Human factor Xa bound amidine inhibitor conformation by double rotational-echo double resonance nuclear magnetic resonance and molecular dynamics simulations.
Human factor Xa bound amidine inhibitor conformation by double rotational-echo double resonance nuclear magnetic resonance and molecular dynamics simulations.
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通过双旋转回波双共振核磁共振和分子动力学模拟人因子 Xa 结合脒抑制剂构象。
DOI:
10.1021/jm0202324
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发表时间:
2003
期刊:
影响因子:
--
通讯作者:
Schaefer,Jacob
中科院分区:
文献类型:
--
作者:
McDowell,LyndaM;McCarrick,MargaretA;Studelska,DanielR;O'Connor,RobertD;Light,DavidR;Guilford,WilliamJ;Arnaiz,Damian;Adler,Marc;Dallas,JerryL;Poliks,Barbara;Schaefer,Jacob
Double rotational-echo double resonance (double REDOR) NMR was used to investigate the conformation of a13C-,15N-, and19F-labeled inhibitor (Berlex Biosciences compound no. ZK-806299) bound to human factor Xa. Conformationally dependent carbon−fluorine dipolar couplings were measured by13C{19F} REDOR. Natural abundance carbon signals in the full-echo spectra were removed by13C{15N} REDOR. Major and minor binding modes were suggested by the NMR data, but only the former had adequate signal to noise for distance determinations. Molecular dynamics simulations restrained by double-REDOR-determined intramolecular13C−19F distances revealed two models for the dominant binding mode that are consistent with the NMR data. We conclude that ZK-806299 binds similarly to both FXa. Moreover, it appears to bind to FXa in a fashion previously demonstrated for ZK-807834, a more selective FXa inhibitor.
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