Annotations: 1DR9

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1dr9a1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	CD80, N-terminal domain	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d1dr9a2	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C2 set domains	CD80, second domain	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	V set domains-like	8054502	4007530	SCOP2 (2022-06-29)
A	SCOP2 Family	C2 set domains	8054748	4007529	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Immunoglobulin (Ig) domain-like	8054503	3000071	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Immunoglobulin (Ig) domain-like	8054749	3000071	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	V-set_9	e1dr9A1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_9	ECOD (1.6)
A	C2-set_2	e1dr9A2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: C2-set_2	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)

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
A	PF08205	CD80-like C2-set immunoglobulin domain (C2-set_2)	CD80-like C2-set immunoglobulin domain	These domains belong to the immunoglobulin superfamily.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	T LYMPHOCYTE ACTIVATION ANTIGEN	protein binding binding virus receptor activity exogenous protein binding molecular transducer activity coreceptor activity signaling receptor activity molecular function activator activity signaling receptor binding molecular function regulator activity signaling receptor regulator activity receptor ligand activity signaling receptor activator activity	response to stimulus immune response immune system process 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 response to stimulus immune response immune system process 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 cellular process response to external biotic stimulus response to molecule of bacterial origin adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains regulation of alpha-beta T cell activation regulation of leukocyte activation regulation of cell activation positive regulation of T cell differentiation alpha-beta T cell differentiation involved in immune response regulation of cell development multicellular organism development positive regulation of immune response T cell activation cell differentiation regulation of T-helper cell differentiation alpha-beta T cell activation regulation of immune system process positive regulation of CD4-positive, alpha-beta T cell differentiation T-helper cell differentiation positive regulation of cell development T-helper 1 type immune response regulation of T-helper 1 type immune response immune effector process regulation of response to stimulus regulation of leukocyte cell-cell adhesion regulation of T-helper 1 cell differentiation positive regulation of alpha-beta T cell differentiation regulation of developmental process cell development positive regulation of leukocyte cell-cell adhesion CD4-positive, alpha-beta T cell differentiation positive regulation of T-helper cell differentiation positive regulation of cell-cell adhesion regulation of T cell differentiation positive regulation of lymphocyte activation 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 cell-cell adhesion positive regulation of cellular process hemopoiesis regulation of cell adhesion cell activation regulation of CD4-positive, alpha-beta T cell activation regulation of lymphocyte activation multicellular organismal process regulation of immune effector process regulation of leukocyte differentiation regulation of cellular process mononuclear cell differentiation regulation of cell differentiation lymphocyte differentiation cell activation involved in immune response CD4-positive, alpha-beta T cell differentiation involved in immune response positive regulation of T-helper 1 cell differentiation positive regulation of developmental process positive regulation of cell activation anatomical structure development positive regulation of leukocyte activation T cell differentiation positive regulation of immune system process developmental process regulation of biological process positive regulation of T cell activation regulation of adaptive immune response positive regulation of alpha-beta T cell activation regulation of immune response positive regulation of multicellular organismal process leukocyte differentiation cellular developmental process positive regulation of biological process regulation of CD4-positive, alpha-beta T cell differentiation regulation of alpha-beta T cell differentiation lymphocyte activation leukocyte cell-cell adhesion leukocyte activation positive regulation of response to stimulus positive regulation of CD4-positive, alpha-beta T cell activation cell adhesion regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains cell-cell adhesion alpha-beta T cell activation involved in immune response positive regulation of hemopoiesis CD4-positive, alpha-beta T cell activation regulation of multicellular organismal process lymphocyte activation involved in immune response regulation of lymphocyte differentiation regulation of multicellular organismal development positive regulation of cell adhesion biological regulation regulation of T cell activation T cell differentiation involved