>7d4b_B mol:protein length:127 anti-4-1BB VHHQVQLVESGGGVVQPGRSLRLSCAASGSTFSIVAMGWYRQAPGKQRELVASIITGDGDTNYADSVKGRFTISRDNSKNTMYLQMNSLKPEDTAVYYCYARTGYGSSWLMGHEYDYWGQGTQVTVSSLG