Crystal structure of the Fab fragment of the anti-IL-6 antibody I9H in complex with a domain-swapped IL-6 dimer


Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
C [auth A]SCOP2B Superfamily4-helical cytokines 8037068 3001717 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
C [auth A]WD40e8ywqA1 A: beta barrelsX: cradle loop barrelH: RIFT-relatedT: acid proteaseF: WD40ECOD (v294.2)
B [auth L]WD40e8ywqL1 A: beta barrelsX: cradle loop barrelH: RIFT-relatedT: acid proteaseF: WD40ECOD (v294.2)
A [auth H]WD40e8ywqH1 A: beta barrelsX: cradle loop barrelH: RIFT-relatedT: acid proteaseF: WD40ECOD (v294.2)

SAbDab Antibody Annotation SAbDab Database Homepage

ChainChain ClassChain SubclassChain TypeAntigen Name(s) Provenance Source
B [auth L]Light ChainIGKV1 Kappainterleukin-6SAbDab (2026-06-05)
A [auth H]Heavy ChainIGHV2 -interleukin-6SAbDab (2026-06-05)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
C [auth A]Interleukin-6
B [auth L]Light chain of the Fab fragment of anti-IL-6 antibody I9H---
A [auth H]Heavy chain of the Fab fragment of anti-IL-6 antibody I9H---

Pharos: Disease Associations Pharos Homepage Annotation

ChainsDrug Target  Associated Disease
C [auth A]P05231