1OK3

Decay accelerating factor (cd55): the structure of an intact human complement regulator.

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1ok3a1	Small proteins	Complement control module/SCR domain	Complement control module/SCR domain	Complement control module/SCR domain	Complement decay-accelerating factor (Daf, CD55)	HUMAN (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d1ok3a6	Artifacts	Tags	Tags	Tags	C-terminal Tags	HUMAN (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d1ok3a5	Artifacts	Tags	Tags	Tags	N-terminal Tags	HUMAN (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d1ok3b1	Small proteins	Complement control module/SCR domain	Complement control module/SCR domain	Complement control module/SCR domain	Complement decay-accelerating factor (Daf, CD55)	HUMAN (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d1ok3b6	Artifacts	Tags	Tags	Tags	C-terminal Tags	HUMAN (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d1ok3b5	Artifacts	Tags	Tags	Tags	N-terminal Tags	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	SCOP2B Superfamily	Sushi/CCP/SCR domain	8044483	3000902	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Sushi/CCP/SCR domain	8044485	3000902	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Sushi/CCP/SCR domain	8044485	3000902	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Sushi/CCP/SCR domain	8044483	3000902	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)
A	Sushi_4	e1ok3A4	A: few secondary structure elements	X: EGF-like	H: EGF-related	T: Complement control module/SCR domain	F: Sushi_4	ECOD (1.6)
A	Sushi_3	e1ok3A1	A: few secondary structure elements	X: EGF-like	H: EGF-related	T: Complement control module/SCR domain	F: Sushi_3	ECOD (1.6)
A	Sushi_1	e1ok3A2	A: few secondary structure elements	X: EGF-like	H: EGF-related	T: Complement control module/SCR domain	F: Sushi_1	ECOD (1.6)
B	Sushi_4	e1ok3B4	A: few secondary structure elements	X: EGF-like	H: EGF-related	T: Complement control module/SCR domain	F: Sushi_4	ECOD (1.6)
B	Sushi_3	e1ok3B1	A: few secondary structure elements	X: EGF-like	H: EGF-related	T: Complement control module/SCR domain	F: Sushi_3	ECOD (1.6)
B	Sushi_1	e1ok3B2	A: few secondary structure elements	X: EGF-like	H: EGF-related	T: Complement control module/SCR domain	F: Sushi_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.10.70.10	Mainly Beta	Ribbon	Complement Module	domain 1	CATH (4.3.0)
B	2.10.70.10	Mainly Beta	Ribbon	Complement Module	domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00084	Sushi repeat (SCR repeat) (Sushi)	Sushi repeat (SCR repeat)	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	COMPLEMENT DECAY-ACCELERATING FACTOR	protein binding binding virus receptor activity exogenous protein binding lipid binding	multicellular organismal process regulation of cellular process regulation of alpha-beta T cell activation regulation of leukocyte activation positive regulation of biological process regulation of cell activation positive regulation of leukocyte cell-cell adhesion lymphocyte activation leukocyte cell-cell adhesion leukocyte activation positive regulation of cell-cell adhesion positive regulation of CD4-positive, alpha-beta T cell activation positive regulation of lymphocyte activation positive regulation of cell activation cell adhesion multicellular organismal process regulation of cellular process regulation of alpha-beta T cell activation regulation of leukocyte activation positive regulation of biological process regulation of cell activation positive regulation of leukocyte cell-cell adhesion lymphocyte activation leukocyte cell-cell adhesion leukocyte activation positive regulation of cell-cell adhesion positive regulation of CD4-positive, alpha-beta T cell activation positive regulation of lymphocyte activation positive regulation of cell activation cell adhesion cell-cell adhesion T cell activation CD4-positive, alpha-beta T cell activation positive regulation of leukocyte activation alpha-beta T cell activation regulation of multicellular organismal process regulation of immune system process regulation of cell-cell adhesion positive regulation of immune system process positive regulation of cellular process regulation of biological process positive regulation of T cell activation positive regulation of cell adhesion regulation of cell adhesion cell activation biological regulation regulation of T cell activation positive regulation of alpha-beta T cell activation regulation of CD4-positive, alpha-beta T cell activation immune system process regulation of leukocyte cell-cell adhesion positive regulation of multicellular organismal process cellular process regulation of lymphocyte activation positive regulation of cytosolic calcium ion concentration regulation of biological quality adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains regulation of immune effector process lymphocyte mediated immunity T cell mediated immunity positive regulation of leukocyte mediated immunity response to stimulus T cell cytokine production positive regulation of macromolecule biosynthetic process positive regulation of metabolic process positive regulation of immune response cytokine production leukocyte mediated immunity positive regulation of macromolecule metabolic process positive regulation of adaptive immune response positive regulation of T cell cytokine production regulation of T cell mediated immunity regulation of cytokine production involved in immune response immune response regulation of adaptive immune response immune effector process regulation of gene expression regulation of leukocyte mediated immunity biosynthetic process regulation of response to stimulus positive regulation of production of molecular mediator of immune response regulation of immune response metabolic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of production of molecular mediator of immune response positive regulation of cytokine production regulation of metabolic process positive regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains positive regulation of lymphocyte mediated immunity positive regulation of response to stimulus regulation of T cell cytokine production regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains positive regulation of biosynthetic process regulation of cytokine production positive regulation of immune effector process cytokine production involved in immune response production of molecular mediator of immune response regulation of biosynthetic process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process adaptive immune response regulation of lymphocyte mediated immunity positive regulation of gene expression positive regulation of T cell mediated immunity positive regulation of cytokine production involved in immune response humoral immune response complement activation humoral immune response mediated by circulating immunoglobulin complement activation, classical pathway immunoglobulin mediated immune response B cell mediated immunity activation of immune response regulation of humoral immune response negative regulation of biological process negative regulation of complement activation negative regulation of response to stimulus negative regulation of immune response negative regulation of immune effector process negative regulation of humoral immune response negative regulation of immune system process regulation of complement activation biological process involved in interspecies interaction between organisms response to other organism defense response defense response to symbiont response to external stimulus response to biotic stimulus defense response to other organism response to stress innate immune response response to external biotic stimulus regulation of lipopolysaccharide-mediated signaling pathway cellular response to stimulus regulation of response to biotic stimulus response to lipid regulation of response to external stimulus signaling cellular response to lipopolysaccharide regulation of signal transduction cell communication lipopolysaccharide-mediated signaling pathway cellular response to biotic stimulus response to bacterium signal transduction regulation of signaling cell surface receptor signaling pathway response to oxygen-containing compound cellular response to molecule of bacterial origin response to lipopolysaccharide cellular response to oxygen-containing compound cellular response to chemical stimulus response to chemical cellular response to lipid regulation of cell communication response to molecule of bacterial origin regulation of complement-dependent cytotoxicity regulation of cell killing complement-dependent cytotoxicity cell killing positive regulation of cell population proliferation positive regulation of alpha-beta T cell proliferation positive regulation of CD4-positive, alpha-beta T cell proliferation alpha-beta T cell proliferation lymphocyte proliferation regulation of leukocyte proliferation cell population proliferation regulation of CD4-positive, alpha-beta T cell 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 regulation of alpha-beta T cell proliferation positive regulation of mononuclear cell proliferation T cell proliferation regulation of lymphocyte proliferation CD4-positive, alpha-beta T cell proliferation regulation of T cell proliferation regulation of mononuclear cell proliferation respiratory burst	extracellular exosome membrane-bounded organelle extracellular vesicle cellular anatomical structure extracellular organelle extracellular region organelle extracellular space vesicle extracellular membrane-bounded organelle cell surface cell periphery plasma membrane membrane extracellular exosome membrane-bounded organelle extracellular vesicle cellular anatomical structure extracellular organelle extracellular region organelle extracellular space vesicle extracellular membrane-bounded organelle cell surface cell periphery plasma membrane membrane membrane microdomain membrane raft intracellular anatomical structure transport vesicle intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle cytoplasm side of membrane cytoplasmic vesicle membrane bounding membrane of organelle vesicle membrane secretory granule secretory vesicle organelle membrane secretory granule membrane Golgi membrane Golgi apparatus endoplasmic reticulum-Golgi intermediate compartment membrane endoplasmic reticulum-Golgi intermediate compartment ficolin-1-rich granule membrane ficolin-1-rich granule tertiary granule

