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Interaction of severe acute respiratory syndrome-coronavirus and NL63 coronavirus spike proteins with angiotensin converting enzyme-2.

Identifieur interne : 003171 ( Main/Merge ); précédent : 003170; suivant : 003172

Interaction of severe acute respiratory syndrome-coronavirus and NL63 coronavirus spike proteins with angiotensin converting enzyme-2.

Auteurs : Alison C. Mathewson [Royaume-Uni] ; Alexandra Bishop [Royaume-Uni] ; Yongxiu Yao [Royaume-Uni] ; Fred Kemp [Royaume-Uni] ; Junyuan Ren [Royaume-Uni] ; Hongying Chen [Royaume-Uni] ; Xiaodong Xu [Royaume-Uni] ; Ben Berkhout [Pays-Bas] ; Lia Van Der Hoek [Pays-Bas] ; Ian M. Jones [Royaume-Uni]

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RBID : pubmed:18931070

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English descriptors

Abstract

Although in different groups, the coronaviruses severe acute respiratory syndrome-coronavirus (SARS-CoV) and NL63 use the same receptor, angiotensin converting enzyme (ACE)-2, for entry into the host cell. Despite this common receptor, the consequence of entry is very different; severe respiratory distress in the case of SARS-CoV but frequently only a mild respiratory infection for NL63. Using a wholly recombinant system, we have investigated the ability of each virus receptor-binding protein, spike or S protein, to bind to ACE-2 in solution and on the cell surface. In both assays, we find that the NL63 S protein has a weaker interaction with ACE-2 than the SARS-CoV S protein, particularly in solution binding, but the residues required for contact are similar. We also confirm that the ACE-2-binding site of NL63 S lies between residues 190 and 739. A lower-affinity interaction with ACE-2 might partly explain the different pathological consequences of infection by SARS-CoV and NL63.

DOI: 10.1099/vir.0.2008/003962-0
PubMed: 18931070

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pubmed:18931070

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<div type="abstract" xml:lang="en">Although in different groups, the coronaviruses severe acute respiratory syndrome-coronavirus (SARS-CoV) and NL63 use the same receptor, angiotensin converting enzyme (ACE)-2, for entry into the host cell. Despite this common receptor, the consequence of entry is very different; severe respiratory distress in the case of SARS-CoV but frequently only a mild respiratory infection for NL63. Using a wholly recombinant system, we have investigated the ability of each virus receptor-binding protein, spike or S protein, to bind to ACE-2 in solution and on the cell surface. In both assays, we find that the NL63 S protein has a weaker interaction with ACE-2 than the SARS-CoV S protein, particularly in solution binding, but the residues required for contact are similar. We also confirm that the ACE-2-binding site of NL63 S lies between residues 190 and 739. A lower-affinity interaction with ACE-2 might partly explain the different pathological consequences of infection by SARS-CoV and NL63.</div>
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