Direct detection of lysine side chain NH3+ in protein-heparin complexes using NMR spectroscopy.

Direct detection of lysine side chain NH3+ in protein-heparin complexes using NMR spectroscopy.
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使用 NMR 光谱法直接检测蛋白质-肝素复合物中的赖氨酸侧链 NH3。

DOI:
10.1039/c7an01406f
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发表时间:
2018
期刊:
The Analyst
影响因子:
--
通讯作者:
Rajarathnam,Krishna
Rajarathnam,Krishna
中科院分区:
--
文献类型:
--
作者:
Sepuru,KrishnaMohan;Iwahara,Junji;Rajarathnam,Krishna

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两个NMR观测值,HISQC光谱中的N-H3+峰和游离和肝素结合形式之间的N-H3+化学位移差,可以识别蛋白质-肝素复合物中的结合界面赖氨酸。与骨架化学位移不同,这些直接探针是严格的,并且不太容易出现假阳性或假阴性。
Two NMR observables, the NζH3+ peak in the HISQC spectrum and Nζ chemical shift difference between the free and heparin-bound forms, can identify binding-interface lysines in protein–heparin complexes. Unlike backbone chemical shifts, these direct probes are stringent and are less prone to either false positives or false negatives.