3QYD

Crystal structure of a recombinant chimeric trypsin inhibitor

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	d3qyda_	All beta proteins	beta-Trefoil	STI-like	Kunitz (STI) inhibitors	automated matches	Goa bean,asparagus bean,asparagus pea,winged beans (Psophocarpus tetragonolobus ) [TaxId: 3891 ],	SCOPe (2.08)
B [auth C]	d3qydc_	All beta proteins	beta-Trefoil	STI-like	Kunitz (STI) inhibitors	automated matches	Goa bean,asparagus bean,asparagus pea,winged beans (Psophocarpus tetragonolobus ) [TaxId: 3891 ],	SCOPe (2.08)
C [auth B]	d3qydb_	All beta proteins	beta-Trefoil	STI-like	Kunitz (STI) inhibitors	automated matches	Goa bean,asparagus bean,asparagus pea,winged beans (Psophocarpus tetragonolobus ) [TaxId: 3891 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	STI-like	8042035	3000715	SCOP2B (2022-06-29)
B [auth C]	SCOP2B Superfamily	STI-like	8042035	3000715	SCOP2B (2022-06-29)
C [auth B]	SCOP2B Superfamily	STI-like	8042035	3000715	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	Kunitz_legume	e3qydA1	A: beta duplicates or obligate multimers	X: beta-Trefoil (From Topology)	H: beta-Trefoil (From Topology)	T: beta-Trefoil	F: Kunitz_legume	ECOD (1.6)
B [auth C]	Kunitz_legume	e3qydC1	A: beta duplicates or obligate multimers	X: beta-Trefoil (From Topology)	H: beta-Trefoil (From Topology)	T: beta-Trefoil	F: Kunitz_legume	ECOD (1.6)
C [auth B]	Kunitz_legume	e3qydB1	A: beta duplicates or obligate multimers	X: beta-Trefoil (From Topology)	H: beta-Trefoil (From Topology)	T: beta-Trefoil	F: Kunitz_legume	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.80.10.50	Mainly Beta	Trefoil	Trefoil (Acidic Fibroblast Growth Factor, subunit A)		CATH (4.3.0)
B [auth C]	2.80.10.50	Mainly Beta	Trefoil	Trefoil (Acidic Fibroblast Growth Factor, subunit A)		CATH (4.3.0)
C [auth B]	2.80.10.50	Mainly Beta	Trefoil	Trefoil (Acidic Fibroblast Growth Factor, subunit A)		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B [auth C], C [auth B]	PF00197	Trypsin and protease inhibitor (Kunitz_legume)	Trypsin and protease inhibitor	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B [auth C], C [auth B]	Chymotrypsin inhibitor 3	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, B [auth C], C [auth B]	IPR002160	Proteinase inhibitor I3, Kunitz legume	Family
A, B [auth C], C [auth B]	IPR011065	Kunitz inhibitor STI-like 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.