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Crystal structure of anti-FLAG M2 Fab fragment bound to FLAG-tag peptide epitope External Resource: Annotation Chains Family Name Domain Identifier Architecture Possible Homology Homology Topology Family Provenance Source (Version) C [auth L] Pro_isomerase e8rmoL01 A: alpha arrays X: Hypothetical protein YqbG-like H: Hypothetical protein YqbG-like T: alpha/beta-Hydrolases F: Pro_isomerase ECOD (v295.2) B [auth H] Pro_isomerase e8rmoH01 A: alpha arrays X: Hypothetical protein YqbG-like H: Hypothetical protein YqbG-like T: alpha/beta-Hydrolases F: Pro_isomerase ECOD (v295.2)
Chain Chain Class Chain Subclass Chain Type Antigen Name(s) Provenance Source C [auth L] Light Chain IGKV1 Kappa flag-tag SAbDab (2026-09-18) B [auth H] Heavy Chain IGHV1 - flag-tag SAbDab (2026-09-18)
Protein Modification Annotation Modified Residue(s) Chain Residue(s) Description B [auth H] PCA Parent Component: GLN RESID AA0031 PSI-MOD MOD:00040 , 2-pyrrolidone-5-carboxylic acid (Glu) MOD:00420