Nanomole-scale protein solid-state NMR by breaking intrinsic 1HT1 boundaries.
Nanomole-scale protein solid-state NMR by breaking intrinsic 1HT1 boundaries.
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DOI:
10.1038/nmeth.1300
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发表时间:
2009-03
期刊:
影响因子:
48
通讯作者:
Ishii Y
中科院分区:
文献类型:
--
作者:
Wickramasinghe NP;Parthasarathy S;Jones CR;Bhardwaj C;Long F;Kotecha M;Mehboob S;Fung LW;Past J;Samoson A;Ishii Y
We present an approach that speeds up protein solid-state NMR (SSNMR) by 5–20 fold by using paramagnetic doping to condense data-collection time (to ~0.2 s/scan), overcoming a long-standing limitation on slow recycling due to intrinsic 1H T1 longitudinal spin relaxation. By employing low-power schemes under magic-angle spinning at 40 kHz, we show that two-dimensional 13C/13C and 13C/15N SSNMR spectra can be attained for several to tens of nano-moles of β-amyloid fibrils and ubiquitin in just 1–2 days.
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