Annotations: 6F4U

Crystal structure of reactive loop cleaved kallistatin at 1.9 angstrom resolution

External Resource: Annotation

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: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Serpins	8070163	3001563	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 D]	Serpin	e6f4uD01	A: beta barrels	X: Ribonuclease H-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: Serpin	ECOD (v294.2)
A	ubiquitin	e6f4uA1	A: beta barrels	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: ubiquitin	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.497.10	Alpha Beta	2-Layer Sandwich	Antithrombin	Chain I, domain 2	CATH (4.3.0)
A	2.30.39.10	Mainly Beta	Roll	Alpha-1-antitrypsin	domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	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
B [auth D]	Kallistatin	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	-	membrane-bounded organelle vesicle lumen intracellular anatomical structure intracellular vesicle membrane-enclosed lumen cytoplasmic vesicle lumen intracellular membrane-bounded organelle secretory granule lumen endomembrane system intracellular organelle lumen intracellular organelle cellular anatomical structure platelet dense granule lumen cytoplasmic vesicle membrane-bounded organelle vesicle lumen intracellular anatomical structure intracellular vesicle membrane-enclosed lumen cytoplasmic vesicle lumen intracellular membrane-bounded organelle secretory granule lumen endomembrane system intracellular organelle lumen intracellular organelle cellular anatomical structure platelet dense granule lumen cytoplasmic vesicle organelle lumen platelet dense granule organelle secretory granule secretory vesicle cytoplasm vesicle extracellular region extracellular exosome extracellular vesicle extracellular organelle extracellular membrane-bounded organelle
A	Kallistatin	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	-	membrane-bounded organelle vesicle lumen intracellular anatomical structure intracellular vesicle membrane-enclosed lumen cytoplasmic vesicle lumen intracellular membrane-bounded organelle secretory granule lumen endomembrane system intracellular organelle lumen intracellular organelle cellular anatomical structure platelet dense granule lumen cytoplasmic vesicle membrane-bounded organelle vesicle lumen intracellular anatomical structure intracellular vesicle membrane-enclosed lumen cytoplasmic vesicle lumen intracellular membrane-bounded organelle secretory granule lumen endomembrane system intracellular organelle lumen intracellular organelle cellular anatomical structure platelet dense granule lumen cytoplasmic vesicle organelle lumen platelet dense granule organelle secretory granule secretory vesicle cytoplasm vesicle extracellular region extracellular exosome extracellular vesicle extracellular organelle extracellular membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

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

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
B [auth D]	: P29622	malignant mesothelioma Liver Cirrhosis, Experimental hepatocellular carcinoma psoriasis malignant pancreatic neoplasm pancreatic ductal adenocarcinoma
A	: P29622	malignant mesothelioma Liver Cirrhosis, Experimental hepatocellular carcinoma psoriasis malignant pancreatic neoplasm pancreatic ductal adenocarcinoma

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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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.