Dual nature of human ACE2 glycosylation in binding to SARS-CoV-2 spike.
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TLDR
It is shown that sugars attached to the N90 site of the human receptor interfere with binding to the virus, explaining reports of increased susceptibility to infection if N90 glycosylation is lost, and the N322 glycan binds to a conserved region of the spike protein identified previously as a cryptic epitope for a neutralizing antibody.Abstract:
Binding of the spike protein of SARS-CoV-2 to the human angiotensin-converting enzyme 2 (ACE2) receptor triggers translocation of the virus into cells. Both the ACE2 receptor and the spike protein are heavily glycosylated, including at sites near their binding interface. We built fully glycosylated models of the ACE2 receptor bound to the receptor binding domain (RBD) of the SARS-CoV-2 spike protein. Using atomistic molecular dynamics (MD) simulations, we found that the glycosylation of the human ACE2 receptor contributes substantially to the binding of the virus. Interestingly, the glycans at two glycosylation sites, N90 and N322, have opposite effects on spike protein binding. The glycan at the N90 site partly covers the binding interface of the spike RBD. Therefore, this glycan can interfere with the binding of the spike protein and protect against docking of the virus to the cell. By contrast, the glycan at the N322 site interacts tightly with the RBD of the ACE2-bound spike protein and strengthens the complex. Remarkably, the N322 glycan binds to a conserved region of the spike protein identified previously as a cryptic epitope for a neutralizing antibody. By mapping the glycan binding sites, our MD simulations aid in the targeted development of neutralizing antibodies and SARS-CoV-2 fusion inhibitors.read more
Citations
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References
More filters
Journal ArticleDOI
VMD: Visual molecular dynamics
TL;DR: VMD is a molecular graphics program designed for the display and analysis of molecular assemblies, in particular biopolymers such as proteins and nucleic acids, which can simultaneously display any number of structures using a wide variety of rendering styles and coloring methods.
Journal ArticleDOI
Molecular dynamics with coupling to an external bath.
TL;DR: In this paper, a method is described to realize coupling to an external bath with constant temperature or pressure with adjustable time constants for the coupling, which can be easily extendable to other variables and to gradients, and can be applied also to polyatomic molecules involving internal constraints.
Journal ArticleDOI
Canonical dynamics: Equilibrium phase-space distributions
TL;DR: The dynamical steady-state probability density is found in an extended phase space with variables x, p/sub x/, V, epsilon-dot, and zeta, where the x are reduced distances and the two variables epsilus-dot andZeta act as thermodynamic friction coefficients.
Journal ArticleDOI
A pneumonia outbreak associated with a new coronavirus of probable bat origin
Peng Zhou,Xing-Lou Yang,Xian Guang Wang,Ben Hu,Lei Zhang,Wei Zhang,Hao Rui Si,Yan Zhu,Bei Li,Chao Lin Huang,Hui-Dong Chen,Jing Chen,Yun Luo,Hua Guo,Ren Di Jiang,Meiqin Liu,Ying Chen,Xu Rui Shen,Xi Wang,Xiao Shuang Zheng,Kai Zhao,Quanjiao Chen,Fei Deng,Lin Lin Liu,Bing Yan,Fa Xian Zhan,Yan-Yi Wang,Gengfu Xiao,Zhengli Shi +28 more
TL;DR: Identification and characterization of a new coronavirus (2019-nCoV), which caused an epidemic of acute respiratory syndrome in humans in Wuhan, China, and it is shown that this virus belongs to the species of SARSr-CoV, indicates that the virus is related to a bat coronav virus.
Journal ArticleDOI
SARS-CoV-2 Cell Entry Depends on ACE2 and TMPRSS2 and Is Blocked by a Clinically Proven Protease Inhibitor
Markus Hoffmann,Hannah Kleine-Weber,Simon Schroeder,Nadine Krüger,Tanja Herrler,Sandra Erichsen,Tobias S. Schiergens,Georg Herrler,Nai Huei Wu,Andreas Nitsche,Marcel A. Müller,Christian Drosten,Christian Drosten,Stefan Pöhlmann +13 more
TL;DR: It is demonstrated that SARS-CoV-2 uses the SARS -CoV receptor ACE2 for entry and the serine protease TMPRSS2 for S protein priming, and it is shown that the sera from convalescent SARS patients cross-neutralized Sars-2-S-driven entry.
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