1CE3

PUTATIVE ANCESTRAL PROTEIN ENCODED BY A SINGLE SEQUENCE REPEAT OF THE MULTIDOMAIN PROTEINASE INHIBITOR FROM NICOTIANA ALATA

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

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1ce3a_	Small proteins	Plant proteinase inhibitors	Plant proteinase inhibitors	Plant proteinase inhibitors	Multidomain proteinase inhibitor	Persian tobacco (Nicotiana alata ) [TaxId: 4087 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Plant proteinase inhibitors	8026337	4003423	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Plant proteinase inhibitors	8038716	3000611	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	PF02428	e1ce3A2	A: few secondary structure elements	X: Plant proteinase inhibitors (From Topology)	H: Plant proteinase inhibitors (From Topology)	T: Plant proteinase inhibitors	F: PF02428	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.60.30	Alpha Beta	2-Layer Sandwich	Wheat Germ Agglutinin (Isolectin 2)	domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF02428	Potato type II proteinase inhibitor family (Prot_inhib_II)	Potato type II proteinase inhibitor family	Members of this family are proteinase inhibitors that contain eight cysteines that form four disulphide bridges. The structure of the proteinase-inhibitor complex is known [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	API	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	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR003465	Proteinase inhibitor I20	Family

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.