4BQD

KD1 of human TFPI in complex with a synthetic peptide

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations
Protein Modification Annotation

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Kunitz_BPTI	e4bqdA1	A: few secondary structure elements	X: BPTI-like (From Topology)	H: BPTI-like (From Topology)	T: BPTI-like	F: Kunitz_BPTI	ECOD (1.6)
B	Kunitz_BPTI	e4bqdB1	A: few secondary structure elements	X: BPTI-like (From Topology)	H: BPTI-like (From Topology)	T: BPTI-like	F: Kunitz_BPTI	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	4.10.410.10	Few Secondary Structures	Irregular	Factor Xa Inhibitor	Pancreatic trypsin inhibitor Kunitz domain	CATH (4.3.0)
B	4.10.410.10	Few Secondary Structures	Irregular	Factor Xa Inhibitor	Pancreatic trypsin inhibitor Kunitz domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00014	Kunitz/Bovine pancreatic trypsin inhibitor domain (Kunitz_BPTI)	Kunitz/Bovine pancreatic trypsin inhibitor domain	Indicative of a protease inhibitor, usually a serine protease inhibitor. Structure is a disulfide rich alpha+beta fold. BPTI (bovine pancreatic trypsin inhibitor) is an extensively studied model structure. Certain family members are similar to the ...	Indicative of a protease inhibitor, usually a serine protease inhibitor. Structure is a disulfide rich alpha+beta fold. BPTI (bovine pancreatic trypsin inhibitor) is an extensively studied model structure. Certain family members are similar to the tick anticoagulant peptide (TAP, Swiss:P17726). This is a highly selective inhibitor of factor Xa in the blood coagulation pathways [1]. TAP molecules are highly dipolar [2], and are arranged to form a twisted two- stranded antiparallel beta-sheet followed by an alpha helix [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	TISSUE FACTOR PATHWAY INHIBITOR (LIPOPROTEIN-ASSOCIATED COAGULATION INHIBITOR) VARIANT	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 negative regulation of hydrolase activity negative regulation of proteolysis regulation of cellular process 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 negative regulation of hydrolase activity negative regulation of proteolysis regulation of cellular process regulation of catalytic activity negative regulation of biological process 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 biological 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 cellular response to stimulus response to lipid response to endogenous stimulus cellular response to organic cyclic compound cellular response to endogenous stimulus cellular response to chemical stimulus response to hormone response to chemical response to steroid hormone cellular response to lipid cellular response to steroid hormone stimulus response to organic cyclic compound cellular response to hormone stimulus regulation of response to external stimulus regulation of response to wounding regulation of coagulation regulation of response to stress regulation of multicellular organismal process regulation of hemostasis negative regulation of response to stimulus negative regulation of wound healing regulation of blood coagulation negative regulation of blood coagulation response to external stimulus negative regulation of response to wounding negative regulation of hemostasis negative regulation of coagulation regulation of response to stimulus negative regulation of response to external stimulus regulation of wound healing negative regulation of multicellular organismal process	cellular anatomical structure membrane side of membrane extracellular region cell surface membrane microdomain cell periphery membrane raft plasma membrane raft plasma membrane plasma membrane region caveola extracellular space membrane-bounded organelle cellular anatomical structure membrane side of membrane extracellular region cell surface membrane microdomain cell periphery membrane raft plasma membrane raft plasma membrane plasma membrane region caveola extracellular space membrane-bounded organelle intracellular organelle intracellular anatomical structure organelle endoplasmic reticulum cytoplasm intracellular membrane-bounded organelle endomembrane system
C, D	PEPTIDE	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR020901	Proteinase inhibitor I2, Kunitz, conserved site	Conserved Site
A, B	IPR036880	Pancreatic trypsin inhibitor Kunitz domain superfamily	Homologous Superfamily
A, B	IPR002223	Pancreatic trypsin inhibitor Kunitz domain	Domain
A, B	IPR008296	Tissue factor pathway inhibitor-like	Family
A, B	IPR050098	Tissue factor pathway inhibitor/Kunitz-type serine protease inhibitor-like	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: P10646	thrombotic thrombocytopenic purpura Venous Thrombosis juvenile idiopathic arthritis thrombophilia hydrolethalus syndrome IgA glomerulonephritis invasive ductal breast carcinoma lung adenocarcinoma malignant colon neoplasm atopic eczema malignant mesothelioma breast cancer congenital thrombotic thrombocytopenic purpura non-small cell lung carcinoma Duchenne muscular dystrophy thrombotic thrombocytopenic purpura Venous Thrombosis juvenile idiopathic arthritis thrombophilia hydrolethalus syndrome IgA glomerulonephritis invasive ductal breast carcinoma lung adenocarcinoma malignant colon neoplasm atopic eczema malignant mesothelioma breast cancer congenital thrombotic thrombocytopenic purpura non-small cell lung carcinoma Duchenne muscular dystrophy pilocytic astrocytoma exocrine pancreatic carcinoma psoriasis gastric carcinoma thrombophilia due to activated protein C resistance tuberculosis interstitial cystitis adenoma lung cancer malignant ependymoma atypical teratoid rhabdoid tumor breast carcinoma malignant pancreatic neoplasm cystic fibrosis ovarian cancer ductal breast carcinoma in situ pituitary cancer facioscapulohumeral muscular dystrophy Sjogren syndrome glioblastoma thrombotic disease ulcerative colitis interstitial lung disease juvenile dermatomyositis lung carcinoma astrocytic tumor malignant glioma Barrett esophagus myopathy pancreatic ductal adenocarcinoma esophageal adenocarcinoma primitive neuroectodermal tumor

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
C, D	ACE	RESID: AA0041 , AA0042 , AA0043 , AA0044 , AA0045 , AA0046 , AA0049 , AA0050 , AA0051 , AA0052 , AA0053 , AA0054 , AA0354 PSI-MOD : N-acetyl-L-alanine MOD:00050 , N-acetyl-L-aspartic acid MOD:00051 , N-acetyl-L-cysteine MOD:00052 , N-acetyl-S-archeol-cysteine MOD:00897 , N-acetyl-L-glutamic acid MOD:00053 , N-acetyl-L-glutamine MOD:00054 , N-acetylglycine MOD:00055 , N-acetyl-L-methionine MOD:00058 , N-acetyl-L-proline MOD:00059 , N-acetyl-L-serine MOD:00060 , N,O-diacetylated L-serine MOD:00648 , N-acetyl-L-threonine MOD:00061 , N-acetyl-L-tyrosine MOD:00062 , N-acetyl-L-valine MOD:00063 , N2-acetyl-L-arginine MOD:00359
C, D	AIB	Parent Component: ALA RESID: AA0041 , AA0042 , AA0043 , AA0044 , AA0045 , AA0046 , AA0049 , AA0050 , AA0051 , AA0052 , AA0053 , AA0054 , AA0354

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.