1XU8

The 2.8 A structure of a tumour suppressing serpin

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
Pharos: Disease Associations

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1xu8a1	Multi-domain proteins (alpha and beta)	Serpins	Serpins	Serpins	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d1xu8a2	Artifacts	Tags	Tags	Tags	N-terminal Tags	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d1xu8b1	Multi-domain proteins (alpha and beta)	Serpins	Serpins	Serpins	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d1xu8b2	Artifacts	Tags	Tags	Tags	N-terminal Tags	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Serpins	8044125	3001563	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Serpins	8044125	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	Serpin	e1xu8A1	A: a+b complex topology	X: Serpins (From Topology)	H: Serpins (From Topology)	T: Serpins	F: Serpin	ECOD (1.6)
B	Serpin	e1xu8B1	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)
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	Maspin	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	regulation of biological process cell population proliferation regulation of cellular process regulation of cell population proliferation biological regulation cellular process regulation of epithelial cell proliferation epithelial cell proliferation developmental process tissue morphogenesis anatomical structure morphogenesis epithelium development anatomical structure development morphogenesis of an epithelium regulation of biological process cell population proliferation regulation of cellular process regulation of cell population proliferation biological regulation cellular process regulation of epithelial cell proliferation epithelial cell proliferation developmental process tissue morphogenesis anatomical structure morphogenesis epithelium development anatomical structure development morphogenesis of an epithelium tissue development multicellular organismal process reproductive system development prostate gland development reproductive process gland development animal organ development urogenital system development developmental process involved in reproduction prostate gland morphogenesis multicellular organism development gland morphogenesis reproductive structure development animal organ morphogenesis system development cellular component organization extracellular matrix organization cellular component organization or biogenesis extracellular structure organization external encapsulating structure organization	cell periphery cellular anatomical structure plasma membrane membrane cornified envelope sarcoplasm intracellular anatomical structure cytoplasm extracellular region extracellular space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR023795	Serpin, conserved site	Conserved Site
A, B	IPR000215	Serpin family	Family
A, B	IPR033836	Maspin, serpin domain	Domain
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
A, B	IPR000240	Serpin B9/maspin	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: P36952	malignant colon neoplasm breast carcinoma keloid Neoplasm Metastasis breast cancer colorectal cancer invasive ductal breast carcinoma ovarian cancer pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia benign colon neoplasm colonic neoplasm pancreatic intraductal papillary-mucinous carcinoma spina bifida interstitial cystitis lung adenocarcinoma malignant colon neoplasm breast carcinoma keloid Neoplasm Metastasis breast cancer colorectal cancer invasive ductal breast carcinoma ovarian cancer pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia benign colon neoplasm colonic neoplasm pancreatic intraductal papillary-mucinous carcinoma spina bifida interstitial cystitis lung adenocarcinoma non-small cell lung carcinoma pancreatic intraductal papillary-mucinous neoplasm ulcerative colitis colorectal carcinoma lung cancer malignant pancreatic neoplasm

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), 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 R01GM157729.