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	Peptidase_C47	e1y4hA1	A: a+b complex topology	X: Cysteine proteinases-like	H: Cysteine proteinases (From Topology)	T: Cysteine proteinases	F: Peptidase_C47	ECOD (1.6)
B	Peptidase_C47	e1y4hB1	A: a+b complex topology	X: Cysteine proteinases-like	H: Cysteine proteinases (From Topology)	T: Cysteine proteinases	F: Peptidase_C47	ECOD (1.6)
C	Staphostatin_B	e1y4hC1	A: beta barrels	X: Lipocalins/Streptavidin	H: Staphostatin (From Topology)	T: Staphostatin	F: Staphostatin_B	ECOD (1.6)
D	Staphostatin_B	e1y4hD1	A: beta barrels	X: Lipocalins/Streptavidin	H: Staphostatin (From Topology)	T: Staphostatin	F: Staphostatin_B	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
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	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 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 R01GM133198.