Ribbon diagram of epitopes recognized by anti-Pg-RIBS mAbs. (A) Pg kringles 1-3 (PDB ID 1KIO, gray) showing mAb 51 binding residues Y₁₅₄-K₁₇₇ (red ribbon and bold characters). (B) Pg kringle 5 (PDB ID 5HPG, gray) showing mAb 109 binding residues H₄₉₄-R₅₀₄ (red ribbon and bold characters). (C) Pg protease domain (PBD ID 1L4D, gray) showing mAb 109 binding residues L₆₅₂-K₆₆₁ (red ribbon and bold characters). (D) Pg protease domain (PBD ID 1L4D, gray) showing mAb 116 binding residues V₆₁₆-R₆₃₇ (red ribbon and bold characters).