Annotations: 3PV3

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Trypsin_2	e3pv3A1	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	e3pv3A6	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	e3pv3B1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel 2	F: Trypsin_2	ECOD (1.6)
B	PDZ_2	e3pv3B3	A: beta barrels	X: PDZ domain (From Topology)	H: PDZ domain (From Topology)	T: PDZ domain	F: PDZ_2	ECOD (1.6)
C	Trypsin_2	e3pv3C4	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel 2	F: Trypsin_2	ECOD (1.6)
C	PDZ_2	e3pv3C5	A: beta barrels	X: PDZ domain (From Topology)	H: PDZ domain (From Topology)	T: PDZ domain	F: PDZ_2	ECOD (1.6)
D	Trypsin_2	e3pv3D4	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel 2	F: Trypsin_2	ECOD (1.6)
D	PDZ_2	e3pv3D5	A: beta barrels	X: PDZ domain (From Topology)	H: PDZ domain (From Topology)	T: PDZ domain	F: PDZ_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 (utative)
A	2.30.42.10	Mainly Beta	Roll	Pdz3 Domain	PDZ domain	CATH (utative)
B	2.40.10.120	Mainly Beta	Beta Barrel	Thrombin, subunit H		CATH (4.3.0)
B	2.30.42.10	Mainly Beta	Roll	Pdz3 Domain	PDZ domain	CATH (4.3.0)
C	2.40.10.120	Mainly Beta	Beta Barrel	Thrombin, subunit H		CATH (utative)
C	2.30.42.10	Mainly Beta	Roll	Pdz3 Domain	PDZ domain	CATH (utative)
D	2.40.10.120	Mainly Beta	Beta Barrel	Thrombin, subunit H		CATH (4.3.0)
D	2.30.42.10	Mainly Beta	Roll	Pdz3 Domain	PDZ domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF13180	PDZ domain (PDZ_2)	PDZ domain	-	Domain
A, B, C, D	PF17820	PDZ domain (PDZ_6)	PDZ domain	This entry represents the PDZ domain from a wide variety of proteins.	Domain
A, B, C, D	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, D	DegQ	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	proteolysis metabolic process cellular process primary metabolic process protein metabolic process macromolecule metabolic process	-
E, F, G, H	Substrate peptide (Poly-Ala)	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR009003	Peptidase S1, PA clan	Homologous Superfamily
A, B, C, D	IPR011782	Peptidase S1C, Do	Family
A, B, C, D	IPR041489	PDZ domain 6	Domain
A, B, C, D	IPR001478	PDZ domain	Domain
A, B, C, D	IPR001940	Peptidase S1C	Family
A, B, C, D	IPR036034	PDZ 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.