Allosteric control of ACE2 peptidase domain dynamics.
Allosteric control of ACE2 peptidase domain dynamics.
复制标题
ACE2肽酶结构域动力学的变构控制。
DOI:
10.1039/d2ob00606e
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发表时间:
2022-05-04
影响因子:
3.2
通讯作者:
中科院分区:
文献类型:
--
作者:
The Angiotensin Converting Enzyme 2 (ACE2) assists the regulation of blood pressure and is the main target of the coronaviruses responsible for SARS and COVID19. The catalytic function of ACE2 relies on the opening and closing motion of its peptidase domain (PD). In this study we investigated the possibility to the allosteric control of the ACE2 PD functional dynamics. After confirming that ACE2 PD binding site opening-closing motion is dominant in characterizing its conformational landscape, we observed that few mutations in the viral receptor binding domain fragments were able to impart different effects on the binding site opening of ACE2 PD. This showed that binding to the solvent exposed area of ACE2 PD can effectively alter the conformational profile of the protein, and thus likely its catalytic function. Using a targeted machine learning model and relative entropy-based statistical analysis, we proposed the mechanism for the allosteric perturbation that regulates the ACE2 PD binding site dynamics at atomistic level. The key residues and the source of the allosteric regulation of ACE PD dynamics are also presented.
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