based on the observed alterations of hbsag antigenicity and the known amino acid sequence of the hbsag polypeptide , a major antigenic determinant was localized within the sequence : pro-ser-cys-cys-cys-thr-lys-pro-thr ( ser ) -asp-gly-asn-cys-thr-cys-ile-pro-ile-pr o-ser-ser , corresponding to residues 135-155 .
C0003320
hbsag
C0003316
antigenic determinant