1Y4H

Wild type staphopain-staphostatin complex

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)
A	d1y4ha1	Alpha and beta proteins (a+b)	Cysteine proteinases	Cysteine proteinases	Papain-like	Staphopain SspB	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)
B	d1y4hb_	Alpha and beta proteins (a+b)	Cysteine proteinases	Cysteine proteinases	Papain-like	Staphopain SspB	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)
C	d1y4hc_	All beta proteins	Streptavidin-like	beta-Barrel protease inhibitors	Staphostatin	Staphostatin B (SspC)	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)
D	d1y4hd_	All beta proteins	Streptavidin-like	beta-Barrel protease inhibitors	Staphostatin	Staphostatin B (SspC)	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Papain-like	8021701	4000859	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Cysteine proteinases	8034081	3001808	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Cysteine proteinases	8034081	3001808	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	beta-Barrel protease inhibitors	8101735	3001476	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	beta-Barrel protease inhibitors	8101735	3001476	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	PF05543	e1y4hA1	A: a+b complex topology	X: Cysteine proteinases-like	H: Cysteine proteinases (From Topology)	T: Cysteine proteinases	F: PF05543	ECOD (1.6)
B	PF05543	e1y4hB1	A: a+b complex topology	X: Cysteine proteinases-like	H: Cysteine proteinases (From Topology)	T: Cysteine proteinases	F: PF05543	ECOD (1.6)
C	PF09023	e1y4hC1	A: beta barrels	X: Lipocalins/Streptavidin	H: Staphostatin (From Topology)	T: Staphostatin	F: PF09023	ECOD (1.6)
D	PF09023	e1y4hD1	A: beta barrels	X: Lipocalins/Streptavidin	H: Staphostatin (From Topology)	T: Staphostatin	F: PF09023	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.90.70.10	Alpha Beta	Alpha-Beta Complex	Cathepsin B	Chain A	CATH (4.3.0)
B	3.90.70.10	Alpha Beta	Alpha-Beta Complex	Cathepsin B	Chain A	CATH (4.3.0)
C	2.40.310.10	Mainly Beta	Beta Barrel	Staphostatins	beta-Barrel protease inhibitors	CATH (4.3.0)
D	2.40.310.10	Mainly Beta	Beta Barrel	Staphostatins	beta-Barrel protease inhibitors	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF05543	Staphopain peptidase C47 (Peptidase_C47)	Staphopain peptidase C47	-	Family
C, D	PF09023	Staphostatin B (Staphostatin_B)	Staphostatin B	Staphostatin B inhibits the cysteine protease Staphopain B, produced by Staphylococcus aureus, by blocking the active site of the enzyme. The domain adopts an eight-stranded mixed beta-barrel structure, with a deviation from the up-down topology of c ...	Staphostatin B inhibits the cysteine protease Staphopain B, produced by Staphylococcus aureus, by blocking the active site of the enzyme. The domain adopts an eight-stranded mixed beta-barrel structure, with a deviation from the up-down topology of canonical beta-barrels in the amino-terminal part of the molecule [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	cysteine protease	cysteine-type peptidase activity peptidase activity catalytic activity, acting on a protein hydrolase activity catalytic activity	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
C, D	cysteine protease inhibitor	enzyme regulator activity molecular function inhibitor activity peptidase regulator activity molecular function regulator activity enzyme inhibitor activity cysteine-type endopeptidase inhibitor activity peptidase inhibitor activity endopeptidase regulator activity endopeptidase inhibitor activity	-	intracellular anatomical structure cytoplasm cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR038765	Papain-like cysteine peptidase superfamily	Homologous Superfamily
A, B	IPR028076	Staphopain proregion	Domain
A, B	IPR025660	Cysteine peptidase, histidine active site	Active Site
A, B	IPR037155	Staphopain proregion superfamily	Homologous Superfamily
A, B	IPR008750	Staphopain peptidase C47	Family
A, B	IPR046350	Cystatin superfamily	Homologous Superfamily
C, D	IPR016085	Protease inhibitor, beta-barrel domain	Homologous Superfamily
C, D	IPR015113	Staphostatin B	Domain
C, D	IPR037296	Staphostatin A/B	Homologous Superfamily

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.