5DU3

Active form of human C1-inhibitor

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: ECOD Classification
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	d5du3a_	Multi-domain proteins (alpha and beta)	Serpins	Serpins	automated matches	automated matches	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d5du3b_	Multi-domain proteins (alpha and beta)	Serpins	Serpins	automated matches	automated matches	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Serpin	e5du3A1	A: a+b complex topology	X: Serpins (From Topology)	H: Serpins (From Topology)	T: Serpins	F: Serpin	ECOD (1.6)
B	Serpin	e5du3B1	A: a+b complex topology	X: Serpins (From Topology)	H: Serpins (From Topology)	T: Serpins	F: Serpin	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00079	Serpin (serine protease inhibitor) (Serpin)	Serpin (serine protease inhibitor)	Structure is a multi-domain fold containing a bundle of helices and a beta sandwich.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Plasma protease C1 inhibitor	enzyme regulator activity molecular function inhibitor activity peptidase regulator activity serine-type endopeptidase inhibitor activity molecular function regulator activity enzyme inhibitor activity peptidase inhibitor activity endopeptidase regulator activity endopeptidase inhibitor activity	multicellular organismal process regulation of body fluid levels wound healing response to stimulus hemostasis biological regulation blood coagulation response to stress coagulation regulation of biological quality response to wounding adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains lymphocyte mediated immunity humoral immune response multicellular organismal process regulation of body fluid levels wound healing response to stimulus hemostasis biological regulation blood coagulation response to stress coagulation regulation of biological quality response to wounding adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains lymphocyte mediated immunity humoral immune response positive regulation of biological process positive regulation of response to stimulus complement activation humoral immune response mediated by circulating immunoglobulin positive regulation of immune response leukocyte mediated immunity regulation of immune system process positive regulation of immune system process complement activation, classical pathway regulation of biological process immune response immunoglobulin mediated immune response adaptive immune response immune effector process regulation of response to stimulus immune system process B cell mediated immunity regulation of immune response activation of immune response regulation of humoral immune response regulation of immune effector process negative regulation of biological process response to biotic stimulus complement activation, lectin pathway response to other organism negative regulation of immune response regulation of innate immune response negative regulation of immune effector process negative regulation of humoral immune response response to external stimulus defense response to other organism negative regulation of response to external stimulus negative regulation of defense response regulation of complement activation regulation of defense response regulation of response to biotic stimulus biological process involved in interspecies interaction between organisms regulation of response to external stimulus negative regulation of response to biotic stimulus negative regulation of complement activation regulation of response to stress innate immune response response to external biotic stimulus regulation of complement activation, lectin pathway negative regulation of response to stimulus defense response defense response to symbiont negative regulation of immune system process negative regulation of complement activation, lectin pathway negative regulation of innate immune response negative regulation of hydrolase activity negative regulation of proteolysis regulation of cellular process regulation of catalytic activity negative regulation of catalytic activity regulation of primary metabolic process negative regulation of peptidase activity regulation of proteolysis proteolysis negative regulation of cellular process protein metabolic process negative regulation of protein metabolic process negative regulation of macromolecule metabolic process regulation of protein metabolic process negative regulation of metabolic process negative regulation of molecular function regulation of peptidase activity primary metabolic process regulation of macromolecule metabolic process regulation of molecular function regulation of hydrolase activity metabolic process cellular process macromolecule metabolic process regulation of metabolic process regulation of response to wounding regulation of coagulation regulation of multicellular organismal process regulation of hemostasis negative regulation of wound healing regulation of blood coagulation negative regulation of blood coagulation negative regulation of response to wounding negative regulation of hemostasis fibrinolysis negative regulation of coagulation regulation of wound healing negative regulation of multicellular organismal process system process circulatory system process blood circulation	cellular anatomical structure extracellular region extracellular space blood microparticle membrane-bounded organelle intracellular anatomical structure membrane-enclosed lumen intracellular membrane-bounded organelle endomembrane system intracellular organelle lumen endoplasmic reticulum lumen intracellular organelle organelle lumen organelle cellular anatomical structure extracellular region extracellular space blood microparticle membrane-bounded organelle intracellular anatomical structure membrane-enclosed lumen intracellular membrane-bounded organelle endomembrane system intracellular organelle lumen endoplasmic reticulum lumen intracellular organelle organelle lumen organelle endoplasmic reticulum cytoplasm extracellular exosome extracellular vesicle extracellular organelle vesicle extracellular membrane-bounded organelle cell periphery extracellular matrix external encapsulating structure collagen-containing extracellular matrix vesicle lumen intracellular vesicle cytoplasmic vesicle lumen secretory granule lumen cytoplasmic vesicle secretory granule secretory vesicle platelet alpha granule platelet alpha granule lumen

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR023795	Serpin, conserved site	Conserved Site
A, B	IPR000215	Serpin family	Family
A, B	IPR023796	Serpin domain	Domain
A, B	IPR042178	Serpin superfamily, domain 1	Homologous Superfamily
A, B	IPR042185	Serpin superfamily, domain 2	Homologous Superfamily
A, B	IPR036186	Serpin superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: P05155	hereditary angioedema C1 inhibitor deficiency acquired angioedema influenza cirrhosis of liver lupus nephritis Hereditary Angioedema Types I and II angioedema ductal breast carcinoma in situ non-small cell lung carcinoma pancreatic intraductal papillary-mucinous carcinoma pilocytic astrocytoma hereditary angioedema type 2 primitive neuroectodermal tumor hereditary angioedema with C1Inh deficiency hereditary angioedema C1 inhibitor deficiency acquired angioedema influenza cirrhosis of liver lupus nephritis Hereditary Angioedema Types I and II angioedema ductal breast carcinoma in situ non-small cell lung carcinoma pancreatic intraductal papillary-mucinous carcinoma pilocytic astrocytoma hereditary angioedema type 2 primitive neuroectodermal tumor hereditary angioedema with C1Inh deficiency subependymal giant cell astrocytoma ulcerative colitis atypical teratoid rhabdoid tumor limb-girdle muscular dystrophy breast carcinoma lung cancer dermatomyositis malignant mesothelioma drug-induced liver injury multiple sclerosis Emery-Dreifuss muscular dystrophy ovarian cancer gastric carcinoma pancreatic intraductal papillary-mucinous neoplasm pituitary cancer psoriasis systemic lupus erythematosus adrenal cortex carcinoma invasive ductal breast carcinoma urticaria autism spectrum disorder lung adenocarcinoma breast fibroadenoma lung carcinoma malignant ependymoma Duchenne muscular dystrophy myopathy endogenous depression pancreatic ductal adenocarcinoma glioblastoma pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia polycystic ovary syndrome sarcoidosis tuberculosis juvenile dermatomyositis breast cancer lung benign neoplasm chronic kidney disease cystic fibrosis malignant glioma medulloblastoma

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.