Annotations: 1PE3

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A [auth 1]	d1pe31_	Small proteins	Trefoil/Plexin domain-like	Trefoil	Trefoil	Intestinal trefoil factor	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B [auth 2]	d1pe32_	Small proteins	Trefoil/Plexin domain-like	Trefoil	Trefoil	Intestinal trefoil factor	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 [auth 1]	SCOP2B Superfamily	Trefoil	8038743	3000849	SCOP2B (2022-06-29)
B [auth 2]	SCOP2B Superfamily	Trefoil	8038743	3000849	SCOP2B (2022-06-29)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A [auth 1]	4.10.110.10	Few Secondary Structures	Irregular	Spasmolytic Protein	domain 1	CATH (4.3.0)
B [auth 2]	4.10.110.10	Few Secondary Structures	Irregular	Spasmolytic Protein	domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth 1], B [auth 2]	PF00088	Trefoil (P-type) domain (Trefoil)	Trefoil (P-type) domain	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth 1], B [auth 2]	Trefoil factor 3	identical protein binding protein binding binding	multicellular organismal process maintenance of gastrointestinal epithelium system process digestion multicellular organismal-level homeostasis epithelial structure maintenance homeostatic process digestive system process anatomical structure homeostasis tissue homeostasis monosaccharide metabolic process carbohydrate metabolic process regulation of biological process biological regulation multicellular organismal process maintenance of gastrointestinal epithelium system process digestion multicellular organismal-level homeostasis epithelial structure maintenance homeostatic process digestive system process anatomical structure homeostasis tissue homeostasis monosaccharide metabolic process carbohydrate metabolic process regulation of biological process biological regulation primary metabolic process hexose metabolic process regulation of primary metabolic process organic substance metabolic process regulation of small molecule metabolic process metabolic process small molecule metabolic process regulation of carbohydrate metabolic process regulation of glucose metabolic process regulation of metabolic process glucose metabolic process	membrane-bounded organelle intracellular anatomical structure intracellular vesicle cellular anatomical entity intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle secretory granule secretory vesicle cytoplasm vesicle extracellular region membrane-bounded organelle intracellular anatomical structure intracellular vesicle cellular anatomical entity intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle secretory granule secretory vesicle cytoplasm vesicle extracellular region extracellular space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth 1], B [auth 2]	IPR044913	P-type trefoil domain superfamily	Homologous Superfamily
A [auth 1], B [auth 2]	IPR017994	P-type trefoil, chordata	Family
A [auth 1], B [auth 2]	IPR017957	P-type trefoil, conserved site	Conserved Site
A [auth 1], B [auth 2]	IPR000519	P-type trefoil domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A [auth 1], B [auth 2]	Pharos: Q07654	kidney disease pancreatic intraductal papillary-mucinous neoplasm acute kidney failure asthma gastrointestinal mucositis Inflammatory disease of mucous membrane malignant pancreatic neoplasm osteosarcoma breast cancer invasive ductal breast carcinoma lung adenocarcinoma MALT lymphoma pancreatic intraductal papillary-mucinous carcinoma exocrine pancreatic carcinoma hepatitis, non-human animal kidney disease pancreatic intraductal papillary-mucinous neoplasm acute kidney failure asthma gastrointestinal mucositis Inflammatory disease of mucous membrane malignant pancreatic neoplasm osteosarcoma breast cancer invasive ductal breast carcinoma lung adenocarcinoma MALT lymphoma pancreatic intraductal papillary-mucinous carcinoma exocrine pancreatic carcinoma hepatitis, non-human animal lung carcinoma nasopharyngeal carcinoma

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 R01GM133198.