4wht K 2.22 BS01 peptide k 0 Y33 R57 F58 Y59 Y32 R56 F57 Y58 25473061 412 ~ 422 VKLQESGGGLVQPGRSLKLSCAASGFTFSDSYLAWVRQAPTKGLEWVASITNSGGRFYYRDSVKGRFTISRDNAKSTLYLQMDSLRSEDTATYYCTRMDYWGQGTTVTVSSAETTAPSVYPLAPSMVTLGCLVKGYFPEPVTVTWNSGALSSGVHTFPAVLQSGLYTLTSSVTVPSSTWPSQTVTCNVAHPASSTKVDKKIVPR