Annotations: 1H20

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1h20a_	Small proteins	Knottins (small inhibitors, toxins, lectins)	Plant inhibitors of proteinases and amylases	Plant inhibitors of proteinases and amylases	Carboxypeptidase A inhibitor	POTATO (Solanum tuberosum ) [TaxId: 4113 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Plant inhibitors of proteinases and amylases	8038109	3000215	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	Chitin_bind_1	e1h20A1	A: a/b three-layered sandwiches	X: EGF-like	H: EGF-related	T: EGF/Laminin	F: Chitin_bind_1	ECOD (v294.1)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF02977	Carboxypeptidase A inhibitor (CarbpepA_inh)	Carboxypeptidase A inhibitor		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	METALLOCARBOXYPEPTIDASE INHIBITOR	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	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR004231	Carboxypeptidase A inhibitor-like	Domain
A	IPR011052	Proteinase/amylase inhibitor domain superfamily	Homologous Superfamily

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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.