We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
A Method for Dynamic Nuclear Polarization Enhancement of Membrane Proteins.
- Authors
Smith, Adam N.; Caporini, Marc A.; Fanucci, Gail E.; Long, Joanna R.
- Abstract
Dynamic nuclear polarization (DNP) magic-angle spinning (MAS) solid-state NMR (ssNMR) spectroscopy has the potential to enhance NMR signals by orders of magnitude and to enable NMR characterization of proteins which are inherently dilute, such as membrane proteins. In this work spinlabeled lipid molecules (SL-lipids), when used as polarizing agents, lead to large and relatively homogeneous DNP enhancements throughout the lipid bilayer and to an embedded lung surfactant mimetic peptide, KL4. Specifically, DNP MAS ssNMR experiments at 600 MHz/395 GHz on KL4 reconstituted in liposomes containing SL-lipids reveal DNP enhancement values over two times larger for KL4 compared to liposome suspensions containing the biradical TOTAPOL. These findings suggest an alternative sample preparation strategy for DNP MAS ssNMR studies of lipid membranes and integral membrane proteins.
- Subjects
MEMBRANE proteins; POLARIZATION (Nuclear physics); NUCLEAR magnetic resonance spectroscopy; LIPOSOMES; BILAYER lipid membranes; SURFACE active agents; MAGIC angle spinning
- Publication
Angewandte Chemie, 2015, Vol 127, Issue 5, p1562
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201410249