In-cell protein NMR and protein leakage
β Scribed by Christopher O. Barnes; Gary J. Pielak
- Book ID
- 105358180
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 307 KB
- Volume
- 79
- Category
- Article
- ISSN
- 0887-3585
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β¦ Synopsis
Abstract
Inβcell nuclear magnetic resonance spectroscopy is a tool for studying proteins under physiologically relevant conditions. In some instances, however, protein signals from leaked protein are observed in the liquid surrounding the cells. Here, we examine the expression of four proteins in Escherichia coli. We describe the controls that should be used for inβcell NMR experiments and show that leakage is likely when the protein being studied exceeds βΌ20% of the total cellular protein. Proteins 2011. Β© 2010 WileyβLiss, Inc.
π SIMILAR VOLUMES
Isotope labelling is a very powerful tool in NMR studies of proteins and has been employed in various ways for over 40 years. 15N and 13C incorporation, using recombinant expression systems, is now commonplace because heteronuclear experiments assist with the fundamental problems of peak resolution