Annotations: 7REW

Crystal Structure of IL-13 in complex with MMAb3 Fab

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
SAbDab Antibody Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
F [auth I]	SCOP2B Superfamily	4-helical cytokines	8080319	3001717	SCOP2B (2022-06-29)
E [auth G]	SCOP2B Superfamily	4-helical cytokines	8080319	3001717	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
C [auth A]	APH	e7rewA1	A: a/b three-layered sandwiches	X: RNase A-like	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: APH	ECOD (v294.1)
A [auth H]	APH	e7rewH1	A: a/b three-layered sandwiches	X: RNase A-like	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: APH	ECOD (v294.1)
D [auth B]	APH	e7rewB1	A: a/b three-layered sandwiches	X: RNase A-like	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: APH	ECOD (v294.1)
B [auth L]	APH	e7rewL1	A: a/b three-layered sandwiches	X: RNase A-like	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: APH	ECOD (v294.1)
F [auth I]	APH	e7rewI1	A: a/b three-layered sandwiches	X: RNase A-like	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: APH	ECOD (v294.1)
E [auth G]	APH	e7rewG1	A: a/b three-layered sandwiches	X: RNase A-like	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: APH	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C [auth A]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
A [auth H]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
D [auth B]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
B [auth L]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
A [auth H], C [auth A]	Heavy Chain	IGHV3	-	il13	SAbDab (2026-04-24)
B [auth L], D [auth B]	Light Chain	IGLV3	Lambda	il13	SAbDab (2026-04-24)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth H], C [auth A]	anti-cyno interleukin 13 Fab heavy chain	-	-	-
B [auth L], D [auth B]	anti-cyno interleukin 13 Fab light chain	-	-	-
E [auth G], F [auth I]	IL13	protein binding binding signaling receptor binding cytokine receptor binding molecular function activator activity molecular function regulator activity cytokine activity signaling receptor regulator activity receptor ligand activity signaling receptor activator activity	macrophage activation multicellular organismal process immune system process cell activation cellular process myeloid leukocyte activation leukocyte activation response to stimulus immune response	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
E [auth G], F [auth I]	IPR020470	Interleukin-13	Family
E [auth G], F [auth I]	IPR001325	Interleukin-4/interleukin-13	Family
E [auth G], F [auth I]	IPR009079	Four-helical cytokine-like, core	Homologous Superfamily
E [auth G], F [auth I]	IPR018096	Interleukin-4/interleukin-13, conserved site	Conserved Site

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RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.