期刊
SCIENCE
卷 367, 期 6485, 页码 1444-+出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.abb2762
关键词
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资金
- National Natural Science Foundation of China [31971123, 81920108015, 31930059]
- Key RAMP
- D Program of Zhejiang Province [2020C04001]
- SARS-CoV-2 emergency project of the Science and Technology Department of Zhejiang Province [2020C03129]
Angiotensin-converting enzyme 2 (ACE2) is the cellular receptor for severe acute respiratory syndromecoronavirus (SARS-CoV) and the new coronavirus (SARS-CoV-2) that is causing the serious coronavirus disease 2019 (COVID-19) epidemic. Here, we present cryo-electron microscopy structures of full-length human ACE2 in the presence of the neutral amino acid transporter B0AT1 with or without the receptor binding domain (RBD) of the surface spike glycoprotein (S protein) of SARS-CoV-2, both at an overall resolution of 2.9 angstroms, with a local resolution of 3.5 angstroms at the ACE2-RBD interface. The ACE2-B0AT1 complex is assembled as a dimer of heterodimers, with the collectrin-like domain of ACE2 mediating homodimerization. The RBD is recognized by the extracellular peptidase domain of ACE2 mainly through polar residues. These findings provide important insights into the molecular basis for coronavirus recognition and infection.
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