PMID: 7520090Sep 1, 1994Paper

Localization of neutralizing epitopes and the receptor-binding site within the amino-terminal 330 amino acids of the murine coronavirus spike protein

Journal of Virology
H KuboF Taguchi

Abstract

To localize the epitopes recognized by monoclonal antibodies (MAbs) specific for the S1 subunit of the murine coronavirus JHMV spike protein, we have expressed S1 proteins with different deletions from the C terminus of S1. S1utt is composed of the entire 769-amino-acid (aa) S1 protein; S1NM, S1N, S1n(330), and S1n(220) are deletion mutants with 594, 453, 330, and 220 aa from the N terminus of the S1 protein. The expressed S1 deletion mutant proteins were examined for reactivities to a panel of MAbs. All MAbs classified in groups A and B, those reactive to most mouse hepatitis virus (MHV) strains and those specific for isolate JHMV, respectively, recognized S1N(330) and the larger S1 deletion mutants but failed to react with S1N(220). MAbs in group C, specific for the larger S protein of JHMV, reacted only with the S1utt protein without any deletion. These results indicated that the domain composed of the N-terminal 330 aa comprised the cluster of conformational epitopes recognized by MAbs in groups A and B. It was also shown that the epitopes of MAbs in group C were not restricted to the region missing in the smaller S protein. These results together with the fact that all MAbs in group B retained high neutralizing activity su...Continue Reading

Citations

Jan 5, 2002·Journal of Virology·Fumihiro Taguchi, Shutoku Matsuyama
Dec 13, 2003·The Journal of Biological Chemistry·Swee Kee WongMichael Farzan
Mar 3, 2004·Journal of Virology·Edward B Thorp, Thomas M Gallagher
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Nov 5, 2002·Journal of Virology·Shutoku Matsuyama, Fumihiro Taguchi
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