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

ChainsDomain InfoClassFoldSuperfamilyFamilyDomainSpeciesProvenance Source (Version)
Ad2oqpa1 All alpha proteins 4-helical cytokines 4-helical cytokines Short-chain cytokines Interleukin-21 (IL-21) human (Homo sapiens ) [TaxId: 9606 ], SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2 FamilyShort-chain cytokines 8022893 4000852 SCOP2 (2022-06-29)
ASCOP2 Superfamily4-helical cytokines 8035273 3001717 SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
AIL15e2oqpA1 A: alpha bundlesX: Ferritin/Heme oxygenase/4-helical cytokinesH: 4-helical cytokines (From Topology)T: 4-helical cytokinesF: IL15ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A1.20.1250.70 Mainly Alpha Up-down Bundle Growth Hormone Chain: ACATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF02372Interleukin 15 (IL15)Interleukin 15Interleukin-15 (IL-15) is a cytokine that possesses a variety of biological functions, including stimulation and maintenance of cellular immune responses [1]. Structurally these proteins are short-chain 4-helical cytokines.Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
Interleukin-21

InterPro: Protein Family Classification InterPro Database Homepage