1HIA

KALLIKREIN COMPLEXED WITH HIRUSTASIN

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

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1hia.1	All beta proteins	Trypsin-like serine proteases	Trypsin-like serine proteases	Eukaryotic proteases	Kallikrein A	pig (Sus scrofa ) [TaxId: 9823 ],	SCOPe (2.08)
D [auth X]	d1hia.2	All beta proteins	Trypsin-like serine proteases	Trypsin-like serine proteases	Eukaryotic proteases	Kallikrein A	pig (Sus scrofa ) [TaxId: 9823 ],	SCOPe (2.08)
B	d1hia.1	All beta proteins	Trypsin-like serine proteases	Trypsin-like serine proteases	Eukaryotic proteases	Kallikrein A	pig (Sus scrofa ) [TaxId: 9823 ],	SCOPe (2.08)
E [auth Y]	d1hia.2	All beta proteins	Trypsin-like serine proteases	Trypsin-like serine proteases	Eukaryotic proteases	Kallikrein A	pig (Sus scrofa ) [TaxId: 9823 ],	SCOPe (2.08)
C [auth I]	d1hiai_	Small proteins	Knottins (small inhibitors, toxins, lectins)	Leech antihemostatic proteins	Huristasin-like	Hirustasin	medicinal leech (Hirudo medicinalis ) [TaxId: 6421 ],	SCOPe (2.08)
F [auth J]	d1hiaj_	Small proteins	Knottins (small inhibitors, toxins, lectins)	Leech antihemostatic proteins	Huristasin-like	Hirustasin	medicinal leech (Hirudo medicinalis ) [TaxId: 6421 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
C [auth I]	SCOP2B Superfamily	Leech antihemostatic proteins	8038375	3000489	SCOP2B (2022-06-29)
F [auth J]	SCOP2B Superfamily	Leech antihemostatic proteins	8038375	3000489	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)
C [auth I]	PF02822	e1hiaI1	A: few secondary structure elements	X: Huristasin-like (From Topology)	H: Huristasin-like (From Topology)	T: Huristasin-like	F: PF02822	ECOD (1.6)
F [auth J]	PF02822	e1hiaJ1	A: few secondary structure elements	X: Huristasin-like (From Topology)	H: Huristasin-like (From Topology)	T: Huristasin-like	F: PF02822	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)
D [auth X]	2.40.10.10	Mainly Beta	Beta Barrel	Thrombin, subunit H	Trypsin-like serine proteases	CATH (4.3.0)
B	2.40.10.10	Mainly Beta	Beta Barrel	Thrombin, subunit H	Trypsin-like serine proteases	CATH (4.3.0)
E [auth Y]	2.40.10.10	Mainly Beta	Beta Barrel	Thrombin, subunit H	Trypsin-like serine proteases	CATH (4.3.0)
C [auth I]	2.10.22.10	Mainly Beta	Ribbon	Antistasin	domain 1	CATH (4.3.0)
F [auth J]	2.10.22.10	Mainly Beta	Ribbon	Antistasin	domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, D [auth X]	PF00089	Trypsin (Trypsin)	Trypsin	-	Domain
B, E [auth Y]	PF00089	Trypsin (Trypsin)	Trypsin	-	Domain
C [auth I], F [auth J]	PF02822	Antistasin family (Antistasin)	Antistasin family	Members of this family are inhibitors of trypsin family proteases. This domain is highly disulphide bonded. The domain is also found in some large extracellular proteins in multiple copies.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, D [auth X]	KALLIKREIN	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	zymogen activation organonitrogen compound metabolic process cellular biosynthetic process cellular metabolic process primary metabolic process gene expression macromolecule biosynthetic process protein maturation organic substance metabolic process biosynthetic process proteolysis organic substance biosynthetic process protein processing metabolic process zymogen activation organonitrogen compound metabolic process cellular biosynthetic process cellular metabolic process primary metabolic process gene expression macromolecule biosynthetic process protein maturation organic substance metabolic process biosynthetic process proteolysis organic substance biosynthetic process protein processing metabolic process cellular process protein metabolic process macromolecule metabolic process multicellular organismal process system process regulation of systemic arterial blood pressure circulatory system process regulation of blood pressure biological regulation regulation of biological quality blood circulation	membrane-bounded organelle intracellular anatomical structure intracellular vesicle cellular anatomical entity intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle secretory granule secretory vesicle cytoplasm vesicle
B, E [auth Y]	KALLIKREIN	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	zymogen activation organonitrogen compound metabolic process cellular biosynthetic process cellular metabolic process primary metabolic process gene expression macromolecule biosynthetic process protein maturation organic substance metabolic process biosynthetic process proteolysis organic substance biosynthetic process protein processing metabolic process zymogen activation organonitrogen compound metabolic process cellular biosynthetic process cellular metabolic process primary metabolic process gene expression macromolecule biosynthetic process protein maturation organic substance metabolic process biosynthetic process proteolysis organic substance biosynthetic process protein processing metabolic process cellular process protein metabolic process macromolecule metabolic process multicellular organismal process system process regulation of systemic arterial blood pressure circulatory system process regulation of blood pressure biological regulation regulation of biological quality blood circulation	membrane-bounded organelle intracellular anatomical structure intracellular vesicle cellular anatomical entity intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle secretory granule secretory vesicle cytoplasm vesicle
C [auth I], F [auth J]	HIRUSTASIN	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 heparin binding glycosaminoglycan binding binding carbohydrate derivative binding sulfur compound binding	multicellular organismal process regulation of biological process negative regulation of coagulation biological regulation negative regulation of biological process coagulation regulation of multicellular organismal process negative regulation of multicellular organismal process regulation of coagulation	extracellular region cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, D [auth X]	IPR001254	Serine proteases, trypsin domain	Domain
A, D [auth X]	IPR009003	Peptidase S1, PA clan	Homologous Superfamily
A, D [auth X]	IPR043504	Peptidase S1, PA clan, chymotrypsin-like fold	Homologous Superfamily
A, D [auth X]	IPR018114	Serine proteases, trypsin family, histidine active site	Active Site
A, D [auth X]	IPR001314	Peptidase S1A, chymotrypsin family	Family
A, D [auth X]	IPR033116	Serine proteases, trypsin family, serine active site	Active Site
B, E [auth Y]	IPR001254	Serine proteases, trypsin domain	Domain
B, E [auth Y]	IPR009003	Peptidase S1, PA clan	Homologous Superfamily
B, E [auth Y]	IPR043504	Peptidase S1, PA clan, chymotrypsin-like fold	Homologous Superfamily
B, E [auth Y]	IPR018114	Serine proteases, trypsin family, histidine active site	Active Site
B, E [auth Y]	IPR001314	Peptidase S1A, chymotrypsin family	Family
B, E [auth Y]	IPR033116	Serine proteases, trypsin family, serine active site	Active Site
C [auth I], F [auth J]	IPR004094	Antistasin-like domain	Domain
C [auth I], F [auth J]	IPR008086	Proteinase inhibitor I15, leech antistasin	Family
C [auth I], F [auth J]	IPR011061	Hirudin/antistatin	Homologous Superfamily

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.