2k3u A -1.00 BS01 peptide B 0 R44 Y48 K51 G52 T53 K54 N55 Q58 K61 Y97 F99 S104 K105 S106 S107 Y108 V109 N111 R14 Y18 K21 G22 T23 K24 N25 Q28 K31 Y67 F69 S74 K75 S76 S77 Y78 V79 N81 ? A6QIG7 19251703 7 ~ 28 NSGLPTTLGKLDERLRNYLKKGTKNSAQFEKMVILTENKGYYTVYLNTPLAEDRKNVELLGKMYKTYFFKKGESKSSYVINGPGKTNEYAY