Annotations: 8C1C

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B [auth L]	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8091527	3000071	SCOP2B (2022-06-29)
E [auth Y]	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8091527	3000071	SCOP2B (2022-06-29)
C [auth R]	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8055592	3000071	SCOP2B (2022-06-29)
C [auth R]	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8054823	3000071	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)
B [auth L]	PF07654	e8c1cL1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF07654	ECOD (1.6)
E [auth Y]	PF07654	e8c1cY1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF07654	ECOD (1.6)
A [auth H]	PF07654	e8c1cH3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF07654	ECOD (1.6)
D [auth X]	PF07654	e8c1cX3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF07654	ECOD (1.6)
C [auth R]	PF13895	e8c1cR1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF13895	ECOD (1.6)
C [auth R]	PF13927	e8c1cR2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF13927	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B [auth L], E [auth Y]	PF07654	Immunoglobulin C1-set domain (C1-set)	Immunoglobulin C1-set domain	-	Domain
A [auth H], D [auth X]	PF07654	Immunoglobulin C1-set domain (C1-set)	Immunoglobulin C1-set domain	-	Domain
C [auth R]	PF13927	Immunoglobulin domain (Ig_3)	Immunoglobulin domain	This family contains immunoglobulin-like domains.	Domain
C [auth R]	PF13895	Immunoglobulin domain (Ig_2)	Immunoglobulin domain	This domain contains immunoglobulin-like domains.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B [auth L], E [auth Y]	Immunoglobulin kappa constant	binding antigen binding	adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains lymphocyte mediated immunity response to stimulus immune response immune system process B cell mediated immunity leukocyte mediated immunity immunoglobulin mediated immune response adaptive immune response immune effector process cellular response to stimulus immune response-regulating cell surface receptor signaling pathway regulation of cellular process signaling adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains lymphocyte mediated immunity response to stimulus immune response immune system process B cell mediated immunity leukocyte mediated immunity immunoglobulin mediated immune response adaptive immune response immune effector process cellular response to stimulus immune response-regulating cell surface receptor signaling pathway regulation of cellular process signaling positive regulation of biological process cell communication positive regulation of response to stimulus immune response-activating signaling pathway immune response-regulating signaling pathway positive regulation of immune response regulation of immune system process signal transduction positive regulation of immune system process regulation of biological process cell surface receptor signaling pathway immune response-activating cell surface receptor signaling pathway B cell receptor signaling pathway biological regulation regulation of response to stimulus regulation of immune response cellular process antigen receptor-mediated signaling pathway activation of immune response	protein-containing complex IgA immunoglobulin complex immunoglobulin complex extracellular region extracellular space cellular anatomical entity blood microparticle IgM immunoglobulin complex IgE immunoglobulin complex IgD immunoglobulin complex extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle protein-containing complex IgA immunoglobulin complex immunoglobulin complex extracellular region extracellular space cellular anatomical entity blood microparticle IgM immunoglobulin complex IgE immunoglobulin complex IgD immunoglobulin complex extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle organelle vesicle extracellular membrane-bounded organelle cell periphery plasma membrane membrane IgG immunoglobulin complex
A [auth H], D [auth X]	Immunoglobulin heavy constant epsilon	protein binding binding signaling receptor binding immunoglobulin receptor binding antigen binding	adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains lymphocyte mediated immunity B cell antigen processing and presentation response to stimulus immune response adaptive immune response immune effector process antigen processing and presentation immune system process B cell mediated immunity leukocyte mediated immunity myeloid leukocyte mediated immunity inflammatory response to antigenic stimulus response to stress adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains lymphocyte mediated immunity B cell antigen processing and presentation response to stimulus immune response adaptive immune response immune effector process antigen processing and presentation immune system process B cell mediated immunity leukocyte mediated immunity myeloid leukocyte mediated immunity inflammatory response to antigenic stimulus response to stress antibody-dependent cellular cytotoxicity acute inflammatory response hypersensitivity defense response leukocyte mediated cytotoxicity acute inflammatory response to antigenic stimulus immunoglobulin mediated immune response type II hypersensitivity type IIa hypersensitivity cellular process inflammatory response cell killing cellular response to stimulus immune response-regulating cell surface receptor signaling pathway regulation of cellular process signaling positive regulation of biological process cell communication positive regulation of response to stimulus immune response-activating signaling pathway immune response-regulating signaling pathway positive regulation of immune response regulation of immune system process signal transduction positive regulation of immune system process regulation of biological process cell surface receptor signaling pathway immune response-activating cell surface receptor signaling pathway B cell receptor signaling pathway biological regulation regulation of response to stimulus regulation of immune response antigen receptor-mediated signaling pathway activation of immune response humoral immune response complement activation humoral immune response mediated by circulating immunoglobulin complement activation, classical pathway primary adaptive immune response biological process involved in interspecies interaction between organisms response to other organism antibacterial humoral response defense response to symbiont response to external stimulus antimicrobial humoral response response to biotic stimulus defense response to bacterium defense response to other organism response to bacterium response to external biotic stimulus multicellular organismal process cell population proliferation B cell activation cell activation B cell proliferation lymphocyte activation leukocyte proliferation leukocyte activation mononuclear cell proliferation lymphocyte