Annotations: 8C7M

Interleukin 12 receptor subunit beta-1 Fn domains in complex with antagonistic FAb fragment.

External Resource: Annotation

Domain Annotation: ECOD Classification
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
F [auth L]	Aminotran_1_2	e8c7mL1	A: alpha arrays	X: Hypothetical protein YqbG-like	H: Hypothetical protein YqbG-like	T: alpha/beta-Hydrolases	F: Aminotran_1_2	ECOD (v295.2)
D	TSP_1	e8c7mD01	A: alpha arrays	X: Rossmann-like	H: Rossmann-related	T: FAD/NAD(P)-binding domain	F: TSP_1	ECOD (v295.2)
E [auth H]	Aminotran_1_2	e8c7mH1	A: alpha arrays	X: Hypothetical protein YqbG-like	H: Hypothetical protein YqbG-like	T: alpha/beta-Hydrolases	F: Aminotran_1_2	ECOD (v295.2)
C	TSP_1	e8c7mC01	A: alpha arrays	X: Rossmann-like	H: Rossmann-related	T: FAD/NAD(P)-binding domain	F: TSP_1	ECOD (v295.2)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
D, F [auth L]	Light Chain	IGKV1	Kappa	interleukin-12 receptor subunit beta-1	SAbDab (2026-08-21)
C, E [auth H]	Heavy Chain	IGHV3	-	interleukin-12 receptor subunit beta-1	SAbDab (2026-08-21)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00041	Fibronectin type III domain (fn3)	Fibronectin type III domain		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
D, F [auth L]	FAb4 Crystal Kappa Light chain	-	-	-
C, E [auth H]	FAb4 Heavy chain	-	-	-
A, B	Interleukin-12 receptor subunit beta-1	molecular transducer activity coreceptor activity signaling receptor activity transmembrane signaling receptor activity cytokine receptor activity immune receptor activity protein binding binding cytokine binding interleukin-12 receptor activity	cellular response to stimulus regulation of biological process regulation of cellular process cell surface receptor signaling pathway response to stimulus signaling biological regulation response to cytokine cytokine-mediated signaling pathway cell communication response to peptide response to chemical cellular process cellular response to cytokine stimulus cellular response to stimulus regulation of biological process regulation of cellular process cell surface receptor signaling pathway response to stimulus signaling biological regulation response to cytokine cytokine-mediated signaling pathway cell communication response to peptide response to chemical cellular process cellular response to cytokine stimulus signal transduction interleukin-23-mediated signaling pathway adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains positive regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains regulation of T-helper 17 type immune response immune response regulation of adaptive immune response positive regulation of biological process positive regulation of T-helper 17 type immune response adaptive immune response positive regulation of response to stimulus regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains regulation of response to stimulus positive regulation of immune response immune system process regulation of immune response regulation of immune system process positive regulation of adaptive immune response positive regulation of immune system process T-helper 17 type immune response cellular response to interleukin-12 response to interleukin-12 interleukin-12-mediated signaling pathway positive regulation of T-helper 1 type immune response T-helper 1 type immune response regulation of T-helper 1 type immune response cell population proliferation positive regulation of cell population proliferation regulation of cell population proliferation positive regulation of cellular process multicellular organismal process regulation of leukocyte activation regulation of cell activation positive regulation of cell activation T cell activation lymphocyte proliferation positive regulation of leukocyte activation regulation of leukocyte proliferation positive regulation of T cell activation positive regulation of lymphocyte proliferation positive regulation of T cell proliferation positive regulation of activated T cell proliferation mononuclear cell proliferation regulation of leukocyte cell-cell adhesion positive regulation of leukocyte proliferation positive regulation of multicellular organismal process regulation of activated T cell proliferation positive regulation of leukocyte cell-cell adhesion lymphocyte activation leukocyte proliferation leukocyte cell-cell adhesion leukocyte activation activated T cell proliferation positive regulation of cell-cell adhesion positive regulation of lymphocyte activation cell adhesion cell-cell adhesion positive regulation of mononuclear cell proliferation regulation of multicellular organismal process regulation of cell-cell adhesion T cell proliferation regulation of lymphocyte proliferation positive regulation of cell adhesion regulation of cell adhesion cell activation regulation of T cell activation regulation of T cell proliferation regulation of mononuclear cell proliferation regulation of lymphocyte activation regulation of alpha-beta T cell activation positive regulation of T cell differentiation regulation of cell development multicellular organism development cell differentiation regulation of T-helper cell differentiation alpha-beta T cell activation positive regulation of CD4-positive, alpha-beta T cell differentiation T-helper cell differentiation alpha-beta T cell lineage commitment positive regulation of cell development immune effector process T-helper 17 cell differentiation cell fate commitment CD4-positive or CD8-positive, alpha-beta