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Cryo-EM structure of synthetic claudin-4 complex with Clostridium perfringens enterotoxin C-terminal domain, sFab COP-2, and Nanobody External Resource: Annotation Chains Family Name Domain Identifier Architecture Possible Homology Homology Topology Family Provenance Source (Version) A MIT e9beiA01 A: alpha arrays X: Hypothetical protein YqbG-like H: Hypothetical protein YqbG-like T: alpha/beta-Hydrolases F: MIT ECOD (v295.2) C [auth H] Reovirus_L2_GTase e9beiH1 A: alpha arrays X: Hypothetical protein YqbG-like H: Hypothetical protein YqbG-like T: alpha/beta-Hydrolases F: Reovirus_L2_GTase ECOD (v295.2) D [auth K] Reovirus_L2_GTase e9beiK1 A: alpha arrays X: Hypothetical protein YqbG-like H: Hypothetical protein YqbG-like T: alpha/beta-Hydrolases F: Reovirus_L2_GTase ECOD (v295.2) E [auth L] Reovirus_L2_GTase e9beiL1 A: alpha arrays X: Hypothetical protein YqbG-like H: Hypothetical protein YqbG-like T: alpha/beta-Hydrolases F: Reovirus_L2_GTase ECOD (v295.2) B MIT e9beiB01 A: alpha arrays X: Hypothetical protein YqbG-like H: Hypothetical protein YqbG-like T: alpha/beta-Hydrolases F: MIT ECOD (v295.2)
Chain Chain Class Chain Subclass Chain Type Antigen Name(s) Provenance Source C [auth H] Heavy Chain IGHV3 - heat-labile enterotoxin b chain SAbDab (2026-09-25) D [auth K] Heavy Chain IGHV1 - - SAbDab (2026-09-25) E [auth L] Light Chain IGKV1 Kappa heat-labile enterotoxin b chain SAbDab (2026-09-25)
Chains Polymer Molecular Function Biological Process Cellular Component Claudin-4 - - - C [auth H] COP-2 Fab Heavy chain - - - D [auth K] Anti-fab nanobody - - - E [auth L] COP-2 Fab Light chain - - - Heat-labile enterotoxin B chain - -