Annotations: 1KIG

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A [auth H]	d1kigh_	All beta proteins	Trypsin-like serine proteases	Trypsin-like serine proteases	Eukaryotic proteases	Coagulation factor Xa, protease domain	cattle (Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
B [auth L]	d1kigl_	Small proteins	Knottins (small inhibitors, toxins, lectins)	EGF/Laminin	EGF-type module	Factor X, N-terminal module	cattle (Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
C [auth I]	d1kigi_	Small proteins	BPTI-like	BPTI-like	Soft tick anticoagulant proteins	Anticoagulant protein, factor Xa inhibitor	(Ornithodoros moubata ) [TaxId: 6938 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A [auth H]	SCOP2 Family	Eukaryotic proteases	8029875	4000286	SCOP2 (2022-06-29)
A [auth H]	SCOP2 Superfamily	Trypsin-like serine proteases	8042254	3000114	SCOP2 (2022-06-29)
B [auth L]	SCOP2 Family	EGF-type module	8025913	4003198	SCOP2 (2022-06-29)
B [auth L]	SCOP2 Superfamily	EGF/Laminin-like	8038292	3000412	SCOP2 (2022-06-29)
C [auth I]	SCOP2B Superfamily	BPTI-like	8038583	3000628	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 [auth H]	Trypsin	e1kigH1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel 2	F: Trypsin	ECOD (1.6)
B [auth L]	FXa_inhibition	e1kigL1	A: few secondary structure elements	X: EGF-like	H: EGF-related	T: EGF/Laminin	F: FXa_inhibition	ECOD (1.6)
C [auth I]	UNK_F_TYPE	e1kigI1	A: few secondary structure elements	X: BPTI-like (From Topology)	H: BPTI-like (From Topology)	T: BPTI-like	F: UNK_F_TYPE	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A [auth H]	2.40.10.10	Mainly Beta	Beta Barrel	Thrombin, subunit H	Trypsin-like serine proteases	CATH (4.3.0)
B [auth L]	2.10.25.10	Mainly Beta	Ribbon	Laminin	Laminin	CATH (4.3.0)
C [auth I]	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 [auth H]	PF00089	Trypsin (Trypsin)	Trypsin	-	Domain
B [auth L]	PF14670	Coagulation Factor Xa inhibitory site (FXa_inhibition)	Coagulation Factor Xa inhibitory site	This short domain on coagulation enzyme factor Xa is found to be the target for a potent inhibitor of coagulation, TAK-442 [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth H]	FACTOR XA	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	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 proteolysis metabolic process 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 proteolysis metabolic process cellular process primary metabolic process protein metabolic process macromolecule metabolic process	cellular anatomical structure extracellular region extracellular space
B [auth L]	FACTOR XA	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	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 proteolysis metabolic process 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 proteolysis metabolic process cellular process primary metabolic process protein metabolic process macromolecule metabolic process	cellular anatomical structure extracellular region extracellular space
C [auth I]	ANTICOAGULANT PEPTIDE	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	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 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 biological regulation 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	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth H]	IPR050442	Peptidase S1 family, coagulation factors	Family
A [auth H]	IPR009003	Peptidase S1, PA clan	Homologous Superfamily
A [auth H]	IPR000294	Gamma-carboxyglutamic acid-rich (GLA) domain	Domain
A [auth H]	IPR017857	Coagulation factor-like, Gla domain superfamily	Homologous Superfamily
A [auth H]	IPR018097	EGF-like calcium-binding, conserved site	Conserved Site
A [auth H]	IPR001314	Peptidase S1A, chymotrypsin family	Family
A [auth H]	IPR033116	Serine proteases, trypsin family, serine active site	Active Site
A [auth H]	IPR001254	Serine proteases, trypsin domain	Domain
A [auth H]	IPR035972	Gamma-carboxyglutamic acid-rich (GLA) domain superfamily	Homologous Superfamily
A [auth H]	IPR001881	EGF-like calcium-binding domain	Domain
A [auth H]	IPR000742	EGF-like domain	Domain
A [auth H]	IPR043504	Peptidase S1, PA clan, chymotrypsin-like fold	Homologous Superfamily
A [auth H]	IPR000152	EGF-type aspartate/asparagine hydroxylation site	PTM
A [auth H]	IPR018114	Serine proteases, trypsin family, histidine active site	Active Site
A [auth H]	IPR012224	Peptidase S1A, coagulation factor VII/IX/X/C/Z	Family
B [auth L]	IPR050442	Peptidase S1 family, coagulation factors	Family
B [auth L]	IPR009003	Peptidase S1, PA clan	Homologous Superfamily
B [auth L]	IPR000294	Gamma-carboxyglutamic acid-rich (GLA) domain	Domain
B [auth L]	IPR017857	Coagulation factor-like, Gla domain superfamily	Homologous Superfamily
B [auth L]	IPR018097	EGF-like calcium-binding, conserved site	Conserved Site
B [auth L]	IPR001314	Peptidase S1A, chymotrypsin family	Family
B [auth L]	IPR033116	Serine proteases, trypsin family, serine active site	Active Site
B [auth L]	IPR001254	Serine proteases, trypsin domain	Domain
B [auth L]	IPR035972	Gamma-carboxyglutamic acid-rich (GLA) domain superfamily	Homologous Superfamily
B [auth L]	IPR001881	EGF-like calcium-binding domain	Domain
B [auth L]	IPR000742	EGF-like domain	Domain
B [auth L]	IPR043504	Peptidase S1, PA clan, chymotrypsin-like fold	Homologous Superfamily
B [auth L]	IPR000152	EGF-type aspartate/asparagine hydroxylation site	PTM
B [auth L]	IPR018114	Serine proteases, trypsin family, histidine active site	Active Site
B [auth L]	IPR012224	Peptidase S1A, coagulation factor VII/IX/X/C/Z	Family
C [auth I]	IPR036880	Pancreatic trypsin inhibitor Kunitz domain superfamily	Homologous Superfamily