T cell lineage commitment positive regulation of alpha-beta T cell differentiation regulation of developmental process cell development CD4-positive, alpha-beta T cell differentiation positive regulation of T-helper 17 cell differentiation positive regulation of T-helper cell differentiation regulation of T cell differentiation alpha-beta T cell differentiation T cell activation involved in immune response positive regulation of cell differentiation leukocyte activation involved in immune response positive regulation of immune effector process regulation of T-helper 17 cell differentiation hemopoiesis regulation of CD4-positive, alpha-beta T cell activation regulation of immune effector process regulation of leukocyte differentiation mononuclear cell differentiation regulation of cell differentiation lymphocyte differentiation cell activation involved in immune response positive regulation of developmental process positive regulation of T-helper 17 cell lineage commitment anatomical structure development T cell differentiation CD4-positive, alpha-beta T cell lineage commitment developmental process T-helper cell lineage commitment T-helper 17 cell lineage commitment positive regulation of alpha-beta T cell activation leukocyte differentiation cellular developmental process regulation of CD4-positive, alpha-beta T cell differentiation regulation of alpha-beta T cell differentiation positive regulation of CD4-positive, alpha-beta T cell activation alpha-beta T cell activation involved in immune response positive regulation of hemopoiesis CD4-positive, alpha-beta T cell activation lymphocyte activation involved in immune response positive regulation of cell fate commitment regulation of lymphocyte differentiation regulation of multicellular organismal development regulation of T-helper 17 cell lineage commitment regulation of cell fate commitment T cell differentiation involved in immune response T cell lineage commitment positive T cell selection regulation of hemopoiesis positive regulation of leukocyte differentiation T cell selection positive regulation of lymphocyte differentiation biological process involved in interspecies interaction between organisms response to other organism defense response response to type II interferon defense response to symbiont response to external stimulus cellular response to type II interferon response to biotic stimulus defense response to other organism response to stress innate immune response response to external biotic stimulus regulation of defense response regulation of response to biotic stimulus regulation of response to external stimulus regulation of defense response to virus defense response to virus regulation of response to stress positive regulation of defense response to virus by host regulation of defense response to virus by host response to virus lymphocyte mediated immunity T cell mediated immunity positive regulation of leukocyte mediated immunity positive regulation of lymphocyte mediated immunity positive regulation of leukocyte mediated cytotoxicity leukocyte mediated immunity regulation of T cell mediated immunity T cell mediated cytotoxicity positive regulation of T cell mediated cytotoxicity regulation of leukocyte mediated cytotoxicity leukocyte mediated cytotoxicity regulation of leukocyte mediated immunity regulation of T cell mediated cytotoxicity regulation of lymphocyte mediated immunity positive regulation of T cell mediated immunity regulation of cell killing positive regulation of cell killing cell killing immunological memory formation process positive regulation of memory T cell differentiation memory T cell differentiation regulation of memory T cell differentiation immunological memory process regulation of type II interferon production type II interferon production positive regulation of macromolecule biosynthetic process positive regulation of metabolic process positive regulation of biosynthetic process cytokine production regulation of cytokine production positive regulation of macromolecule metabolic process regulation of biosynthetic process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process positive regulation of type II interferon production regulation of gene expression biosynthetic process positive regulation of gene expression metabolic process regulation of macromolecule biosynthetic process macromolecule metabolic process positive regulation of cytokine production regulation of metabolic process	cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane protein-containing complex signaling receptor complex plasma membrane protein complex plasma membrane signaling receptor complex membrane protein complex interleukin-12 receptor complex interleukin-23 receptor complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR003529	Long hematopoietin receptor, Gp130 family 2, conserved site	Conserved Site
A, B	IPR003961	Fibronectin type III	Domain
A, B	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A, B	IPR036116	Fibronectin type III superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	: P42701	mendelian susceptibility to mycobacterial diseases due to complete IL12RB1 deficiency primary biliary cholangitis brain ischemia Hidradenitis suppurativa, familial non-small cell lung carcinoma psoriasis ulcerative colitis interstitial cystitis osteosarcoma systemic sclerosis Crohn disease tuberculosis

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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.