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2004 DEC 1 - (NewsRx.com & NewsRx.net) -- Scientists have identified immunodominant sites on the spike protein of severe acute respiratory syndrome (SARS) coronavirus.
"The spike (S) protein of severe acute respiratory syndrome (SARS) coronavirus (SARS-CoV) is not only responsible for receptor binding and virus fusion, but also a major antigen among the SARS-CoV proteins that induces protective antibody responses. In this study, we showed that the S protein of SARS-CoV is highly immunogenic during infection and immunizations, and contains five linear immunodominant sites (sites I to V) as determined by Pepscan analysis with a set of synthetic peptides overlapping the entire S protein sequence against the convalescent sera from SARS patients and antisera from small animals immunized with inactivated SARS-CoV," investigators in the United States and China report.
"Site IV located in the middle region of the S protein (residues 528-635) is a major immunodominant epitope," said Yuxian He at the New York Blood Center in the U.S. and collaborators in the U.S. and China. "The synthetic peptide S[subscript]603-634, which overlaps the site IV sequence reacted with all the convalescent sera from 42 SARS patient, but none of the 30 serum samples from ...