Annotations: 3E1Z

Crystal structure of the parasite protesase inhibitor chagasin in complex with papain

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
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	d3e1zb_	Alpha and beta proteins (a+b)	Cysteine proteinases	Cysteine proteinases	Papain-like	Papain	(Carica papaya ) [TaxId: 3649 ],	SCOPe (2.08)
A	d3e1za_	All beta proteins	Immunoglobulin-like beta-sandwich	ICP-like	ICP-like	Chagasin	(Trypanosoma cruzi ) [TaxId: 5693 ],	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	8036216	3001808	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	ICP-like	8055379	3002058	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	Peptidase_S66C	e3e1zB1	A: beta barrels	X: HTH	H: Nudix	T: Nudix	F: Peptidase_S66C	ECOD (v294.2)
A	Peptidase_S66C	e3e1zA1	A: beta barrels	X: HTH	H: Nudix	T: Nudix	F: Peptidase_S66C	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.90.70.10	Alpha Beta	Alpha-Beta Complex	Cathepsin B	Chain A	CATH (4.3.0)
A	2.60.40.2020	Mainly Beta	Sandwich	Immunoglobulin-like		CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	Papain	protein binding binding serpin family protein binding cysteine-type peptidase activity peptidase activity catalytic activity, acting on a protein hydrolase activity catalytic activity	proteolysis metabolic process cellular process primary metabolic process protein metabolic process macromolecule metabolic process	-
A	Chagasin	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	-	cell surface cellular anatomical structure membrane-bounded organelle intracellular organelle intracellular anatomical structure cytoplasmic vesicle organelle intracellular vesicle cytoplasm intracellular membrane-bounded organelle vesicle ciliary pocket cell projection cilium cell surface cellular anatomical structure membrane-bounded organelle intracellular organelle intracellular anatomical structure cytoplasmic vesicle organelle intracellular vesicle cytoplasm intracellular membrane-bounded organelle vesicle ciliary pocket cell projection cilium plasma membrane bounded cell projection

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B	IPR038765	Papain-like cysteine peptidase superfamily	Homologous Superfamily
B	IPR025661	Cysteine peptidase, asparagine active site	Active Site
B	IPR000169	Cysteine peptidase, cysteine active site	Active Site
B	IPR025660	Cysteine peptidase, histidine active site	Active Site
B	IPR013128	Peptidase C1A	Family
B	IPR000668	Peptidase C1A, papain C-terminal	Domain
B	IPR013201	Cathepsin propeptide inhibitor domain (I29)	Domain
B	IPR039417	Papain-like cysteine endopeptidase	Domain
A	IPR036331	Chagasin-like superfamily	Homologous Superfamily
A	IPR018990	Proteinase inhibitor I42, chagasin	Domain
A	IPR052781	Cysteine protease inhibitor I42	Family

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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.