4wjn A 1.5 BS01 peptide B 0 Y21 E33 I34 H35 F36 K37 H43 K46 R54 Y4 E16 I17 H18 F19 K20 H26 K29 R37 ? P63165 25497731 7 ~ 29 EGEYIKLKVIGQDSSEIHFKVKMTTHLKKLKESYAQRQGVPMNSLRFLFEGQRIADNHTPKELGMEEEDVIEVYQEQ