Annotations: 2R9Y

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Serpins	8070166	4002658	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Serpins	8070167	3001563	SCOP2 (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	Serpin	e2r9yA1	A: a+b complex topology	X: Serpins (From Topology)	H: Serpins (From Topology)	T: Serpins	F: Serpin	ECOD (1.6)

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
A	Alpha-2-antiplasmin	protein binding binding enzyme binding protease binding enzyme regulator activity molecular function inhibitor activity peptidase regulator activity molecular function regulator activity enzyme inhibitor activity peptidase inhibitor activity endopeptidase regulator activity endopeptidase inhibitor activity serine-type endopeptidase inhibitor activity identical protein binding protein binding binding enzyme binding protease binding enzyme regulator activity molecular function inhibitor activity peptidase regulator activity molecular function regulator activity enzyme inhibitor activity peptidase inhibitor activity endopeptidase regulator activity endopeptidase inhibitor activity serine-type endopeptidase inhibitor activity identical protein binding protein homodimerization activity protein dimerization activity	regulation of transforming growth factor beta production multicellular organismal process regulation of cellular process cellular biosynthetic process positive regulation of biological process positive regulation of cellular metabolic process positive regulation of macromolecule biosynthetic process positive regulation of metabolic process organic substance metabolic process positive regulation of biosynthetic process regulation of cytokine production organic substance biosynthetic process cytokine production regulation of multicellular organismal process regulation of transforming growth factor beta production multicellular organismal process regulation of cellular process cellular biosynthetic process positive regulation of biological process positive regulation of cellular metabolic process positive regulation of macromolecule biosynthetic process positive regulation of metabolic process organic substance metabolic process positive regulation of biosynthetic process regulation of cytokine production organic substance biosynthetic process cytokine production regulation of multicellular organismal process positive regulation of macromolecule metabolic process transforming growth factor beta production positive regulation of cellular process regulation of biosynthetic process regulation of biological process cellular metabolic process biological regulation regulation of cellular metabolic process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of cellular biosynthetic process regulation of gene expression biosynthetic process positive regulation of gene expression positive regulation of multicellular organismal process regulation of macromolecule biosynthetic process metabolic process cellular process macromolecule metabolic process positive regulation of transforming growth factor beta production positive regulation of cytokine production regulation of metabolic process positive regulation of cellular biosynthetic process cellular response to stimulus positive regulation of cell communication positive regulation of signal transduction response to stimulus signaling regulation of signal transduction intracellular signal transduction cell communication positive regulation of response to stimulus positive regulation of ERK1 and ERK2 cascade regulation of intracellular signal transduction intracellular signaling cassette signal transduction regulation of signaling positive regulation of MAPK cascade positive regulation of intracellular signal transduction regulation of MAPK cascade regulation of response to stimulus MAPK cascade regulation of cell communication ERK1 and ERK2 cascade regulation of ERK1 and ERK2 cascade positive regulation of signaling developmental process regulation of developmental process cellular developmental process regulation of cell differentiation positive regulation of developmental process positive regulation of cell differentiation cell differentiation cellular component organization collagen fibril organization extracellular matrix organization cellular component organization or biogenesis supramolecular fiber organization extracellular structure organization external encapsulating structure organization positive regulation of JNK cascade JNK cascade regulation of JNK cascade regulation of body fluid levels positive regulation of coagulation regulation of response to external stimulus negative regulation of biological process positive regulation of blood coagulation regulation of response to wounding regulation of coagulation positive regulation of response to external stimulus response to stress regulation of response to stress coagulation positive regulation of hemostasis regulation of biological quality response to wounding regulation of hemostasis positive regulation of response to wounding wound healing negative regulation of response to stimulus regulation of blood coagulation negative regulation of wound healing hemostasis negative regulation of blood coagulation response to external stimulus negative regulation of response to wounding blood coagulation negative regulation of hemostasis positive regulation of wound healing fibrinolysis regulation of fibrinolysis negative regulation of coagulation negative regulation of response to external stimulus