Annotations: 7YXU

Crystal structure of agonistic antibody 1618 fab domain bound to human 4-1BB.

External Resource: Annotation

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: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
C [auth L]	YTH	e7yxuL1	A: beta barrels	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: YTH	ECOD (v294.2)
B [auth H]	YTH	e7yxuH1	A: beta barrels	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: YTH	ECOD (v294.2)
A	YTH	e7yxuA1	A: beta barrels	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: YTH	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C [auth L]	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)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
C [auth L]	Light Chain	IGKV1	Kappa	tumor necrosis factor receptor superfamily member 9	SAbDab (2026-05-08)
B [auth H]	Heavy Chain	IGHV3	-	tumor necrosis factor receptor superfamily member 9	SAbDab (2026-05-08)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
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
C [auth L]	light chain of Fab	-	-	-
B [auth H]	heavy chain of Fab	-	-	-
A	Tumor necrosis factor receptor superfamily member 9	molecular transducer activity signaling receptor activity	cellular process apoptotic process cell death programmed cell death negative regulation of cell population proliferation regulation of biological process cell population proliferation regulation of cellular process regulation of cell population proliferation negative regulation of cellular process biological regulation negative regulation of biological process multicellular organismal process cellular developmental process cellular process apoptotic process cell death programmed cell death negative regulation of cell population proliferation regulation of biological process cell population proliferation regulation of cellular process regulation of cell population proliferation negative regulation of cellular process biological regulation negative regulation of biological process multicellular organismal process cellular developmental process regulation of leukocyte activation immature T cell proliferation in thymus regulation of cell activation cell development mononuclear cell differentiation lymphocyte activation lymphocyte differentiation leukocyte proliferation leukocyte activation T cell differentiation in thymus T cell activation cell differentiation lymphocyte proliferation anatomical structure development regulation of immature T cell proliferation regulation of immune system process regulation of multicellular organismal process T cell differentiation T cell proliferation regulation of lymphocyte proliferation developmental process regulation of leukocyte proliferation hemopoiesis cell activation regulation of T cell activation immature T cell proliferation regulation of immature T cell proliferation in thymus regulation of T cell proliferation mononuclear cell proliferation immune system process regulation of mononuclear cell proliferation regulation of lymphocyte activation leukocyte differentiation	cell periphery cellular anatomical structure plasma membrane membrane cell surface external side of plasma membrane side of membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR009030	Growth factor receptor cysteine-rich domain superfamily	Homologous Superfamily
A	IPR001368	TNFR/NGFR cysteine-rich region	Domain
A	IPR020413	Tumour necrosis factor receptor 9	Family
A	IPR034020	Tumour necrosis factor receptor 9, N-terminal	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	: Q07011	ulcerative colitis malignant colon neoplasm medulloblastoma tuberculosis benign colon neoplasm colorectal cancer gastric cancer hereditary diffuse gastric adenocarcinoma kidney cancer lung cancer Malignant neoplasm of kidney psoriasis cancer Crohn disease gastric neoplasm ulcerative colitis malignant colon neoplasm medulloblastoma tuberculosis benign colon neoplasm colorectal cancer gastric cancer hereditary diffuse gastric adenocarcinoma kidney cancer lung cancer Malignant neoplasm of kidney psoriasis cancer Crohn disease gastric neoplasm inflammatory bowel disease kidney neoplasm lymphatic system disease rheumatoid arthritis colonic neoplasm cutaneous lupus erythematosus hematologic disease interstitial cystitis lung adenocarcinoma

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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.