6BX8

Human Mesotrypsin (PRSS3) Complexed with Tissue Factor Pathway Inhibitor Variant (TFPI1-KD1-K15R-I17C-I34C)

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	d6bx8a_	All beta proteins	Trypsin-like serine proteases	Trypsin-like serine proteases	Eukaryotic proteases	Trypsin(ogen)	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
C	d6bx8c_	All beta proteins	Trypsin-like serine proteases	Trypsin-like serine proteases	Eukaryotic proteases	Trypsin(ogen)	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
E	d6bx8e_	All beta proteins	Trypsin-like serine proteases	Trypsin-like serine proteases	Eukaryotic proteases	Trypsin(ogen)	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
G	d6bx8g_	All beta proteins	Trypsin-like serine proteases	Trypsin-like serine proteases	Eukaryotic proteases	Trypsin(ogen)	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d6bx8b_	Small proteins	BPTI-like	BPTI-like	automated matches	automated matches	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
D	d6bx8d_	Small proteins	BPTI-like	BPTI-like	automated matches	automated matches	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
F	d6bx8f_	Small proteins	BPTI-like	BPTI-like	automated matches	automated matches	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
H	d6bx8h_	Small proteins	BPTI-like	BPTI-like	automated matches	automated matches	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	Trypsin-like serine proteases	8036274	3000114	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Trypsin-like serine proteases	8036274	3000114	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Trypsin-like serine proteases	8036274	3000114	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	Trypsin-like serine proteases	8036274	3000114	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	Trypsin_1	e6bx8A1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel 2	F: Trypsin_1	ECOD (1.6)
C	Trypsin_1	e6bx8C1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel 2	F: Trypsin_1	ECOD (1.6)
E	Trypsin_1	e6bx8E1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel 2	F: Trypsin_1	ECOD (1.6)
G	Trypsin_1	e6bx8G1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel 2	F: Trypsin_1	ECOD (1.6)
B	Kunitz_BPTI	e6bx8B1	A: few secondary structure elements	X: BPTI-like (From Topology)	H: BPTI-like (From Topology)	T: BPTI-like	F: Kunitz_BPTI	ECOD (1.6)
D	Kunitz_BPTI	e6bx8D1	A: few secondary structure elements	X: BPTI-like (From Topology)	H: BPTI-like (From Topology)	T: BPTI-like	F: Kunitz_BPTI	ECOD (1.6)
F	Kunitz_BPTI	e6bx8F1	A: few secondary structure elements	X: BPTI-like (From Topology)	H: BPTI-like (From Topology)	T: BPTI-like	F: Kunitz_BPTI	ECOD (1.6)
H	Kunitz_BPTI	e6bx8H1	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	2.40.10.10	Mainly Beta	Beta Barrel	Thrombin, subunit H	Trypsin-like serine proteases	CATH (4.3.0)
C	2.40.10.10	Mainly Beta	Beta Barrel	Thrombin, subunit H	Trypsin-like serine proteases	CATH (4.3.0)
E	2.40.10.10	Mainly Beta	Beta Barrel	Thrombin, subunit H	Trypsin-like serine proteases	CATH (4.3.0)
G	2.40.10.10	Mainly Beta	Beta Barrel	Thrombin, subunit H	Trypsin-like serine proteases	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)
D	4.10.410.10	Few Secondary Structures	Irregular	Factor Xa Inhibitor	Pancreatic trypsin inhibitor Kunitz domain	CATH (4.3.0)
F	4.10.410.10	Few Secondary Structures	Irregular	Factor Xa Inhibitor	Pancreatic trypsin inhibitor Kunitz domain	CATH (4.3.0)
H	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, C, E, G	PF00089	Trypsin (Trypsin)	Trypsin	-	Domain
B, D, F, H	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, C, E, G	Trypsin-3	cation binding ion binding binding calcium ion binding metal ion binding small molecule binding peptidase activity catalytic activity, acting on a protein serine hydrolase activity serine-type peptidase activity hydrolase activity serine-type endopeptidase activity catalytic activity endopeptidase activity	humoral immune response biological process involved in interspecies interaction between organisms response to stimulus response to other organism defense response immune response defense response to symbiont response to external stimulus antimicrobial humoral response response to biotic stimulus defense response to other organism response to stress immune system process response to external biotic stimulus humoral immune response biological process involved in interspecies interaction between organisms response to stimulus response to other organism defense response immune response defense response to symbiont response to external stimulus antimicrobial humoral response response to biotic stimulus defense response to other organism response to stress immune system process response to external biotic stimulus endothelial cell migration cell migration cellular process cell motility proteolysis metabolic process primary metabolic process protein metabolic process macromolecule metabolic process zymogen activation cellular biosynthetic process cellular metabolic process gene expression macromolecule biosynthetic process protein maturation biosynthetic process protein processing multicellular organismal process digestion	membrane-bounded organelle intracellular anatomical structure tertiary granule lumen membrane-enclosed lumen intracellular vesicle cellular anatomical entity intracellular membrane-bounded organelle endomembrane system intracellular organelle lumen tertiary granule intracellular organelle organelle lumen cytoplasmic vesicle organelle membrane-bounded organelle intracellular anatomical structure tertiary granule lumen membrane-enclosed lumen intracellular vesicle cellular anatomical entity intracellular membrane-bounded organelle endomembrane system intracellular organelle lumen tertiary granule intracellular organelle organelle lumen cytoplasmic vesicle organelle secretory granule secretory vesicle cytoplasm vesicle extracellular region extracellular space
B, D, F, H	Tissue factor pathway 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 cellular response to stimulus response to lipid response to endogenous stimulus 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 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 process cellular response to steroid hormone stimulus response to organic cyclic compound cellular response to hormone stimulus regulation of response to external stimulus negative regulation of biological process regulation of response to wounding regulation of coagulation regulation of response to stress regulation of multicellular organismal process regulation of hemostasis regulation of biological process 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	membrane cellular anatomical entity 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 membrane cellular anatomical entity 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

