Catalysis of oxidative protein folding by small-molecule diselenides
The production of recombinant, disulfide-containing proteins often requires oxidative folding in vitro. Here, we show that diselenides, such as selenoglutathione, catalyze oxidative protein folding by O 2. Substantially lower concentrations of a redox buffer composed of selenoglutathione and the thi...
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| Veröffentlicht in: | Biochemistry (Easton) Jg. 47; H. 27; S. 6985 |
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08.07.2008
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| Abstract | The production of recombinant, disulfide-containing proteins often requires oxidative folding in vitro. Here, we show that diselenides, such as selenoglutathione, catalyze oxidative protein folding by O 2. Substantially lower concentrations of a redox buffer composed of selenoglutathione and the thiol form of glutathione can consequently be used to achieve the same rate and yield of folding as a standard glutathione redox buffer. Further, the low p K a of selenols extends the pH range for folding by selenoglutathione to acidic conditions, where glutathione is inactive. Harnessing the catalytic power of diselenides may thus pave the way for more efficient oxidative protein folding. |
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| AbstractList | The production of recombinant, disulfide-containing proteins often requires oxidative folding in vitro. Here, we show that diselenides, such as selenoglutathione, catalyze oxidative protein folding by O 2. Substantially lower concentrations of a redox buffer composed of selenoglutathione and the thiol form of glutathione can consequently be used to achieve the same rate and yield of folding as a standard glutathione redox buffer. Further, the low p K a of selenols extends the pH range for folding by selenoglutathione to acidic conditions, where glutathione is inactive. Harnessing the catalytic power of diselenides may thus pave the way for more efficient oxidative protein folding.The production of recombinant, disulfide-containing proteins often requires oxidative folding in vitro. Here, we show that diselenides, such as selenoglutathione, catalyze oxidative protein folding by O 2. Substantially lower concentrations of a redox buffer composed of selenoglutathione and the thiol form of glutathione can consequently be used to achieve the same rate and yield of folding as a standard glutathione redox buffer. Further, the low p K a of selenols extends the pH range for folding by selenoglutathione to acidic conditions, where glutathione is inactive. Harnessing the catalytic power of diselenides may thus pave the way for more efficient oxidative protein folding. The production of recombinant, disulfide-containing proteins often requires oxidative folding in vitro. Here, we show that diselenides, such as selenoglutathione, catalyze oxidative protein folding by O 2. Substantially lower concentrations of a redox buffer composed of selenoglutathione and the thiol form of glutathione can consequently be used to achieve the same rate and yield of folding as a standard glutathione redox buffer. Further, the low p K a of selenols extends the pH range for folding by selenoglutathione to acidic conditions, where glutathione is inactive. Harnessing the catalytic power of diselenides may thus pave the way for more efficient oxidative protein folding. |
| Author | Beld, Joris Woycechowsky, Kenneth J Hilvert, Donald |
| Author_xml | – sequence: 1 givenname: Joris surname: Beld fullname: Beld, Joris organization: Laboratorium für Organische Chemie, ETH Zürich, Hönggerberg HCI F339, CH-8093 Zürich, Switzerland – sequence: 2 givenname: Kenneth J surname: Woycechowsky fullname: Woycechowsky, Kenneth J – sequence: 3 givenname: Donald surname: Hilvert fullname: Hilvert, Donald |
| BackLink | https://www.ncbi.nlm.nih.gov/pubmed/18553979$$D View this record in MEDLINE/PubMed |
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| SubjectTerms | Catalysis Glutathione - metabolism Kinetics Oxidation-Reduction Protein Folding Ribonuclease, Pancreatic - chemistry Ribonuclease, Pancreatic - metabolism Selenium Compounds - metabolism |
| Title | Catalysis of oxidative protein folding by small-molecule diselenides |
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