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IGG1 FAB FRAGMENT (MOPC21) COMPLEX WITH DOMAIN III OF PROTEIN G FROM STREPTOCOCCUS External Resource: Annotation Chains Domain Info Class Fold Superfamily Family Domain Species Provenance Source (Version) C [auth A] d1igca_ Alpha and beta proteins (a+b) beta-Grasp (ubiquitin-like) Immunoglobulin-binding domains Immunoglobulin-binding domains Immunoglobulin-binding protein G, different constituent domains Streptococcus sp. G148 ) [TaxId: 1324 ], SCOPe (2.08) B [auth H] d1igch1 All beta proteins Immunoglobulin-like beta-sandwich Immunoglobulin V set domains (antibody variable domain-like) Immunoglobulin heavy chain variable domain, VH house mouse (Mus musculus ) [TaxId: 10090 ], SCOPe (2.08) B [auth H] d1igch2 All beta proteins Immunoglobulin-like beta-sandwich Immunoglobulin C1 set domains (antibody constant domain-like) Immunoglobulin heavy chain gamma constant domain 1, CH1-gamma house mouse (Mus musculus ) [TaxId: 10090 ], SCOPe (2.08) A [auth L] d1igcl1 All beta proteins Immunoglobulin-like beta-sandwich Immunoglobulin V set domains (antibody variable domain-like) Immunoglobulin light chain kappa variable domain, VL-kappa house mouse (Mus musculus ) [TaxId: 10090 ], SCOPe (2.08) A [auth L] d1igcl2 All beta proteins Immunoglobulin-like beta-sandwich Immunoglobulin C1 set domains (antibody constant domain-like) Immunoglobulin light chain kappa constant domain, CL-kappa house mouse (Mus musculus ) [TaxId: 10090 ], SCOPe (2.08)
Chains Family Name Domain Identifier Architecture Possible Homology Homology Topology Family Provenance Source (Version) C [auth A] HSP90,HATPase_c_3 e1igcA1 A: alpha arrays X: ETN0001 domain-like H: ETN0001 domain-like T: Mss4-like F: HSP90,HATPase_c_3 ECOD (v295.2) B [auth H] Copper-bind e1igcH1 A: alpha arrays X: Phage tail fiber protein trimerization domain H: Phage tail fiber protein trimerization domain T: Phage tail fiber protein trimerization domain F: Copper-bind ECOD (v295.2) A [auth L] Copper-bind e1igcL1 A: alpha arrays X: Phage tail fiber protein trimerization domain H: Phage tail fiber protein trimerization domain T: Phage tail fiber protein trimerization domain F: Copper-bind ECOD (v295.2)
Chain Protein Name Description Organism Name Gene Allele Name(s) Domain Name(s) Receptor Type Receptor Description Provenance Source B [auth H] MOPC 21, VL Y108>N VH-CH1 Mus musculus (house mouse) IGHV5-17*02, IGHJ4*01, IGHG1*01 V-DOMAIN VH, C-DOMAIN CH1 IG FAB-GAMMA-1_KAPPA IMGT (202638-0) A [auth L] MOPC 21, VL Y108>N L-KAPPA Mus musculus (house mouse) IGKV6-20*01, IGKJ1*02, IGKJ2*01, IGKC*01, IGKC*02 V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA IG FAB-GAMMA-1_KAPPA IMGT (202638-0)
Chain Chain Class Chain Subclass Chain Type Antigen Name(s) Provenance Source B [auth H] Heavy Chain IGHV5 - - SAbDab (2026-10-02) A [auth L] Light Chain IGKV6 Kappa - SAbDab (2026-10-02)
Chains Polymer Molecular Function Biological Process Cellular Component C [auth A] STREPTOCOCCAL PROTEIN G (DOMAIN III) - - - B [auth H] IGG1-KAPPA MOPC21 FAB (HEAVY CHAIN) - - - A [auth L] IGG1-KAPPA MOPC21 FAB (LIGHT CHAIN) -