3iet B 2.2 BS01 peptide X 0 W33 R52 N52A N53 W33 R52 N53 N56 20479270 1 ~ 9 QVQLQQSGGGLVQPGGSMKIFCAASGFTFSDAWMDWVRQSPEKGLEWVAEIRNKANNHETYYAESVKGRFTITRDDSKSRMSLQMNSLRAEDTGIYYCSGGKVRNAYWGQGTTVTVSSKTTTAPSVYPLAPVSVTLGCLVKGYFPEPVTLTWNSGSLSSGVHTFPAVLQSDLYTLSSSVTVTSSTWPSQSITCNVAHPASSTKVDKKIEP