Annotations: 4RI0

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	8089452	3000114	SCOP2B (2022-06-29)
B	SCOP2 Family	Prokaryotic proteases	8089451	4002151	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	Trypsin-like serine proteases	8089452	3000114	SCOP2 (2022-06-29)
C	SCOP2B Superfamily	Trypsin-like serine proteases	8089452	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	Trypsin_2	e4ri0A1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel 2	F: Trypsin_2	ECOD (1.6)
A	PDZ_2	e4ri0A2	A: beta barrels	X: PDZ domain (From Topology)	H: PDZ domain (From Topology)	T: PDZ domain	F: PDZ_2	ECOD (1.6)
B	Trypsin_2	e4ri0B1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel 2	F: Trypsin_2	ECOD (1.6)
C	Trypsin_2	e4ri0C1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel 2	F: Trypsin_2	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.40.10.120	Mainly Beta	Beta Barrel	Thrombin, subunit H		CATH (4.3.0)
A	2.30.42.10	Mainly Beta	Roll	Pdz3 Domain	PDZ domain	CATH (4.3.0)
B	2.40.10.10	Mainly Beta	Beta Barrel	Thrombin, subunit H	Trypsin-like serine proteases	CATH (4.3.0)
C	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
A, B, C	PF17820	PDZ domain (PDZ_6)	PDZ domain	This entry represents the PDZ domain from a wide variety of proteins.	Domain
A, B, C	PF13365	Trypsin-like peptidase domain (Trypsin_2)	Trypsin-like peptidase domain	This family includes trypsin-like peptidase domains.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C	Serine protease HTRA3	peptidase activity catalytic activity, acting on a protein hydrolase activity catalytic activity endopeptidase activity serine hydrolase activity serine-type peptidase activity serine-type endopeptidase activity identical protein binding protein binding binding	cellular response to stimulus negative regulation of transforming growth factor beta receptor signaling pathway regulation of cellular process cell surface receptor protein serine/threonine kinase signaling pathway cellular response to growth factor stimulus response to stimulus negative regulation of signaling signaling cellular response to transforming growth factor beta stimulus regulation of transmembrane receptor protein serine/threonine kinase signaling pathway negative regulation of biological process regulation of signal transduction negative regulation of cell communication cell communication regulation of transforming growth factor beta receptor signaling pathway cellular response to stimulus negative regulation of transforming growth factor beta receptor signaling pathway regulation of cellular process cell surface receptor protein serine/threonine kinase signaling pathway cellular response to growth factor stimulus response to stimulus negative regulation of signaling signaling cellular response to transforming growth factor beta stimulus regulation of transmembrane receptor protein serine/threonine kinase signaling pathway negative regulation of biological process regulation of signal transduction negative regulation of cell communication cell communication regulation of transforming growth factor beta receptor signaling pathway cellular response to endogenous stimulus negative regulation of cellular process signal transduction enzyme-linked receptor protein signaling pathway regulation of signaling regulation of biological process cell surface receptor signaling pathway negative regulation of response to stimulus regulation of cellular response to transforming growth factor beta stimulus response to endogenous stimulus regulation of cellular response to growth factor stimulus biological regulation negative regulation of signal transduction response to transforming growth factor beta regulation of response to stimulus transforming growth factor beta receptor signaling pathway regulation of cell communication cellular process response to growth factor transforming growth factor beta receptor superfamily signaling pathway negative regulation of transmembrane receptor protein serine/threonine kinase signaling pathway negative regulation of cellular response to growth factor stimulus negative regulation of BMP signaling pathway BMP signaling pathway cellular response to BMP stimulus regulation of BMP signaling pathway response to BMP organic substance metabolic process organonitrogen compound metabolic process proteolysis metabolic process primary metabolic process protein metabolic process macromolecule metabolic process	extracellular region cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C	IPR009003	Peptidase S1, PA clan	Homologous Superfamily
A, B, C	IPR036058	Kazal domain superfamily	Homologous Superfamily
A, B, C	IPR041489	PDZ domain 6	Domain
A, B, C	IPR001940	Peptidase S1C	Family
A, B, C	IPR036034	PDZ superfamily	Homologous Superfamily
A, B, C	IPR009030	Growth factor receptor cysteine-rich domain superfamily	Homologous Superfamily
A, B, C	IPR001478	PDZ domain	Domain
A, B, C	IPR002350	Kazal domain	Domain
A, B, C	IPR000867	Insulin-like growth factor-binding protein, IGFBP	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B, C	Pharos: P83110	breast cancer malignant pancreatic neoplasm breast fibroadenoma osteosarcoma large cell medulloblastoma pancreatic ductal adenocarcinoma

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.