On the use of residual dipolar couplings in multi-state structure calculation of two-domain proteins.

On the use of residual dipolar couplings in multi-state structure calculation of two-domain proteins.
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DOI:
10.1016/j.mrl.2021.10.003
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发表时间:
2022-05
期刊:
Magnetic resonance letters
影响因子:
--
通讯作者:
Vogeli, Beat
Vogeli, Beat
中科院分区:
其他
文献类型:
--
作者:
Born, Alexandra;Henen, Morkos A.;Nichols, Parker J.;Vogeli, Beat

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残留偶极耦合(RDC)是一种用于生物大分子结构计算的核磁共振(核磁共振)探针。通常,定义整个分子相对于磁场的取向的排列张量要么在单个键向量精化之前确定,要么与这种精化同时确定。对于单域蛋白质,这种方法效果很好,因为所有的键向量都可以在相同的坐标框架内描述,这是由排列张量给出的。然而,对于不能使用通用对齐张量的系统,人们正在寻找新的方法。在这里,我们提出了一种方法,可以应用于两个结构域的蛋白质,使计算每个结构域内的多个状态以及相对于两个结构域的相对位置。
Residual dipolar couplings (RDCs) are powerful nuclear magnetic resonance (NMR) probes for the structure calculation of biomacromolecules. Typically, an alignment tensor that defines the orientation of the entire molecule relative to the magnetic field is determined either before refinement of individual bond vectors or simultaneously with this refinement. For single-domain proteins this approach works well since all bond vectors can be described within the same coordinate frame, which is given by the alignment tensor. However, novel approaches are sought after for systems where no universal alignment tensor can be used. Here, we present an approach that can be applied to two-domain proteins that enables the calculation of multiple states within each domain as well as with respect to the relative positions of the two domains.
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