An Adaptable Phospholipid Membrane Mimetic System for Solution NMR Studies of Membrane Proteins.
An Adaptable Phospholipid Membrane Mimetic System for Solution NMR Studies of Membrane Proteins.
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DOI:
10.1021/jacs.7b06730
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发表时间:
2017-10-25
影响因子:
15
通讯作者:
Nietlispach D
中科院分区:
文献类型:
--
作者:
Chien CH;Helfinger LR;Bostock MJ;Solt A;Tan YL;Nietlispach D
Based on the saposin-A (SapA) scaffold protein, we demonstrate the suitability of a size-adaptable phospholipid membrane-mimetic system for solution NMR studies of membrane proteins (MPs) under close-to-native conditions. The Salipro nanoparticle size can be tuned over a wide pH range by adjusting the saposin-to-lipid stoichiometry, enabling maintenance of sufficiently high amounts of phospholipid in the Salipro nanoparticle to mimic a realistic membrane environment while controlling the overall size to enable solution NMR for a range of MPs. Three representative MPs, including one G-protein-coupled receptor, were successfully incorporated into SapA-dimyristoylphosphatidylcholine nanoparticles and studied by solution NMR spectroscopy.
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