7v4w B 2.1 BS01 peptide C 0 R32 Y33 W34 E51 Y100 Y101 E102 R31 Y32 W33 E50 Y99 Y100 E101 7 ~ 13 EVKLHQSGGGLVQPGGFLKISCVVSGIDFSRYWMSWVRRAPGKGLEWIGEITPDSNTINYVPSLKDNFGISRDNAKNTLFLQMTKVRSEDTALYFCASYYEGFAYWGQGTLVTVSAASTKGPSVFPLAPSTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSSQTYICNVNHKPSNTKVDKKVEPKSC