proliferation regulated exocytosis cellular localization transport eosinophil activation cell activation involved in immune response leukocyte degranulation vesicle-mediated transport myeloid leukocyte activation localization secretion by cell establishment of localization in cell leukocyte activation involved in immune response eosinophil degranulation eosinophil activation involved in immune response secretion export from cell establishment of localization myeloid cell activation involved in immune response exocytosis eosinophil mediated immunity granulocyte activation establishment of organelle localization organelle localization mast cell activation mast cell mediated immunity vacuolar localization mast cell degranulation mast cell activation involved in immune response lysosome localization developmental process myeloid leukocyte differentiation cellular developmental process hemopoiesis macrophage differentiation cell development mononuclear cell differentiation myeloid cell differentiation cell differentiation anatomical structure development leukocyte differentiation type 2 immune response import into cell Fc receptor-mediated immune complex endocytosis receptor-mediated endocytosis endocytosis protein-containing complex localization adaptive immune memory response immunological memory process type I hypersensitivity macrophage activation	cell periphery plasma membrane membrane cellular anatomical entity protein-containing complex IgE immunoglobulin complex immunoglobulin complex extracellular region extracellular space immunoglobulin complex, circulating plasma membrane protein complex membrane protein complex IgE B cell receptor complex receptor complex cell periphery plasma membrane membrane cellular anatomical entity protein-containing complex IgE immunoglobulin complex immunoglobulin complex extracellular region extracellular space immunoglobulin complex, circulating plasma membrane protein complex membrane protein complex IgE B cell receptor complex receptor complex B cell receptor complex plasma membrane signaling receptor complex
C [auth R]	High affinity immunoglobulin epsilon receptor subunit alpha	high-affinity IgE receptor activity molecular transducer activity immunoglobulin receptor activity transmembrane signaling receptor activity signaling receptor activity immune receptor activity IgE receptor activity IgE binding protein-containing complex binding binding immunoglobulin binding	cellular response to stimulus regulation of biological process regulation of cellular process cell surface receptor signaling pathway response to stimulus signaling biological regulation cellular process signal transduction cell communication multicellular organismal process regulated exocytosis cellular localization transport cellular response to stimulus regulation of biological process regulation of cellular process cell surface receptor signaling pathway response to stimulus signaling biological regulation cellular process signal transduction cell communication multicellular organismal process regulated exocytosis cellular localization transport eosinophil activation cell activation involved in immune response leukocyte degranulation myeloid leukocyte mediated immunity vesicle-mediated transport myeloid leukocyte activation leukocyte activation localization secretion by cell establishment of localization in cell leukocyte activation involved in immune response eosinophil degranulation leukocyte mediated immunity eosinophil activation involved in immune response secretion immune response cell activation export from cell establishment of localization myeloid cell activation involved in immune response immune effector process exocytosis immune system process eosinophil mediated immunity granulocyte activation establishment of organelle localization organelle localization mast cell activation mast cell mediated immunity vacuolar localization mast cell degranulation mast cell activation involved in immune response lysosome localization type 2 immune response adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains lymphocyte mediated immunity hypersensitivity defense response acute inflammatory response to antigenic stimulus type I hypersensitivity immunoglobulin mediated immune response adaptive immune response inflammatory response to antigenic stimulus response to stress B cell mediated immunity inflammatory response acute inflammatory response regulation of response to stimulus regulation of immune response regulation of immune system process	cell surface cellular anatomical entity cell periphery plasma membrane membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B [auth L], E [auth Y]	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
B [auth L], E [auth Y]	IPR003597	Immunoglobulin C1-set	Domain
B [auth L], E [auth Y]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
B [auth L], E [auth Y]	IPR007110	Immunoglobulin-like domain	Domain
B [auth L], E [auth Y]	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site
A [auth H], D [auth X]	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A [auth H], D [auth X]	IPR003597	Immunoglobulin C1-set	Domain
A [auth H], D [auth X]	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site
A [auth H], D [auth X]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A [auth H], D [auth X]	IPR007110	Immunoglobulin-like domain	Domain
C [auth R]	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
C [auth R]	IPR003599	Immunoglobulin subtype	Domain
C [auth R]	IPR003598	Immunoglobulin subtype 2	Domain
C [auth R]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
C [auth R]	IPR007110	Immunoglobulin-like domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
B [auth L], E [auth Y]	Pharos: P01834	recurrent infections associated with rare immunoglobulin isotypes deficiency myositis dysgammaglobulinemia Hepatomegaly acquired idiopathic inflammatory myopathy selective IgG immunodeficiency
A [auth H], D [auth X]	Pharos: P01854	asthma seasonal allergic rhinitis Chronic idiopathic urticaria psoriasis
C [auth R]	Pharos: P12319	urticaria Drug Eruptions drug allergy pilocytic astrocytoma acute myeloid leukemia chronic obstructive pulmonary disease head and neck cancer lung cancer ovarian cancer psoriasis atopic eczema cutaneous lupus erythematosus esophageal adenocarcinoma interstitial cystitis malignant pancreatic neoplasm urticaria Drug Eruptions drug allergy pilocytic astrocytoma acute myeloid leukemia chronic obstructive pulmonary disease head and neck cancer lung cancer ovarian cancer psoriasis atopic eczema cutaneous lupus erythematosus esophageal adenocarcinoma interstitial cystitis malignant pancreatic neoplasm non-small cell lung carcinoma pancreatic intraductal papillary-mucinous carcinoma tuberculosis Barrett esophagus exocrine pancreatic carcinoma invasive ductal breast carcinoma MALT lymphoma 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 R01GM133198.