Annotations: 8AG1

Crystal structure of a novel OX40 antibody

External Resource: Annotation

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

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
F [auth a]	SCOP2B Superfamily	TNF receptor-like	8042265	3000971	SCOP2B (2022-06-29)
E [auth A]	SCOP2B Superfamily	TNF receptor-like	8042266	3000971	SCOP2B (2022-06-29)
E [auth A]	SCOP2B Superfamily	TNF receptor-like	8042265	3000971	SCOP2B (2022-06-29)
E [auth A]	SCOP2B Superfamily	TNF receptor-like	8042268	3000971	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)
F [auth a]	GFP	e8ag1a1	A: alpha arrays	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: GFP	ECOD (v295)
E [auth A]	Sulfotransfer_4	e8ag1A1	A: alpha arrays	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel	F: Sulfotransfer_4	ECOD (v295)
C [auth h]	GFP	e8ag1h1	A: alpha arrays	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: GFP	ECOD (v295)
B [auth H]	Sulfotransfer_4	e8ag1H1	A: alpha arrays	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel	F: Sulfotransfer_4	ECOD (v295)
D [auth l]	Sulfotransfer_4	e8ag1l1	A: alpha arrays	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel	F: Sulfotransfer_4	ECOD (v295)
A [auth L]	GFP	e8ag1L1	A: alpha arrays	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: GFP	ECOD (v295)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
E [auth A]	2.10.50.10	Mainly Beta	Ribbon	Tumor Necrosis Factor Receptor, subunit A	domain 2	CATH (utative)
C [auth h]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
B [auth H]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
D [auth l]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
A [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
B [auth H], C [auth h]	Heavy Chain	IGHV6	-	tumor necrosis factor receptor superfamily member 4	SAbDab (2026-06-26)
A [auth L], D [auth l]	Light Chain	IGKV3	Kappa	tumor necrosis factor receptor superfamily member 4	SAbDab (2026-06-26)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
E [auth A], F [auth a]	PF00020	TNFR/NGFR cysteine-rich region (TNFR_c6)	TNFR/NGFR cysteine-rich region		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
E [auth A], F [auth a]	Tumor necrosis factor receptor superfamily member 4	protein binding binding virus receptor activity exogenous protein binding molecular transducer activity transmembrane signaling receptor activity signaling receptor activity tumor necrosis factor receptor activity death receptor activity	multicellular organismal process cell population proliferation cell activation lymphocyte activation leukocyte proliferation leukocyte activation mononuclear cell proliferation immune system process T cell activation lymphocyte proliferation cellular process T cell proliferation response to stimulus immune response multicellular organismal process cell population proliferation cell activation lymphocyte activation leukocyte proliferation leukocyte activation mononuclear cell proliferation immune system process T cell activation lymphocyte proliferation cellular process T cell proliferation response to stimulus immune response regulation of immune effector process regulation of cellular process immunoglobulin production positive regulation of biological process positive regulation of macromolecule biosynthetic process positive regulation of metabolic process positive regulation of biosynthetic process positive regulation of immune effector process regulation of immune system process positive regulation of macromolecule metabolic process positive regulation of immune system process positive regulation of cellular process positive regulation of immunoglobulin production regulation of biosynthetic process production of molecular mediator of immune response regulation of biological process biological regulation regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process immune effector process regulation of gene expression biosynthetic process regulation of immunoglobulin production positive regulation of gene expression positive regulation of production of molecular mediator of immune response regulation of macromolecule biosynthetic process metabolic process regulation of production of molecular mediator of immune response macromolecule metabolic process regulation of metabolic process defense response response to stress inflammatory response positive regulation of cell population proliferation positive regulation of B cell proliferation regulation of leukocyte activation regulation of cell activation positive regulation of lymphocyte activation positive regulation of cell activation regulation of B cell proliferation regulation of B cell activation positive regulation of leukocyte activation positive regulation of mononuclear cell proliferation regulation of multicellular organismal process regulation of lymphocyte proliferation regulation of leukocyte proliferation B cell activation positive regulation of lymphocyte proliferation B cell proliferation positive regulation of B cell activation regulation of cell population proliferation positive regulation of leukocyte proliferation regulation of mononuclear cell proliferation positive regulation of multicellular organismal process regulation of lymphocyte activation negative regulation of biological process RNA metabolic process regulation of primary metabolic process negative regulation of RNA biosynthetic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process regulation of RNA metabolic process transcription by RNA polymerase II negative regulation of cellular process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process negative regulation of macromolecule metabolic process regulation of transcription by RNA polymerase II negative regulation of DNA-templated transcription negative regulation of transcription by RNA polymerase II negative regulation of metabolic process primary metabolic process nucleobase-containing compound biosynthetic process nucleic acid metabolic process negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process regulation of DNA-templated transcription negative regulation of RNA metabolic process	cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane
B [auth H], C [auth h]	Novel OX40 antibody heavy chain	-	-	-
A [auth L], D [auth l]	Novel OX40 antibody light chain	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
E [auth A], F [auth a]	IPR020445	Tumour necrosis factor receptor 4	Family
E [auth A], F [auth a]	IPR001368	TNFR/NGFR cysteine-rich region	Domain
E [auth A], F [auth a]	IPR034022	Tumour necrosis factor receptor 4, N-terminal	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
E [auth A], F [auth a]	: P43489	combined immunodeficiency due to OX40 deficiency autoimmune disease inflammatory bowel disease ulcerative colitis cancer interstitial cystitis psoriasis

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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.