Abstract
13C Methyl TROSY NMR spectroscopy has emerged as a powerful method for studying the dynamics of large systems such as macromolecular assemblies and membrane proteins. Specific 13C labeling of aliphatic methyl groups and perdeuteration has been limited primarily to proteins expressed in E. coli, preventing studies of many eukaryotic proteins of physiological and biomedical significance. We demonstrate the feasibility of efficient 13C isoleucine d1-methyl labeling in a deuterated background in an established eukaryotic expression host, Pichia pastoris, and show that this method can be used to label the eukaryotic protein actin, which cannot be expressed in bacteria. This approach will enable NMR studies of previously intractable targets.
Original language | English (US) |
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Pages (from-to) | 239-245 |
Number of pages | 7 |
Journal | Journal of biomolecular NMR |
Volume | 62 |
Issue number | 3 |
DOIs | |
State | Published - Jul 1 2015 |
Keywords
- Actin
- Deuteration
- Eukaryotic expression system
- Methyl labeling
- Pichia pastoris
- TROSY
ASJC Scopus subject areas
- Biochemistry
- Spectroscopy