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, C, E, G	IPR009003	Peptidase S1, PA clan	Homologous Superfamily
A, C, E, G	IPR001314	Peptidase S1A, chymotrypsin family	Family
A, C, E, G	IPR001254	Serine proteases, trypsin domain	Domain
A, C, E, G	IPR043504	Peptidase S1, PA clan, chymotrypsin-like fold	Homologous Superfamily
A, C, E, G	IPR050127	Serine Proteases (Peptidase S1 Family)	Family
A, C, E, G	IPR018114	Serine proteases, trypsin family, histidine active site	Active Site
B, D, F, H	IPR020901	Proteinase inhibitor I2, Kunitz, conserved site	Conserved Site
B, D, F, H	IPR036880	Pancreatic trypsin inhibitor Kunitz domain superfamily	Homologous Superfamily
B, D, F, H	IPR002223	Pancreatic trypsin inhibitor Kunitz domain	Domain
B, D, F, H	IPR008296	Tissue factor pathway inhibitor-like	Family
B, D, F, H	IPR050098	Tissue factor pathway inhibitor/Kunitz-type serine protease inhibitor-like	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, C, E, G	Pharos: P35030	urinary bladder cancer primitive neuroectodermal tumor astrocytic tumor diabetes mellitus large cell medulloblastoma malignant mesothelioma oligodendroglioma pancreatic intraductal papillary-mucinous neoplasm Prevention of deep vein thrombosis psoriasis urinary bladder neoplasm atypical teratoid rhabdoid tumor glioblastoma malignant ependymoma malignant pancreatic neoplasm urinary bladder cancer primitive neuroectodermal tumor astrocytic tumor diabetes mellitus large cell medulloblastoma malignant mesothelioma oligodendroglioma pancreatic intraductal papillary-mucinous neoplasm Prevention of deep vein thrombosis psoriasis urinary bladder neoplasm atypical teratoid rhabdoid tumor glioblastoma malignant ependymoma malignant pancreatic neoplasm pancreatic ductal adenocarcinoma pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia subependymal giant cell astrocytoma cystic fibrosis Hashimoto thyroiditis malignant glioma medulloblastoma pancreatic intraductal papillary-mucinous carcinoma pilocytic astrocytoma
B, D, F, H	Pharos: P10646	thrombotic thrombocytopenic purpura Venous Thrombosis juvenile idiopathic arthritis thrombophilia hydrolethalus syndrome IgA glomerulonephritis invasive ductal breast carcinoma lung adenocarcinoma atopic eczema malignant colon neoplasm breast cancer malignant mesothelioma 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 atopic eczema malignant colon neoplasm breast cancer malignant mesothelioma congenital thrombotic thrombocytopenic purpura non-small cell lung carcinoma Duchenne muscular dystrophy pilocytic astrocytoma exocrine pancreatic carcinoma psoriasis thrombophilia due to activated protein C resistance gastric carcinoma tuberculosis interstitial cystitis adenoma lung cancer atypical teratoid rhabdoid tumor malignant ependymoma breast carcinoma malignant pancreatic neoplasm cystic fibrosis ovarian cancer ductal breast carcinoma in situ pituitary cancer facioscapulohumeral muscular dystrophy Sjogren syndrome thrombotic disease glioblastoma ulcerative colitis interstitial lung disease juvenile dermatomyositis astrocytic tumor lung carcinoma Barrett esophagus malignant glioma myopathy pancreatic ductal adenocarcinoma esophageal adenocarcinoma primitive neuroectodermal tumor

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.