Human Coronavirus 229E: Receptor Binding Domain and Neutralization by Soluble Receptor at 37°C

Author:

Breslin Jamie J.1,Mørk Irene2,Smith M. K.1,Vogel Lotte K.2,Hemmila Erin M.1,Bonavia Aurelio1,Talbot Pierre J.3,Sjöström Hans2,Norén Ove2,Holmes Kathryn V.1

Affiliation:

1. Department of Microbiology, University of Colorado Health Sciences Center, Denver, Colorado 80262

2. Department of Medical Biochemistry and Genetics, University of Copenhagen, Copenhagen, Denmark

3. INRS-Institut Armand-Frappier, University of Quebec, Laval, Canada

Abstract

ABSTRACT Truncated human coronavirus HCoV-229E spike glycoproteins containing amino acids 407 to 547 bound to purified, soluble virus receptor, human aminopeptidase N (hAPN). Soluble hAPN neutralized the infectivity of HCoV-229E virions at 37°C, but not 4°C. Binding of hAPN may therefore trigger conformational changes in the viral spike protein at 37°C that facilitate virus entry.

Publisher

American Society for Microbiology

Subject

Virology,Insect Science,Immunology,Microbiology

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