1S2K

Structure of SCP-B a member of the Eqolisin family of Peptidases in a complex with a Tripeptide Ala-Ile-His

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
Structure Motif: Primary M-CSA Annotation

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1s2ka_	All beta proteins	Concanavalin A-like lectins/glucanases	Concanavalin A-like lectins/glucanases	Peptidase A4	Scytalidopepsin B	(Scytalidium lignicola ) [TaxId: 5539 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Concanavalin A-like lectins/glucanases	8042725	3000120	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_A4	e1s2kA1	A: beta sandwiches	X: jelly-roll	H: Concanavalin A-like	T: Concanavalin A-like lectins/glucanases	F: Peptidase_A4	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.120.700	Mainly Beta	Sandwich	Jelly Rolls	Peptidase G1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF01828	Peptidase A4 family (Peptidase_A4)	Peptidase A4 family	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Scytalidopepsin B	aspartic-type peptidase activity peptidase activity catalytic activity, acting on a protein hydrolase activity aspartic-type endopeptidase activity catalytic activity endopeptidase activity glutamic-type endopeptidase activity glutamic-type peptidase activity	organic substance metabolic process organonitrogen compound metabolic process proteolysis metabolic process primary metabolic process protein metabolic process macromolecule metabolic process	-
B	Ala-Ile-His tripeptide	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR013320	Concanavalin A-like lectin/glucanase domain superfamily	Homologous Superfamily
A	IPR033863	Scytalidoglutamic peptidase	Family
A	IPR038656	Peptidase G1 superfamily	Homologous Superfamily
A	IPR000250	Peptidase G1	Family

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

Chains	Enzyme Name	Description	Catalytic Residues
A	scytalidopepsin B M-CSA #595	Scytalidopepsin-B is a member of a group of fungal pepstatin-insensitive glutamic peptidases known as the eqolsins. The enzyme has been shown to cleave angiotensin II and the oxidised insulin B chain, and operates most efficiently in acidic conditions. The eqolsins show no sequence homology to the well known pepsin-like or retroviral aspartic peptidases.	Defined by 2 residues: GLN:A-53GLU:A-136 \| Explore in 3D: M-CSA Motif Definition Search M-CSA Motif EC: 3.4.23.32 (PDB Primary Data) Search M-CSA Motif + EC 3.4.23.32

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.