Polypeptide Fragment Amino acid Group 1 Group 2 Group 3 Group 1 Group 2 Group 3 Group 1 Group 2 Group 3 Group 1 Group 2 Group 3 Group 1 Group 2 Group 3 Group 1 Group 2 Group 3 Group 1 Group 2 Group 3 Group 1 Group 2 Group 3
B2A1 B2F1 B2D10 B2H10 B2B2 B2D8 B2A3 B2E12
S1 2-256 - - - - - - - -
S2 131-397 + + + - - - -
S3 266-531 + + + + + + + +
S4 266-332 - - - - - - - -
S5 300-365 - - - - - - - -
S6 333-397 + + + - - - - -
S7 399-464 - - - + + + + -
S8 433-498 - - - - - - - -
S9 465-531 - - - - - - - +
S10 366-381 + + + - - - - -
S11 374-389 - - - - - - - -
S12 382-397 - - - - - - - -
S13 398-414 - - - - - - - -
S14 407-423 - - - + + + + -
S15 415-432 - - - + + + + -
S16 498-514 - - - - - - - +
S17 506-522 - - - - - - - -
S18 515-531 - - - - - - - -