1SP4

Crystal structure of NS-134 in complex with bovine cathepsin B: a two headed epoxysuccinyl inhibitor extends along the whole active site cleft

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 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	d1sp4.1	Alpha and beta proteins (a+b)	Cysteine proteinases	Cysteine proteinases	Papain-like	(Pro)cathepsin B	(Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
B	d1sp4.1	Alpha and beta proteins (a+b)	Cysteine proteinases	Cysteine proteinases	Papain-like	(Pro)cathepsin B	(Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2B Superfamily	Cysteine proteinases	8039659	3001808	SCOP2B (2022-06-29)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.20.5.170	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces		CATH (4.3.0)
B	3.90.70.10	Alpha Beta	Alpha-Beta Complex	Cathepsin B	Chain A	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B	PF00112	Papain family cysteine protease (Peptidase_C1)	Papain family cysteine protease	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Cathepsin B	peptidase activity catalytic activity, acting on a protein hydrolase activity catalytic activity endopeptidase activity cysteine-type peptidase activity cysteine-type endopeptidase activity	regulation of molecular function regulation of catalytic activity biological regulation catabolic process proteolysis involved in protein catabolic process proteolysis metabolic process cellular process primary metabolic process protein catabolic process protein metabolic process macromolecule metabolic process macromolecule catabolic process	membrane-bounded organelle intracellular anatomical structure pigment granule intracellular vesicle intracellular membrane-bounded organelle intracellular organelle melanosome cellular anatomical structure cytoplasmic vesicle organelle cytoplasm vesicle cell periphery apical part of cell membrane-bounded organelle intracellular anatomical structure pigment granule intracellular vesicle intracellular membrane-bounded organelle intracellular organelle melanosome cellular anatomical structure cytoplasmic vesicle organelle cytoplasm vesicle cell periphery apical part of cell membrane plasma membrane plasma membrane region apical plasma membrane extracellular region extracellular space lytic vacuole vacuole lysosome
B	Cathepsin B	peptidase activity catalytic activity, acting on a protein hydrolase activity catalytic activity endopeptidase activity cysteine-type peptidase activity cysteine-type endopeptidase activity	regulation of molecular function regulation of catalytic activity biological regulation catabolic process proteolysis involved in protein catabolic process proteolysis metabolic process cellular process primary metabolic process protein catabolic process protein metabolic process macromolecule metabolic process macromolecule catabolic process	membrane-bounded organelle intracellular anatomical structure pigment granule intracellular vesicle intracellular membrane-bounded organelle intracellular organelle melanosome cellular anatomical structure cytoplasmic vesicle organelle cytoplasm vesicle cell periphery apical part of cell membrane-bounded organelle intracellular anatomical structure pigment granule intracellular vesicle intracellular membrane-bounded organelle intracellular organelle melanosome cellular anatomical structure cytoplasmic vesicle organelle cytoplasm vesicle cell periphery apical part of cell membrane plasma membrane plasma membrane region apical plasma membrane extracellular region extracellular space lytic vacuole vacuole lysosome

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR025661	Cysteine peptidase, asparagine active site	Active Site
A	IPR000169	Cysteine peptidase, cysteine active site	Active Site
A	IPR012599	Peptidase C1A, propeptide	Domain
A	IPR013128	Peptidase C1A	Family
A	IPR000668	Peptidase C1A, papain C-terminal	Domain
A	IPR038765	Papain-like cysteine peptidase superfamily	Homologous Superfamily
A	IPR025660	Cysteine peptidase, histidine active site	Active Site
B	IPR025661	Cysteine peptidase, asparagine active site	Active Site
B	IPR000169	Cysteine peptidase, cysteine active site	Active Site
B	IPR012599	Peptidase C1A, propeptide	Domain
B	IPR013128	Peptidase C1A	Family
B	IPR000668	Peptidase C1A, papain C-terminal	Domain
B	IPR038765	Papain-like cysteine peptidase superfamily	Homologous Superfamily
B	IPR025660	Cysteine peptidase, histidine 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.