Annotations: 4AOR

Cationic trypsin in complex with the Spinacia oleracea trypsin inhibitor III (SOTI-III)

External Resource: Annotation

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: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
C	SCOP2B Superfamily	Trypsin-like serine proteases	8037496	3000114	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Trypsin-like serine proteases	8037496	3000114	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Trypsin-like serine proteases	8037496	3000114	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)
F	ABC_tran	e4aorF1	A: alpha arrays	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: ABC_tran	ECOD (v295.2)
E	ABC_tran	e4aorE1	A: alpha arrays	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: ABC_tran	ECOD (v295.2)
D	Tryp_inh	e4aorD1	A: alpha arrays	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: Tryp_inh	ECOD (v295.2)
C	14-3-3	e4aorC1	A: alpha arrays	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: 14-3-3	ECOD (v295.2)
B	14-3-3	e4aorB1	A: alpha arrays	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: 14-3-3	ECOD (v295.2)
A	14-3-3	e4aorA1	A: alpha arrays	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: 14-3-3	ECOD (v295.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C	2.40.10.10	Mainly Beta	Beta Barrel	Thrombin, subunit H	Trypsin-like serine proteases	CATH (4.3.0)
B	2.40.10.10	Mainly Beta	Beta Barrel	Thrombin, subunit H	Trypsin-like serine proteases	CATH (4.3.0)
A	2.40.10.10	Mainly Beta	Beta Barrel	Thrombin, subunit H	Trypsin-like serine proteases	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
D, E, F	PF17983	Trypsin inhibitors 1,2 and 3 (Tryp_inh)	Trypsin inhibitors 1,2 and 3	This is domain is found in trypsin inhibitor 1, 2 and 3 found in Chenopodiaceae. Structure analysis of S. oleracea trypsin inhibitor III (SOTI-III), in complex with bovine pancreatic trypsin, shows a knottin-like cystine-bridge topology [1].	Domain
A, B, C	PF00089	Trypsin (Trypsin)	Trypsin		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
D, E, F	TRYPSIN INHIBITOR 3	-	-	-
A, B, C	CATIONIC TRYPSIN	peptidase activity catalytic activity, acting on a protein serine hydrolase activity serine-type peptidase activity hydrolase activity serine-type endopeptidase activity catalytic activity endopeptidase activity protein binding binding serpin family protein binding	proteolysis metabolic process cellular process primary metabolic process protein metabolic process macromolecule metabolic process	protein-containing complex serine protease inhibitor complex protease inhibitor complex peptidase inhibitor complex cellular anatomical structure extracellular region

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
D, E, F	IPR040875	Trypsin inhibitor	Domain
A, B, C	IPR001254	Serine proteases, trypsin domain	Domain
A, B, C	IPR009003	Peptidase S1, PA clan	Homologous Superfamily
A, B, C	IPR018114	Serine protease-like, trypsin family, histidine active site	Active Site
A, B, C	IPR050127	Serine Proteases (Peptidase S1 Family)	Family
A, B, C	IPR001314	Peptidase S1A, chymotrypsin family	Family
A, B, C	IPR033116	Serine proteases, trypsin family, serine active site	Active Site