Annotations: 9CT1

Complex between the porcine trypsin and M271 a Kunitz-STI from Solanum tuberosum

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
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)
A	SCOP2B Superfamily	Trypsin-like serine proteases	8036522	3000114	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Trypsin-like serine proteases	8036522	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)
A	Reovirus_L2_GTase	e9ct1A1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: Reovirus_L2_GTase	ECOD (v295)
C	Reovirus_L2_GTase	e9ct1C1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: Reovirus_L2_GTase	ECOD (v295)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B, D	PF00197	Trypsin and protease inhibitor (Kunitz_legume)	Trypsin and protease inhibitor		Domain
A, C	PF00089	Trypsin (Trypsin)	Trypsin		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B, D	KTI-A protein	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 aspartic-type endopeptidase inhibitor activity	-	membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure organelle vacuole cytoplasm intracellular membrane-bounded organelle
A, C	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 cation binding ion binding binding metal ion binding small molecule binding	proteolysis metabolic process cellular process primary metabolic process protein metabolic process macromolecule metabolic process multicellular organismal process digestion	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B, D	IPR002160	Proteinase inhibitor I3, Kunitz legume	Family
B, D	IPR011065	Kunitz inhibitor STI-like superfamily	Homologous Superfamily
A, C	IPR001254	Serine proteases, trypsin domain	Domain
A, C	IPR009003	Peptidase S1, PA clan	Homologous Superfamily
A, C	IPR018114	Serine protease-like, trypsin family, histidine active site	Active Site
A, C	IPR050127	Serine Proteases (Peptidase S1 Family)	Family
A, C	IPR001314	Peptidase S1A, chymotrypsin family	Family
A, C	IPR043504	Peptidase_S1_PA_chymotrypsin	Unknown
A, C	IPR033116	Serine proteases, trypsin family, serine active site	Active Site

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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.