Annotations: 8AOK

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B		e8aokB1	A: alpha bundles	X: RNase A-like	H: RNase A-like	T: RNase A-like	F:	ECOD (develop294)
A	GFP	e8aokA1	A: alpha bundles	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: GFP	ECOD (develop294)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	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	Heavy Chain	IGHV1	-	programmed cell death 1 ligand 1	SAbDab (2026-03-20)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF07686	Immunoglobulin V-set domain (V-set)	Immunoglobulin V-set domain	This domain is found in antibodies as well as neural protein P0 and CTL4 amongst others.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	VHH 6	-	-	-
A	Programmed cell death 1 ligand 1	molecular function activator activity molecular function regulator activity signaling receptor regulator activity receptor ligand activity signaling receptor activator activity transcription coactivator activity transcription regulator activity transcription coregulator activity protein-macromolecule adaptor activity molecular adaptor activity	regulation of cellular process leukocyte apoptotic process positive regulation of biological process regulation of programmed cell death lymphocyte apoptotic process regulation of activated CD8-positive, alpha-beta T cell apoptotic process activated CD8-positive, alpha-beta T cell apoptotic process regulation of T cell apoptotic process positive regulation of leukocyte apoptotic process positive regulation of cellular process regulation of leukocyte apoptotic process regulation of lymphocyte apoptotic process regulation of biological process positive regulation of programmed cell death regulation of cellular process leukocyte apoptotic process positive regulation of biological process regulation of programmed cell death lymphocyte apoptotic process regulation of activated CD8-positive, alpha-beta T cell apoptotic process activated CD8-positive, alpha-beta T cell apoptotic process regulation of T cell apoptotic process positive regulation of leukocyte apoptotic process positive regulation of cellular process regulation of leukocyte apoptotic process regulation of lymphocyte apoptotic process regulation of biological process positive regulation of programmed cell death positive regulation of lymphocyte apoptotic process regulation of apoptotic process biological regulation cell death positive regulation of apoptotic process positive regulation of T cell apoptotic process positive regulation of activated CD8-positive, alpha-beta T cell apoptotic process cellular process T cell apoptotic process apoptotic process programmed cell death negative regulation of lymphocyte proliferation multicellular organismal process regulation of leukocyte activation negative regulation of biological process regulation of cell activation negative regulation of T cell proliferation negative regulation of cell adhesion negative regulation of leukocyte proliferation T cell activation lymphocyte proliferation regulation of immune system process regulation of leukocyte proliferation cell population proliferation negative regulation of T cell activation negative regulation of leukocyte cell-cell adhesion regulation of cell population proliferation mononuclear cell proliferation negative regulation of cell-cell adhesion regulation of leukocyte cell-cell adhesion negative regulation of multicellular organismal process negative regulation of leukocyte activation regulation of activated T cell proliferation lymphocyte activation negative regulation of lymphocyte activation leukocyte proliferation leukocyte cell-cell adhesion leukocyte activation activated T cell proliferation negative regulation of mononuclear cell proliferation cell adhesion cell-cell adhesion negative regulation of cellular process regulation of multicellular organismal process regulation of cell-cell adhesion T cell proliferation regulation of lymphocyte proliferation negative regulation of cell population proliferation regulation of cell adhesion cell activation regulation of T cell activation negative regulation of cell activation regulation of T cell proliferation negative regulation of activated T cell proliferation negative regulation of immune system process immune system process regulation of mononuclear cell proliferation regulation of lymphocyte activation response to stimulus immune response adaptive immune response cellular response to stimulus biological process involved in interspecies interaction between organisms response to lipid response to other organism cellular response to lipopolysaccharide response to oxygen-containing compound response to external stimulus cellular response to molecule of bacterial origin response to lipopolysaccharide cellular response to oxygen-containing compound response to biotic stimulus cellular response to biotic stimulus cellular response to chemical stimulus response to chemical response to bacterium cellular response to lipid response to external biotic stimulus response to molecule of bacterial origin regulation of defense response positive regulation of response to biotic stimulus regulation of response to biotic stimulus pattern recognition receptor signaling pathway regulation of response to external stimulus toll-like receptor signaling pathway signaling cell communication positive regulation of response to stimulus immune response-activating signaling pathway positive regulation of response to external stimulus immune response-regulating signaling pathway positive regulation of immune response regulation of response to stress response to stress innate immune response signal transduction positive regulation of immune system process innate immune response-activating signaling pathway positive regulation of innate immune response defense response regulation of innate immune response defense response to symbiont TRIF-dependent toll-like receptor signaling pathway regulation of response to stimulus defense response to other organism positive regulation of defense response activation of innate immune response regulation of immune response MyD88-independent toll-like receptor signaling pathway activation of immune response response to peptide response to cytokine negative regulation of interleukin-10 production interleukin-10 production regulation of cytokine production cytokine production regulation of interleukin-10 production negative regulation of macromolecule metabolic process regulation of biosynthetic process negative regulation of metabolic process negative regulation of cytokine production regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of gene expression negative regulation of gene expression biosynthetic process negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process regulation of macromolecule biosynthetic process metabolic process macromolecule metabolic process regulation of metabolic process cell surface receptor signaling pathway immune response-regulating cell surface receptor signaling pathway negative regulation of signaling regulation of signal transduction regulation of antigen receptor-mediated signaling pathway negative regulation of antigen receptor-mediated signaling pathway negative regulation of cell communication regulation of signaling immune response-activating cell surface receptor signaling pathway negative regulation of response to stimulus regulation of T cell receptor signaling pathway T cell receptor signaling pathway negative regulation of signal transduction negative regulation of T cell receptor signaling pathway regulation of cell communication antigen receptor-mediated signaling pathway tumor necrosis factor superfamily cytokine production regulation of tumor necrosis factor superfamily cytokine production negative regulation of tumor necrosis factor superfamily cytokine production positive regulation of macromolecule biosynthetic process positive regulation of metabolic process positive regulation of biosynthetic process positive regulation of macromolecule metabolic process positive regulation of interleukin-10 production positive regulation of gene expression positive regulation of multicellular organismal process positive regulation of cytokine production regulation of type II interferon production type II interferon production negative regulation of type II interferon production adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains lymphocyte mediated immunity regulation of immune effector process T cell mediated immunity negative regulation of response to biotic stimulus immune response to tumor cell negative regulation of immune response to tumor cell negative regulation of response to tumor cell negative regulation of lymphocyte mediated immunity regulation of response to tumor cell T cell mediated immune response to tumor cell negative regulation of T cell mediated immune response to tumor cell regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains regulation of T cell mediated immune response to tumor cell leukocyte mediated immunity regulation of T cell mediated immunity response to tumor cell regulation of adaptive immune response negative regulation of immune response negative regulation of immune effector process regulation of immune response to tumor cell negative regulation of adaptive immune response immune effector process negative regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains regulation of leukocyte mediated immunity regulation of lymphocyte mediated immunity negative regulation of leukocyte mediated immunity negative regulation of T cell mediated immunity positive regulation of leukocyte cell-cell adhesion positive regulation of cell-cell adhesion positive regulation of lymphocyte activation positive regulation of cell activation positive regulation of leukocyte activation positive regulation of T cell activation positive regulation of cell adhesion lymphocyte costimulation T cell costimulation regulation of alpha-beta T cell activation alpha-beta T cell proliferation alpha-beta T cell activation regulation of CD4-positive, alpha-beta T cell proliferation negative regulation of CD4-positive, alpha-beta T cell activation regulation of alpha-beta T cell proliferation CD4-positive, alpha-beta T cell activation CD4-positive, alpha-beta T cell proliferation negative regulation of alpha-beta T cell proliferation regulation of CD4-positive, alpha-beta T cell activation negative regulation of CD4-positive, alpha-beta T cell proliferation negative regulation of alpha-beta T cell activation positive regulation of cell population proliferation positive regulation of lymphocyte proliferation positive regulation of T cell proliferation positive regulation of leukocyte proliferation positive regulation of mononuclear cell proliferation CD8-positive, alpha-beta T cell activation negative regulation of CD8-positive, alpha-beta T cell activation regulation of CD8-positive, alpha-beta T cell activation	cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle extracellular space cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle extracellular space vesicle extracellular membrane-bounded organelle intracellular organelle intracellular anatomical structure cytoskeleton membraneless organelle intracellular membraneless organelle actin cytoskeleton nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen endosome membrane endosome intracellular vesicle recycling endosome endomembrane system cytoplasmic vesicle membrane bounding membrane of organelle recycling endosome membrane vesicle membrane cytoplasmic vesicle cytoplasm organelle membrane early endosome early endosome membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A	IPR013106	Immunoglobulin V-set domain	Domain
A	IPR003599	Immunoglobulin domain subtype	Domain
A	IPR051713	T-cell Activation and Immune Regulation Protein	Family
A	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A	IPR013162	CD80-like, immunoglobulin C2-set	Domain
A	IPR007110	Immunoglobulin-like domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: Q9NZQ7	thymus cancer lymphoma non-small cell lung carcinoma allergic disease hepatocellular carcinoma cancer Neoplasms, Radiation-Induced drug dependence pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia prostate disease head and neck cancer skin disease interstitial cystitis substance abuse atopic eczema thymus cancer lymphoma non-small cell lung carcinoma allergic disease hepatocellular carcinoma cancer Neoplasms, Radiation-Induced drug dependence pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia prostate disease head and neck cancer skin disease interstitial cystitis substance abuse atopic eczema liver disease breast cancer lung disease transitional cell carcinoma congestive heart failure urinary bladder disease cystic fibrosis osteosarcoma polycystic ovary syndrome psoriasis hematologic disease renal cell carcinoma small cell lung carcinoma kidney disease autoimmune disease lung benign neoplasm substance-related disorder breast disease thymus neoplasm chronic obstructive pulmonary disease tuberculosis uterine disease connective tissue disease nasopharyngeal carcinoma diffuse large B-cell lymphoma oligodendroglioma ovarian disease Hashimoto thyroiditis sarcoidosis hypothyroidism stomach disease asthma substance dependence brain disease lung carcinoma lymphatic system disease trabecular adenocarcinoma colonic disease medulloblastoma ulcerative colitis Crohn disease

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.