regulation of wound healing negative regulation of multicellular organismal process negative regulation of fibrinolysis acute-phase response defense response inflammatory response acute inflammatory response regulation of systemic arterial blood pressure by renin-angiotensin regulation of tube diameter regulation of systemic arterial blood pressure by hormone maintenance of blood vessel diameter homeostasis by renin-angiotensin regulation of systemic arterial blood pressure mediated by a chemical signal system process renal system process regulation of blood pressure regulation of tube size renal control of peripheral vascular resistance involved in regulation of systemic arterial blood pressure regulation of systemic arterial blood pressure circulatory system process endocrine process vascular process in circulatory system renal system process involved in regulation of systemic arterial blood pressure blood vessel diameter maintenance blood circulation regulation of anatomical structure size regulation of protein maturation negative regulation of plasminogen activation negative regulation of proteolysis negative regulation of cellular metabolic process protein maturation regulation of primary metabolic process regulation of proteolysis proteolysis plasminogen activation negative regulation of protein metabolic process zymogen activation regulation of protein metabolic process negative regulation of metabolic process primary metabolic process negative regulation of cellular biosynthetic process negative regulation of gene expression negative regulation of macromolecule biosynthetic process regulation of protein processing protein processing negative regulation of protein maturation negative regulation of cellular process regulation of plasminogen activation protein metabolic process negative regulation of macromolecule metabolic process organonitrogen compound metabolic process negative regulation of biosynthetic process negative regulation of protein processing cell population proliferation regulation of smooth muscle cell proliferation positive regulation of cell population proliferation smooth muscle cell proliferation positive regulation of smooth muscle cell proliferation regulation of cell population proliferation muscle cell proliferation collagen biosynthetic process regulation of collagen biosynthetic process regulation of collagen metabolic process positive regulation of collagen metabolic process positive regulation of collagen biosynthetic process collagen metabolic process nucleobase-containing compound metabolic process DNA-templated transcription regulation of RNA metabolic process transcription by RNA polymerase II regulation of nucleobase-containing compound metabolic process regulation of transcription by RNA polymerase II positive regulation of nucleobase-containing compound metabolic process positive regulation of transcription by RNA polymerase II positive regulation of RNA metabolic process organic cyclic compound metabolic process organic cyclic compound biosynthetic process regulation of DNA-templated transcription positive regulation of DNA-templated transcription RNA metabolic process RNA biosynthetic process nucleic acid biosynthetic process regulation of RNA biosynthetic process nucleobase-containing compound biosynthetic process nucleic acid metabolic process positive regulation of RNA biosynthetic process blood vessel morphogenesis tube development vasculature development circulatory system development multicellular organism development anatomical structure morphogenesis tube morphogenesis anatomical structure development blood vessel development system development positive regulation of organelle organization regulation of cytoskeleton organization regulation of cellular component organization regulation of actin filament-based process positive regulation of cellular component organization regulation of actin filament bundle assembly cellular component biogenesis cellular component assembly positive regulation of actin filament bundle assembly actin filament bundle organization positive regulation of stress fiber assembly actin filament-based process stress fiber assembly regulation of actin filament organization actin cytoskeleton organization actomyosin structure organization positive regulation of cellular component biogenesis positive regulation of cytoskeleton organization actin filament organization regulation of cellular component biogenesis positive regulation of supramolecular fiber organization regulation of organelle organization regulation of stress fiber assembly organelle organization contractile actin filament bundle assembly regulation of actomyosin structure organization actin filament bundle assembly regulation of actin cytoskeleton organization regulation of supramolecular fiber organization cytoskeleton organization	protein-containing complex extracellular region extracellular space cellular anatomical entity fibrinogen complex cell periphery extracellular matrix external encapsulating structure collagen-containing extracellular matrix cell surface

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR023795	Serpin, conserved site	Conserved Site
A	IPR033833	Alpha2-antiplasmin, serpin domain	Domain
A	IPR000215	Serpin family	Family
A	IPR036186	Serpin superfamily	Homologous Superfamily
A	IPR023796	Serpin domain	Domain
A	IPR042178	Serpin superfamily, domain 1	Homologous Superfamily
A	IPR042185	Serpin superfamily, domain 2	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.