Annotations: 2A1D

Staphylocoagulase bound to bovine thrombin

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
F [auth H]	Sigma_1_2	e2a1dH1	A: alpha arrays	X: HTH	H: Nudix	T: winged helix domain	F: Sigma_1_2	ECOD (v295)
C [auth D]	Sigma_1_2	e2a1dD1	A: alpha arrays	X: Globin-like	H: Globin-like	T: Globin-like	F: Sigma_1_2	ECOD (v295)
E [auth F]	Flu_M2	e2a1dF1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: Flu_M2	ECOD (v295)
B	Flu_M2	e2a1dB1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: Flu_M2	ECOD (v295)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
F [auth H]	1.20.120.750	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Staphylcoagulase, helix bundle domain 1	CATH (4.3.0)
F [auth H]	1.20.120.760	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Staphylcoagulase, helix bundle, domain 2	CATH (4.3.0)
C [auth D]	1.20.120.750	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Staphylcoagulase, helix bundle domain 1	CATH (4.3.0)
C [auth D]	1.20.120.760	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Staphylcoagulase, helix bundle, domain 2	CATH (4.3.0)
E [auth F]	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)
D [auth E]	4.10.140.10	Few Secondary Structures	Irregular	Epsilon-Thrombin	Chain L	CATH (4.3.0)
A	4.10.140.10	Few Secondary Structures	Irregular	Epsilon-Thrombin	Chain L	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B, E [auth F]	PF00089	Trypsin (Trypsin)	Trypsin		Domain
A, D [auth E]	PF09396	Thrombin light chain (Thrombin_light)	Thrombin light chain	Thrombin is an enzyme that cleaves bonds after Arg and Lys, converts fibrinogen to fibrin and activates factors V, VII, VIII. Prothrombin is activated on the surface of a phospholipid membrane where factor Xa removes the activation peptide and cleave ...	Thrombin is an enzyme that cleaves bonds after Arg and Lys, converts fibrinogen to fibrin and activates factors V, VII, VIII. Prothrombin is activated on the surface of a phospholipid membrane where factor Xa removes the activation peptide and cleaves the remaining part into light and heavy chains. This domain corresponds to the light chain of thrombin.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C [auth D], F [auth H]	Staphylocoagulase	enzyme regulator activity enzyme activator activity peptidase regulator activity molecular function activator activity molecular function regulator activity peptidase activator activity	-	-
B, E [auth F]	thrombin	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 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 protein-containing complex binding fibrinogen binding	cellular component organization cellular component biogenesis protein polymerization cellular component assembly protein-containing complex organization protein-containing complex assembly cellular process cellular component organization or biogenesis multicellular organismal process regulation of body fluid levels wound healing response to stimulus cell activation hemostasis cellular component organization cellular component biogenesis protein polymerization cellular component assembly protein-containing complex organization protein-containing complex assembly cellular process cellular component organization or biogenesis multicellular organismal process regulation of body fluid levels wound healing response to stimulus cell activation hemostasis biological regulation blood coagulation response to stress coagulation regulation of biological quality response to wounding platelet activation acute-phase response defense response inflammatory response acute inflammatory response positive regulation of coagulation regulation of response to external stimulus positive regulation of biological process positive regulation of blood coagulation regulation of response to wounding regulation of coagulation positive regulation of response to stimulus regulation of response to stress regulation of multicellular organismal process positive regulation of hemostasis regulation of hemostasis positive regulation of response to wounding regulation of biological process regulation of blood coagulation response to external stimulus positive regulation of wound healing regulation of response to stimulus regulation of wound healing positive regulation of multicellular organismal process proteolysis metabolic process primary metabolic process protein metabolic process macromolecule metabolic process	extracellular matrix cellular anatomical structure external encapsulating structure extracellular region
A, D [auth E]	thrombin	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 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 protein-containing complex binding fibrinogen binding	cellular component organization cellular component biogenesis protein polymerization cellular component assembly protein-containing complex organization protein-containing complex assembly cellular process cellular component organization or biogenesis multicellular organismal process regulation of body fluid levels wound healing response to stimulus cell activation hemostasis cellular component organization cellular component biogenesis protein polymerization cellular component assembly protein-containing complex organization protein-containing complex assembly cellular process cellular component organization or biogenesis multicellular organismal process regulation of body fluid levels wound healing response to stimulus cell activation hemostasis biological regulation blood coagulation response to stress coagulation regulation of biological quality response to wounding platelet activation acute-phase response defense response inflammatory response acute inflammatory response positive regulation of coagulation regulation of response to external stimulus positive regulation of biological process positive regulation of blood coagulation regulation of response to wounding regulation of coagulation positive regulation of response to stimulus regulation of response to stress regulation of multicellular organismal process positive regulation of hemostasis regulation of hemostasis positive regulation of response to wounding regulation of biological process regulation of blood coagulation response to external stimulus positive regulation of wound healing regulation of response to stimulus regulation of wound healing positive regulation of multicellular organismal process proteolysis metabolic process primary metabolic process protein metabolic process macromolecule metabolic process	extracellular matrix cellular anatomical structure external encapsulating structure extracellular region

