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Preparation of soluble isotopically labeled NKp30, a human natural cytotoxicity receptor, for structural studies using NMR
L. Grave, L. Tůmová, H. Mrázek, D. Kavan, J. Chmelík, O. Vaněk, P. Novák, K. Bezouška,
Jazyk angličtina Země Spojené státy americké
Typ dokumentu časopisecké články, práce podpořená grantem
- MeSH
- bioreaktory MeSH
- chlorid amonný chemie MeSH
- elektroforéza v polyakrylamidovém gelu MeSH
- Escherichia coli chemie genetika metabolismus MeSH
- kodon MeSH
- lidé MeSH
- molekulární sekvence - údaje MeSH
- nukleární magnetická rezonance biomolekulární metody MeSH
- receptor 3 spouštějící přirozenou cytotoxicitu biosyntéza chemie genetika metabolismus MeSH
- rekombinantní proteiny chemie genetika metabolismus MeSH
- rozpustnost MeSH
- sbalování proteinů MeSH
- sekvence aminokyselin MeSH
- sekvence nukleotidů MeSH
- ultracentrifugace MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
Using a codon-optimized gene fragment, we report remarkable yields for extracellular domain of human NK cell receptor (NKp30ex) when produced on M9 minimal medium, even with low (2g/L) glucose concentration. The yields were identical using media containing (15)NH(4)Cl or (15)NH(4)Cl in combination with all-(13)C-d-glucose allowing to produce homogenous soluble monomeric NKp30 in several formats needed for advanced NMR studies. Our optimized protocol now allows to produce routinely 10mg batches of these NKp30ex proteins per 1L of M9 production medium in four working days. The purity and identity of the produced proteins were checked by SDS-PAGE, MALDI MS peptide mapping, and high resolution ion cyclotron resonance MS. Analytical ultracentrifugation confirmed the monomeric status of the produced proteins. Long-term stability of the produced protein proved to be very good allowing its use for NMR studies using elevated temperatures. These studies should reveal further details of the interaction of NKp30 with several of its ligands including target cell surface proteins and heparin-derived oligosaccharides.
Citace poskytuje Crossref.org
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- $a Using a codon-optimized gene fragment, we report remarkable yields for extracellular domain of human NK cell receptor (NKp30ex) when produced on M9 minimal medium, even with low (2g/L) glucose concentration. The yields were identical using media containing (15)NH(4)Cl or (15)NH(4)Cl in combination with all-(13)C-d-glucose allowing to produce homogenous soluble monomeric NKp30 in several formats needed for advanced NMR studies. Our optimized protocol now allows to produce routinely 10mg batches of these NKp30ex proteins per 1L of M9 production medium in four working days. The purity and identity of the produced proteins were checked by SDS-PAGE, MALDI MS peptide mapping, and high resolution ion cyclotron resonance MS. Analytical ultracentrifugation confirmed the monomeric status of the produced proteins. Long-term stability of the produced protein proved to be very good allowing its use for NMR studies using elevated temperatures. These studies should reveal further details of the interaction of NKp30 with several of its ligands including target cell surface proteins and heparin-derived oligosaccharides.
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