The solution structure of motilin from NMR distance constraints, distance geometry, molecular dynamics, and an iterative full relaxation matrix refinement.
The solution structure of motilin from NMR distance constraints, distance geometry, molecular dynamics, and an iterative full relaxation matrix refinement.
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根据 NMR 距离约束、距离几何、分子动力学和迭代全弛豫矩阵细化得出胃动素的溶液结构。
DOI:
10.1021/bi00111a012
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发表时间:
1991
期刊:
影响因子:
2.9
通讯作者:
Gräslund,A
中科院分区:
文献类型:
--
作者:
Edmondson,S;Khan,N;Shriver,J;Zdunek,J;Gräslund,A
Materials and MethodsTwo-dimensional NOESY spectra of motilin were collected on a Varían VXR-500 instrument, and representative spectra and sequential assignments have been presented elsewhere (Khan et al., 1990). The data were collected at 21 C in 30% hexafluoro-2-propanol (HFP) to stabilize secondary structure (Khan et al., 1990). Due to limited quantities of peptide and the appearance of additional NMR resonances in the spectra after a few days exposure of motilin to HFP, only a single NOE experiment was available for this analysis (ie, NOE buildup rates have not been determined). The small size of the peptide (2700 Da) and the relatively large line widths observed in HFP (see below) required the use of a 450-ms mixing time to obtain correlation peak intensities of sufficient magnitude to integrate reliably. The error introduced by using a single NOESY spectrum with a long mixing time to obtain initial distance constraints has been estimated to be about 0.5 Á from simulations using a full relaxation matrix analysis of various possible spin configurationswith distances appropriate for random coil and helical secondary structure (Khan et al.,
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影响因子:
2.9
作者:
Wright,PE;Dyson,HJ;Lerner,RA
通讯作者:
Lerner,RA
影响因子:
3.3
作者:
T. Segawa;M. Nakano;Y. Kai;H. Kawatani;H. Yajima
通讯作者:
H. Yajima
影响因子:
29.4
作者:
P. Poitras;R. Lahaie;S. St.;L. Trudel
通讯作者:
L. Trudel
影响因子:
1.7
作者:
K. Ueda;K. Kitagawa;T. Akita;S. Honma;T. Segawa
通讯作者:
T. Segawa
DOI:
10.1139/o74-002
发表时间:
1974
期刊:
Canadian journal of biochemistry
影响因子:
--
作者:
H. Schubert;J. Brown
通讯作者:
J. Brown