A molecular ruler for measuring quantitative distance distributions.
A molecular ruler for measuring quantitative distance distributions.
复制标题
用于测量定量距离分布的分子标尺。
DOI:
10.1371/journal.pone.0003229
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发表时间:
2008
期刊:
影响因子:
3.7
通讯作者:
Harbury, Pehr A. B.
中科院分区:
文献类型:
--
作者:
Mathew-Fenn, Rebecca S.;Das, Rhiju;Silverman, Joshua A.;Walker, Peter A.;Harbury, Pehr A. B.
We report a novel molecular ruler for measurement of distances and distance distributions with accurate external calibration. Using solution X-ray scattering we determine the scattering interference between two gold nanocrystal probes attached site-specifically to a macromolecule of interest. Fourier transformation of the interference pattern provides a model-independent probability distribution for the distances between the probe centers-of-mass. To test the approach, we measure end-to-end distances for a variety of DNA structures. We demonstrate that measurements with independently prepared samples and using different X-ray sources are highly reproducible, we demonstrate the quantitative accuracy of the first and second moments of the distance distributions, and we demonstrate that the technique recovers complex distribution shapes. Distances measured with the solution scattering-interference ruler match the corresponding crystallographic values, but differ from distances measured previously with alternate ruler techniques. The X-ray scattering interference ruler should be a powerful tool for relating crystal structures to solution structures and for studying molecular fluctuations.
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影响因子:
14.9
作者:
Cai Q;Kusnetzow AK;Hubbell WL;Haworth IS;Gacho GP;Van Eps N;Hideg K;Chambers EJ;Qin PZ
通讯作者:
Qin PZ
影响因子:
6.1
作者:
Konarev, PV;Volkov, VV;Svergun, DI
通讯作者:
Svergun, DI
影响因子:
15
作者:
Ackerson, CJ;Jadzinsky, PD;Kornberg, RD
通讯作者:
Kornberg, RD
DOI:
10.1073/pnas.0508584102
发表时间:
2005-11-29
影响因子:
11.1
作者:
Laurence, TA;Kong, XX;Weiss, S
通讯作者:
Weiss, S
影响因子:
3.4
作者:
MIAKELYE, RC;DONIACH, S;HODGSON, KO
通讯作者:
HODGSON, KO