in immune response adaptive immune response T-helper 1 cell differentiation regulation of hemopoiesis positive regulation of leukocyte differentiation positive regulation of lymphocyte differentiation cell surface receptor signaling pathway signaling signal transduction cell communication positive regulation of macromolecule biosynthetic process positive regulation of metabolic process positive regulation of biosynthetic process regulation of cytokine production cytokine production positive regulation of macromolecule metabolic process regulation of biosynthetic process regulation of interleukin-2 production interleukin-2 production regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process positive regulation of interleukin-2 production regulation of gene expression biosynthetic process positive regulation of gene expression regulation of macromolecule biosynthetic process metabolic process macromolecule metabolic process positive regulation of cytokine production regulation of metabolic process granulocyte macrophage colony-stimulating factor production positive regulation of protein metabolic process positive regulation of granulocyte macrophage colony-stimulating factor production regulation of primary metabolic process protein metabolic process regulation of granulocyte macrophage colony-stimulating factor production regulation of protein metabolic process primary metabolic process positive regulation of DNA-templated transcription RNA metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process positive regulation of nucleobase-containing compound metabolic process nucleobase-containing compound biosynthetic process nucleic acid metabolic process positive regulation of RNA metabolic process positive regulation of RNA biosynthetic process regulation of DNA-templated transcription lymphocyte costimulation T cell costimulation intracellular signal transduction positive regulation of cell communication regulation of signaling positive regulation of signal transduction regulation of signal transduction regulation of cell communication positive regulation of signaling positive regulation of cell population proliferation lymphocyte proliferation regulation of leukocyte proliferation cell population proliferation positive regulation of lymphocyte proliferation positive regulation of T cell proliferation regulation of cell population proliferation mononuclear cell proliferation positive regulation of leukocyte proliferation leukocyte proliferation positive regulation of mononuclear cell proliferation T cell proliferation regulation of lymphocyte proliferation regulation of T cell proliferation regulation of mononuclear cell proliferation regulation of protein modification process positive regulation of phosphorylation regulation of protein phosphorylation peptidyl-tyrosine modification positive regulation of phosphate metabolic process positive regulation of peptidyl-tyrosine phosphorylation positive regulation of protein modification process regulation of phosphate metabolic process peptidyl-amino acid modification phosphate-containing compound metabolic process protein modification process phosphorus metabolic process positive regulation of protein phosphorylation protein phosphorylation positive regulation of phosphorus metabolic process phosphorylation regulation of peptidyl-tyrosine phosphorylation macromolecule modification regulation of phosphorylation regulation of phosphorus metabolic process peptidyl-tyrosine phosphorylation lymphocyte mediated immunity T cell mediated immunity negative regulation of biological process negative regulation of lymphocyte mediated immunity leukocyte mediated immunity regulation of T cell mediated immunity negative regulation of response to stimulus negative regulation of immune response negative regulation of immune effector process negative regulation of adaptive immune response 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 immune system process negative regulation of leukocyte mediated immunity negative regulation of T cell mediated immunity	cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane protein-containing complex protein complex involved in cell adhesion

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A	IPR037676	CD80, IgC-like domain	Domain
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	IPR042711	CD80, immunoglobulin variable domain	Domain
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: P33681	primary biliary cholangitis vitiligo celiac disease psoriasis skin disease arthritic joint disease Biliary Cirrhosis, Secondary cutaneous lupus erythematosus hematologic disease invasive ductal breast carcinoma lung disease ovarian cancer systemic lupus erythematosus autoimmune disease cancer primary biliary cholangitis vitiligo celiac disease psoriasis skin disease arthritic joint disease Biliary Cirrhosis, Secondary cutaneous lupus erythematosus hematologic disease invasive ductal breast carcinoma lung disease ovarian cancer systemic lupus erythematosus autoimmune disease cancer IgA glomerulonephritis juvenile idiopathic arthritis lymphatic system disease rheumatoid arthritis tuberculosis Hashimoto thyroiditis interstitial cystitis lung carcinoma osteosarcoma

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.