>8U31_2|Chain B|Fab light chain|Homo sapiens (9606) AAQLTQSPSSLSASVGDRVTITCQSSQSVYNNNDLAWYQQKPGKPPKLLIYTPSSLTSGVPSRFSGSGSGTDFTLTISSLQPEDFATYYCLGGYDDDSDNAFGGGTKVEIKRTVAAPSVFIFPPSDEQLKSGTASVVCLLNNFYPREAKVQWKVDNALQSGNSQESVTEQDSKDSTYSLSSTLTLSKADYEKHKVYACEVTHQGLSSPVTKSFNRGEC >8U31_3|Chain C|Fab heavy chain|Homo sapiens (9606) EQQLVESGGGVVQPGRSLRLSCAASGFSFSSTYWICWVRQAPGKGLEWIACIYAGSSGNTYYANWAKGRFTISKDSSSTTVFLQMNSLRAEDTAVYFCARAGGAGGGVYTLTRLDLWGQGTLVTVSSASTKGPSVFPLAPSSKSTSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSSLGTQTYICNVNHKPSNTKVDKKVEPKS >8U31_1|Chain A|Programmed cell death protein 1|Homo sapiens (9606) HHHHHHGENLYFQGSLDSPDRPWNPPTFSPALLVVTEGDNATFTCSFSNTSESFVLNWYRMSPSNQTDKLAAFPEDRSQPGQDSRFRVTQLPNGRDFHMSVVRARRNDSGTYLCGAISLAPKAQIKESLRAELRVTEGNS