4SGB | pdb_00004sgb

STRUCTURE OF THE COMPLEX OF STREPTOMYCES GRISEUS PROTEINASE B AND POLYPEPTIDE CHYMOTRYPSIN INHIBITOR-1 FROM RUSSET BURBANK POTATO TUBERS AT 2.1 ANGSTROMS RESOLUTION

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)
B [auth I]	d4sgbi_	Small proteins	Plant proteinase inhibitors	Plant proteinase inhibitors	Plant proteinase inhibitors	Plant chymotrypsin inhibitor	(Solanum tuberosum ) [TaxId: 4113 ],	SCOPe (2.08)
A [auth E]	d4sgbe_	All beta proteins	Trypsin-like serine proteases	Trypsin-like serine proteases	Prokaryotic proteases	Protease B	(Streptomyces griseus ) [TaxId: 1911 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B [auth I]	SCOP2 Family	Plant proteinase inhibitors	8026334	4003423	SCOP2 (2022-06-29)
B [auth I]	SCOP2 Superfamily	Plant proteinase inhibitors	8038713	3000611	SCOP2 (2022-06-29)
A [auth E]	SCOP2B Superfamily	Trypsin-like serine proteases	8035344	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)
B [auth I]	Prot_inhib_II	e4sgbI1	A: few secondary structure elements	X: Plant proteinase inhibitors (From Topology)	H: Plant proteinase inhibitors (From Topology)	T: Plant proteinase inhibitors	F: Prot_inhib_II	ECOD (1.6)
A [auth E]	Trypsin_3	e4sgbE1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel 2	F: Trypsin_3	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B [auth I]	3.30.60.30	Alpha Beta	2-Layer Sandwich	Wheat Germ Agglutinin (Isolectin 2)	domain 1	CATH (4.3.0)
A [auth E]	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
B [auth I]	PF02428	Potato type II proteinase inhibitor family (Prot_inhib_II)	Potato type II proteinase inhibitor family	Members of this family are proteinase inhibitors that contain eight cysteines that form four disulphide bridges. The structure of the proteinase-inhibitor complex is known [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B [auth I]	POTATO INHIBITOR, PCI-1	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	-	-
A [auth E]	SERINE PROTEINASE B	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	cellular anatomical structure extracellular region

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B [auth I]	IPR051391	Protease inhibitor I20 (potato type II proteinase inhibitor)	Family
B [auth I]	IPR003465	Proteinase inhibitor I20	Family
A [auth E]	IPR001254	Serine proteases, trypsin domain	Domain
A [auth E]	IPR009003	Peptidase S1, PA clan	Homologous Superfamily
A [auth E]	IPR004236	Peptidase S1A, alpha-lytic prodomain	Domain
A [auth E]	IPR001316	Peptidase S1A, streptogrisin	Family
A [auth E]	IPR018114	Serine proteases, trypsin family, histidine active site	Active Site
A [auth E]	IPR043504	Peptidase_S1_PA_chymotrypsin	Unknown
A [auth E]	IPR033116	Serine proteases, trypsin family, serine active site	Active Site

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.