Annotations: 1IB9

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1ib9a_	Small proteins	Knottins (small inhibitors, toxins, lectins)	Plant inhibitors of proteinases and amylases	Plant inhibitors of proteinases and amylases	Trypsin inhibitor	(Momordica cochinchinensis ) [TaxId: 3674 ],	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	8033100	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	Squash	e1ib9A1	A: few secondary structure elements	X: omega toxin-like	H: omega toxin-related	T: omega toxin-related	F: Squash	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00299	Squash family serine protease inhibitor (Squash)	Squash family serine protease inhibitor	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	TRYPSIN INHIBITOR II	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	negative regulation of hydrolase activity regulation of cellular process negative regulation of proteolysis regulation of serine-type endopeptidase activity regulation of catalytic activity negative regulation of biological process negative regulation of catalytic activity negative regulation of endopeptidase activity regulation of primary metabolic process negative regulation of peptidase activity regulation of proteolysis regulation of serine-type peptidase activity proteolysis regulation of endopeptidase activity negative regulation of cellular process negative regulation of hydrolase activity regulation of cellular process negative regulation of proteolysis regulation of serine-type endopeptidase activity regulation of catalytic activity negative regulation of biological process negative regulation of catalytic activity negative regulation of endopeptidase activity regulation of primary metabolic process negative regulation of peptidase activity regulation of proteolysis regulation of serine-type peptidase activity proteolysis regulation of endopeptidase activity negative regulation of cellular process protein metabolic process negative regulation of protein metabolic process negative regulation of macromolecule metabolic process negative regulation of serine-type endopeptidase activity regulation of biological process negative regulation of serine-type peptidase activity regulation of protein metabolic process negative regulation of metabolic process regulation of peptidase activity biological regulation negative regulation of molecular function primary metabolic process regulation of macromolecule metabolic process regulation of molecular function regulation of hydrolase activity metabolic process cellular process macromolecule metabolic process regulation of metabolic process response to stimulus defense response response to stress	cellular anatomical structure extracellular region

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR011052	Proteinase/amylase inhibitor domain superfamily	Homologous Superfamily
A	IPR000737	Proteinase inhibitor I7, squash	Family

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.