>3s3tB (B:) observed residues (from ATOM records) arytnilvpvdssdaaqaafteavniaqrhqanltalyvvddsayhtpaldpvlsellda eaahakdamrqrqqfvattsapnlkteisygipkhtiedyakqhpeidlivlgatgtnsp hrvavgsttsyvvdhapcnvivir