7 | |a Bacterial Proteins |2 NLM | |
| 650 | 7 | |a Aminoacyltransferases |2 NLM | |
| 650 | 7 | |a EC 2.3.2.- |2 NLM | |
| 650 | 7 | |a sortase A |2 NLM | |
| 650 | 7 | |a EC 2.3.2.- |2 NLM | |
| 650 | 7 | |a Cysteine Endopeptidases |2 NLM | |
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| 700 | 1 | |a Vázquez Torres, Susana |e verfasserin |4 aut | |
| 700 | 1 | |a Quax, Wim J |e verfasserin |4 aut | |
| 700 | 1 | |a Boersma, Ykelien L |e verfasserin |4 aut | |
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