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 5I76 | pdb_00005i76

Crystal structure of FM318, a recombinant Fab adopted from cetuximab

External Resource: Annotation


Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

ChainsDomain InfoClassFoldSuperfamilyFamilyDomainSpeciesProvenance Source (Version)
Dd5i76d_ All beta proteins Immunoglobulin-like beta-sandwich Immunoglobulin automated matches automated matches (Homo sapiens/Mus musculus xenograft ) [TaxId: 1383439 ], SCOPe (2.08)
Bd5i76b_ All beta proteins Immunoglobulin-like beta-sandwich Immunoglobulin automated matches automated matches (Homo sapiens/Mus musculus xenograft ) [TaxId: 1383439 ], SCOPe (2.08)
Cd5i76c2 All beta proteins Immunoglobulin-like beta-sandwich Immunoglobulin C1 set domains (antibody constant domain-like) automated matches (Homo sapiens/Mus musculus xenograft ) [TaxId: 1383439 ], SCOPe (2.08)
Cd5i76c1 All beta proteins Immunoglobulin-like beta-sandwich Immunoglobulin automated matches automated matches (Homo sapiens/Mus musculus xenograft ) [TaxId: 1383439 ], SCOPe (2.08)
Ad5i76a2 All beta proteins Immunoglobulin-like beta-sandwich Immunoglobulin C1 set domains (antibody constant domain-like) automated matches (Homo sapiens/Mus musculus xenograft ) [TaxId: 1383439 ], SCOPe (2.08)
Ad5i76a1 All beta proteins Immunoglobulin-like beta-sandwich Immunoglobulin automated matches automated matches (Homo sapiens/Mus musculus xenograft ) [TaxId: 1383439 ], SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
DLectin_Ce5i76D1 A: alpha arraysX: Long alpha-hairpinH: Ribosomal protein L29 (L29p)T: Ribosomal protein L29 (L29p)F: Lectin_CECOD (v295.2)
BLectin_Ce5i76B1 A: alpha arraysX: Long alpha-hairpinH: Ribosomal protein L29 (L29p)T: Ribosomal protein L29 (L29p)F: Lectin_CECOD (v295.2)
CLectin_Ce5i76C1 A: alpha arraysX: Long alpha-hairpinH: Ribosomal protein L29 (L29p)T: Ribosomal protein L29 (L29p)F: Lectin_CECOD (v295.2)
ALectin_Ce5i76A1 A: alpha arraysX: Long alpha-hairpinH: Ribosomal protein L29 (L29p)T: Ribosomal protein L29 (L29p)F: Lectin_CECOD (v295.2)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
D2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like ImmunoglobulinsCATH (4.3.0)
B2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like ImmunoglobulinsCATH (4.3.0)
C2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like ImmunoglobulinsCATH (4.3.0)
A2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like ImmunoglobulinsCATH (4.3.0)

IMGT Antibody Annotation IMGT Database Homepage

ChainProtein NameDescriptionOrganism NameGene Allele Name(s)Domain Name(s)Receptor TypeReceptor DescriptionProvenance Source
B, D
Fab FM318 VH-CH1 Chimeric (chimeric) IGHV2-2*03, IGHJ3*01, IGHG1*03 V-DOMAIN VH, C-DOMAIN CH1 IG FAB-GAMMA-1_KAPPA IMGT (202636-0)
A, C
Fab FM318 L-KAPPA Chimeric (chimeric) IGKV5-48*01, IGKJ5*01, IGKC*01 V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA IG FAB-GAMMA-1_KAPPA IMGT (202636-0)

SAbDab Antibody Annotation SAbDab Database Homepage

ChainChain ClassChain SubclassChain TypeAntigen Name(s) Provenance Source
B, D
Heavy ChainIGHV2 --SAbDab (2026-09-18)
A, C
Light ChainIGKV5 Kappa-SAbDab (2026-09-18)

Thera-SAbDab Antibody Annotation Thera-SAbDab Database Homepage

ChainNameTargetProvenance Source
B, D
 Izalontamab EGFR/ERBB1/HER1, ERBB3/HER3Therapeutic SAbDab (2026-09-18)
A, C
 Cetuximab EGFR/ERBB1/HER1, ERBB3/HER3Therapeutic SAbDab (2026-09-18)