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C [auth D], F [auth H]	IPR014874	Staphylocoagulase, N-terminal, subdomain 1	Domain
C [auth D], F [auth H]	IPR043071	Staphylcoagulase, N-terminal, subdomain 2	Homologous Superfamily
C [auth D], F [auth H]	IPR001443	Staphylocoagulase repeat	Repeat
C [auth D], F [auth H]	IPR043072	Staphylcoagulase, N-terminal, subdomain 1	Homologous Superfamily
B, E [auth F]	IPR018992	Thrombin light chain	Domain
B, E [auth F]	IPR000294	Gamma-carboxyglutamic acid-rich (GLA) domain	Domain
B, E [auth F]	IPR037111	Thrombin light chain domain superfamily	Homologous Superfamily
B, E [auth F]	IPR051659	Serine Protease S1 Domain-Containing Protein	Family
B, E [auth F]	IPR003966	Prothrombin/thrombin	Family
B, E [auth F]	IPR018056	Kringle, conserved site	Conserved Site
B, E [auth F]	IPR018114	Serine protease-like, trypsin family, histidine active site	Active Site
B, E [auth F]	IPR043504	Peptidase_S1_PA_chymotrypsin	Unknown
B, E [auth F]	IPR013806	Kringle-like fold	Homologous Superfamily
B, E [auth F]	IPR038178	Kringle superfamily	Homologous Superfamily
B, E [auth F]	IPR009003	Peptidase S1, PA clan	Homologous Superfamily
B, E [auth F]	IPR001314	Peptidase S1A, chymotrypsin family	Family
B, E [auth F]	IPR033116	Serine proteases, trypsin family, serine active site	Active Site
B, E [auth F]	IPR001254	Serine proteases, trypsin domain	Domain
B, E [auth F]	IPR035972	Gamma-carboxyglutamic acid-rich (GLA) domain superfamily	Homologous Superfamily
B, E [auth F]	IPR000001	Kringle	Domain
A, D [auth E]	IPR018992	Thrombin light chain	Domain
A, D [auth E]	IPR000294	Gamma-carboxyglutamic acid-rich (GLA) domain	Domain
A, D [auth E]	IPR037111	Thrombin light chain domain superfamily	Homologous Superfamily
A, D [auth E]	IPR051659	Serine Protease S1 Domain-Containing Protein	Family
A, D [auth E]	IPR003966	Prothrombin/thrombin	Family
A, D [auth E]	IPR018056	Kringle, conserved site	Conserved Site
A, D [auth E]	IPR018114	Serine protease-like, trypsin family, histidine active site	Active Site
A, D [auth E]	IPR043504	Peptidase_S1_PA_chymotrypsin	Unknown
A, D [auth E]	IPR013806	Kringle-like fold	Homologous Superfamily
A, D [auth E]	IPR038178	Kringle superfamily	Homologous Superfamily
A, D [auth E]	IPR009003	Peptidase S1, PA clan	Homologous Superfamily
A, D [auth E]	IPR001314	Peptidase S1A, chymotrypsin family	Family
A, D [auth E]	IPR033116	Serine proteases, trypsin family, serine active site	Active Site
A, D [auth E]	IPR001254	Serine proteases, trypsin domain	Domain
A, D [auth E]	IPR035972	Gamma-carboxyglutamic acid-rich (GLA) domain superfamily	Homologous Superfamily
A, D [auth E]	IPR000001	Kringle	Domain