Binding of SARS-CoV-2/SARS-CoV spike protein with human ACE2 receptor

被引：7

作者：

Koirala, Rajendra P. ^{[1
]}

Thapa, Bidhya ^{[2
]}

Khanal, Shyam P. ^{[1
]}

Powrel, Jhulan ^{[1
]}

Adhikari, Rajendra P. ^{[3
]}

Adhikari, Narayan P. ^{[1
]}

机构：

[1] Tribhuvan Univ, Cent Dept Phys, Kathmandu, Nepal

[2] Tribhuvan Univ, Padma Kanya Multiple Campus, Kathmandu, Nepal

[3] Kathmandu Univ, Dept Phys, Dhulikhel, Nepal

来源：

JOURNAL OF PHYSICS COMMUNICATIONS | 2021年 / 5卷 / 03期

关键词：

spike; SARS-COV-2; hACE2; SARS-COV; Umbrella Sampling; Free energy; MOLECULAR-DYNAMICS; DNA INTERACTIONS; SITES; ENTRY; COV;

D O I：

10.1088/2399-6528/abea27

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

SARS-CoV-2 virus is the serious health concern throughout the world. A comprehensive investigation of binding of SARS-CoV-2 active site with host receptor protein hACE2 is important in designing effective drugs. In the present work, the major amino acid binding partners between the virus CTD and host receptor have been studied and are compared with SARS-CoV RBD binding with hACE2. Our investigation show that some unique hydrogen bond pairs which were not reported in previous work. Along with hydrogen bonding, salt-bridges, hydrophobic interactions and contributions of electrostatic and van der Waals contacts play significant role in binding mechanism. The binding affinity of SARS-CoV-2 CTD/hACE2 is greater than SARS-CoV RBD/hACE2. This outcome is also verified from the free energy estimation by using umbrella sampling.

引用

页数：10

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