Annotations: 4Y40

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Serpins	8070165	3001563	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Serpins	8070165	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)
A	PF00079	e4y40A1	A: a+b complex topology	X: Serpins (From Topology)	H: Serpins (From Topology)	T: Serpins	F: PF00079	ECOD (1.6)
B	PF00079	e4y40B1	A: a+b complex topology	X: Serpins (From Topology)	H: Serpins (From Topology)	T: Serpins	F: PF00079	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)
B	3.30.497.10	Alpha Beta	2-Layer Sandwich	Antithrombin	Chain I, domain 2	CATH (4.3.0)
B	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, B	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, B	Serpin A12	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	cellular response to stimulus cellular response to nitrogen compound positive regulation of cell communication response to organic substance regulation of cellular process positive regulation of signal transduction response to stimulus transmembrane receptor protein tyrosine kinase signaling pathway regulation of signal transduction insulin receptor signaling pathway cell communication response to hormone cellular response to peptide signal transduction cellular response to stimulus cellular response to nitrogen compound positive regulation of cell communication response to organic substance regulation of cellular process positive regulation of signal transduction response to stimulus transmembrane receptor protein tyrosine kinase signaling pathway regulation of signal transduction insulin receptor signaling pathway cell communication response to hormone cellular response to peptide signal transduction cellular response to hormone stimulus positive regulation of cellular response to insulin stimulus regulation of biological process response to organonitrogen compound regulation of insulin receptor signaling pathway response to nitrogen compound cellular response to oxygen-containing compound cellular response to organonitrogen compound regulation of response to stimulus response to chemical response to insulin signaling response to peptide hormone positive regulation of biological process regulation of cellular response to insulin stimulus positive regulation of response to stimulus cellular response to endogenous stimulus cellular response to organic substance enzyme-linked receptor protein signaling pathway positive regulation of cellular process regulation of signaling cell surface receptor signaling pathway response to endogenous stimulus positive regulation of insulin receptor signaling pathway biological regulation response to oxygen-containing compound cellular response to peptide hormone stimulus response to peptide cellular response to chemical stimulus regulation of cell communication cellular process cellular response to insulin stimulus positive regulation of signaling regulation of biosynthetic process regulation of lipid metabolic process negative regulation of metabolic process negative regulation of biological process lipid biosynthetic process primary metabolic process negative regulation of lipid biosynthetic process regulation of primary metabolic process organic substance metabolic process biosynthetic process negative regulation of biosynthetic process organic substance biosynthetic process metabolic process regulation of lipid biosynthetic process regulation of metabolic process negative regulation of lipid metabolic process lipid metabolic process intracellular signal transduction intracellular signaling cassette phosphatidylinositol 3-kinase/protein kinase B signal transduction monosaccharide metabolic process carbohydrate metabolic process small molecule biosynthetic process carbohydrate biosynthetic process hexose metabolic process monosaccharide biosynthetic process gluconeogenesis hexose biosynthetic process small molecule metabolic process glucose metabolic process negative regulation of small molecule metabolic process cellular biosynthetic process negative regulation of cellular metabolic process negative regulation of gluconeogenesis regulation of small molecule metabolic process negative regulation of cellular process regulation of carbohydrate metabolic process regulation of glucose metabolic process negative regulation of carbohydrate metabolic process cellular metabolic process regulation of cellular metabolic process negative regulation of cellular biosynthetic process regulation of cellular biosynthetic process regulation of gluconeogenesis regulation of carbohydrate biosynthetic process neutral lipid metabolic process regulation of triglyceride metabolic process triglyceride metabolic process cellular lipid metabolic process glycerolipid metabolic process acylglycerol metabolic process regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction regulation of intracellular signal transduction positive regulation of intracellular signal transduction positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction regulation of cholesterol metabolic process organic hydroxy compound metabolic process sterol metabolic process steroid metabolic process regulation of steroid metabolic process cholesterol metabolic process alcohol metabolic process organic cyclic compound metabolic process secondary alcohol metabolic process	cell periphery plasma membrane membrane cellular anatomical entity extracellular region extracellular space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR000215	Serpin family	Family
A, B	IPR023796	Serpin domain	Domain
A, B	IPR042178	Serpin superfamily, domain 1	Homologous Superfamily
A, B	IPR042185	Serpin superfamily, domain 2	Homologous Superfamily
A, B	IPR036186	Serpin superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: Q8IW75	atopic eczema autoimmune disease psoriasis

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.