9b76 | pdb_00009b76

Crystal structure of humanized 44H10 Fab Version 21

spinqualitylabelsall models 9b76, resolution 1.73Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 9b76 is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.73Å Ligands: ACT, K Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed Reducing the immunogenicity of animal-derived monoclonal antibodies (mAbs) for use in humans is critical to maximize therapeutic effectiveness and preclude potential adverse events. While traditional humanization methods have primarily focused on grafting antibody Complementarity-Determining Regions (CDRs) on homologous human antibody scaffolds, framework regions can also play essential roles in antigen binding. Here, we describe the humanization of the pan-HLA-DR mAb 44H10, a murine antibody displaying significant involvement of the framework region in antigen binding. Using a structure-guided approach, we identify and restore framework residues that directly interact with the antigen or indirectly modulate antigen binding by shaping the antibody paratope and engineer a humanized antibody with affinity, biophysical profile, and molecular binding basis comparable to that of the parental 44H10 mAb. As a humanized molecule, this antibody holds promise as a scaffold for the development of MHC class II-targeting therapeutics and vaccines. Humanization of Pan-HLA-DR mAb 44H10 Hinges on Critical Residues in the Antibody Framework.,Kassardjian A, Ivanochko D, Barber B, Jetha A, Julien JP Antibodies (Basel). 2024 Jul 16;13(3):57. doi: 10.3390/antib13030057. PMID:39051333 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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