7C95
Crystal structure of the anti-human podoplanin antibody Fab fragment
Summary for 7C95
Entry DOI | 10.2210/pdb7c95/pdb |
Descriptor | Light chain of Fab fragment, Heavy chain of Fab fragment, GLYCEROL, ... (6 entities in total) |
Functional Keywords | human podoplanin, monoclonal antibody, glycopeptide, immune system |
Biological source | Mus musculus More |
Total number of polymer chains | 4 |
Total formula weight | 98563.48 |
Authors | Nakamura, S.,Suzuki, K.,Ogasawara, S.,Naruchi, K.,Shimabukuro, J.,Tukahara, N.,Kaneko, M.K.,Kato, Y.,Murata, T. (deposition date: 2020-06-04, release date: 2020-09-30, Last modification date: 2024-10-16) |
Primary citation | Ogasawara, S.,Suzuki, K.,Naruchi, K.,Nakamura, S.,Shimabukuro, J.,Tsukahara, N.,Kaneko, M.K.,Kato, Y.,Murata, T. Crystal structure of an anti-podoplanin antibody bound to a disialylated O-linked glycopeptide. Biochem.Biophys.Res.Commun., 533:57-63, 2020 Cited by PubMed Abstract: Podoplanin (PDPN) is a highly O-glycosylated glycoprotein that is utilized as a specific lymphatic endothelial marker under pathophysiological conditions. We previously developed an anti-human PDPN (hPDPN) monoclonal antibody (mAb), clone LpMab-3, which recognizes the epitope, including both the peptides and the attached disialy-core-l (NeuAcα2-3Galβl-3 [NeuAcα2-6]GalNAcαl-O-Thr) structure at the Thr76 residue in hPDPN. However, it is unclear if the mAb binds directly to both the peptides and glycans. In this study, we synthesized the binding epitope region of LpMab-3 that includes the peptide (-LVATSVNSV-T-GIRIEDLP-) possessing a disialyl-core-1 O-glycan at Thr76, and we determined the crystal structure of the LpMab-3 Fab fragment that was bound to the synthesized glycopeptide at a 2.8 Å resolution. The six amino acid residues and two sialic acid residues are directly associated with four complementarity-determining regions (CDRs; H1, H2, H3, and L3) and four CDRs (H2, H3, L1, and L3), respectively. These results suggest that IgG is advantageous for generating binders against spacious epitopes such as glycoconjugates. PubMed: 32921414DOI: 10.1016/j.bbrc.2020.08.103 PDB entries with the same primary citation |
Experimental method | X-RAY DIFFRACTION (2.13 Å) |
Structure validation
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