>|Human immunoglobulin gamma 2 (IgG2) SAP1.3 F(ab')2 - heavy chain C226S QVQLKQSGPGLVQPSQTLSITCTVSGFSLTSYGVHWVRQSPGKGLEWLGVIWSGGITDYNAAFISRLSISKDNSKSQVFFKVNSLQPNDTAIYYCARNGRIGSTMTLYYAMDYWGQGTLVTVSSASTKGPSVFPLAPCSRSTSESTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSNFGTQTYTCNVDHKPSNTKVDKTVERKSCVECPPCPAPPVAGPSV