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR000436	Sushi/SCR/CCP domain	Domain
A, B	IPR035976	Sushi/SCR/CCP superfamily	Homologous Superfamily
A, B	IPR050350	Complement & Cell Adhesion Regulators	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: P08174	protein-losing enteropathy endometriosis amphetamine abuse lung cancer malignant mesothelioma myopathy oligodendroglioma adrenal cortex carcinoma pancreatic intraductal papillary-mucinous carcinoma Amphetamine-Related Disorders Barrett esophagus tuberculosis gastric carcinoma interstitial lung disease lung carcinoma protein-losing enteropathy endometriosis amphetamine abuse lung cancer malignant mesothelioma myopathy oligodendroglioma adrenal cortex carcinoma pancreatic intraductal papillary-mucinous carcinoma Amphetamine-Related Disorders Barrett esophagus tuberculosis gastric carcinoma interstitial lung disease lung carcinoma malignant pancreatic neoplasm nasopharyngeal carcinoma ovarian cancer pancreatic intraductal papillary-mucinous neoplasm astrocytic tumor proteinuria ulcerative colitis breast cancer dermatomyositis lung adenocarcinoma malignant glioma medulloblastoma non-small cell lung carcinoma pancreatic ductal adenocarcinoma pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia atopic eczema spina bifida common variable immunodeficiency Down syndrome esophageal adenocarcinoma interstitial cystitis

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.