4yhi A 1.9 BS01 4CC A 1 D31 Y33 H35 E50 R54 Y103 D104 Y105 F106 D31 Y33 H35 E50 R54 Y103 D104 Y105 F106 ic50=4.6nM 26047352 301 QVQLVQSGAEVKKPGASVKVSCKASGYTFTDYYMHWVRQAPGQGLEWMGETNPRNGGTTYNEKFKGKATMTRDTSTSTAYMELSSLRSEDTAVYYCTIGTSGYDYFDYWGQGTLVTVSSASTKGPSVFPLAPSSKSTSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSSLGTQTYICNVNHKPSNTKVDKKVEPKSC 4yhi B 1.9 BS01 4CC A 1 E39 A96 Y101 E39 A96 Y101 26047352 301 DIVMTQTPLSLSVTPGQPASISCRSSQSIVHSDGNIYLEWYLQKPGQSPKLLIYKVSYRFSGVPDRFSGSGSGTDFTLKISRVEAEDVGVYYCFQASHVPYTFGQGTKLEIKRTVAAPSVFIFPPSDEQLKSGTASVVCLLNNFYPREAKVQWKVDNALQSGNSQESVTEQDSKDSTYSLSSTLTLSKADYEKHKVYACEVTHQGLSSPVTKSFNRGEC