Nanomolar Pulse Dipolar EPR Spectroscopy in Proteins: Cu(II)-Cu(II) and Nitroxide-Nitroxide Cases.
Nanomolar Pulse Dipolar EPR Spectroscopy in Proteins: Cu(II)-Cu(II) and Nitroxide-Nitroxide Cases.
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DOI:
10.1021/acs.jpcb.1c03666
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发表时间:
2021-05-27
期刊:
影响因子:
--
通讯作者:
Bode BE
中科院分区:
文献类型:
--
作者:
Ackermann K;Wort JL;Bode BE
The study of ever more complex biomolecular assemblies implicated in human health and disease is facilitated by a suite of complementary biophysical methods. Pulse Dipolar electron paramagnetic resonance Spectroscopy (PDS) is a powerful tool that provides highly precise geometric constraints in frozen solution, however the drive towards PDS at physiologically relevant sub-μM concentrations is limited by the currently achievable concentration sensitivity. Recently, PDS using a combination of nitroxide and CuII based spin labels allowed measuring 500 nM concentration of a model protein. Using commercial instrumentation and spin labels we demonstrate CuII-CuII and nitroxide-nitroxide PDS measurements at protein concentrations below previous examples reaching 500 and 100 nM, respectively. These results demonstrate the general feasibility of sub-μM PDS measurements at short to intermediate distances (~1.5 - 3.5 nm), and are of particular relevance for applications where the achievable concentration is limiting.
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影响因子:
3.4
作者:
Ackermann K;Pliotas C;Valera S;Naismith JH;Bode BE
通讯作者:
Bode BE
影响因子:
1
作者:
Hagelueken, Gregor;Ward, Richard;Naismith, James H.;Schiemann, Olav
通讯作者:
Schiemann, Olav
影响因子:
2.2
作者:
Chiang, YW;Borbat, PP;Freed, JH
通讯作者:
Freed, JH
DOI:
10.1021/jz301788n
发表时间:
2013-01-03
期刊:
The journal of physical chemistry letters
影响因子:
--
作者:
Borbat PP;Georgieva ER;Freed JH
通讯作者:
Freed JH
影响因子:
14.9
作者:
Constantinescu-Aruxandei D;Petrovic-Stojanovska B;Schiemann O;Naismith JH;White MF
通讯作者:
White MF