1RTU

USTILAGO SPHAEROGENA RIBONUCLEASE U2

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	d1rtua_	Alpha and beta proteins (a+b)	Microbial ribonucleases	Microbial ribonucleases	Fungal ribonucleases	RNase U2	(Ustilago sphaerogena ) [TaxId: 5271 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Fungal ribonucleases	8021175	4001845	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Microbial ribonucleases	8033555	3001847	SCOP2 (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	Ribonuclease	e1rtuA1	A: a+b two layers	X: Microbial ribonucleases-like	H: Microbial ribonucleases (From Topology)	T: Microbial ribonucleases	F: Ribonuclease	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.10.450.30	Alpha Beta	Roll	Nuclear Transport Factor 2	Chain: A,	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00545	ribonuclease (Ribonuclease)	ribonuclease	This enzyme hydrolyses RNA and oligoribonucleotides.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	RIBONUCLEASE U2	lyase activity catalytic activity endonuclease activity, active with either ribo- or deoxyribonucleic acids and producing 3'-phosphomonoesters endonuclease activity catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid RNA nuclease activity hydrolase activity RNA endonuclease activity, producing 3'-phosphomonoesters nuclease activity hydrolase activity, acting on ester bonds ribonuclease U2 activity RNA endonuclease activity RNA binding lyase activity catalytic activity endonuclease activity, active with either ribo- or deoxyribonucleic acids and producing 3'-phosphomonoesters endonuclease activity catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid RNA nuclease activity hydrolase activity RNA endonuclease activity, producing 3'-phosphomonoesters nuclease activity hydrolase activity, acting on ester bonds ribonuclease U2 activity RNA endonuclease activity RNA binding binding nucleic acid binding cation binding ion binding metal ion binding small molecule binding	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR000026	Guanine-specific ribonuclease N1-like	Family
A	IPR051386	Guanyl-specific ribonuclease N1/T1	Family
A	IPR016191	Ribonuclease/ribotoxin	Homologous Superfamily

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

Chains	Enzyme Name	Description	Catalytic Residues
A	ribonuclease U2 M-CSA #908	Catalyses the two-stage endonucleolytic cleavage of nucleoside 3'-phosphates and 3'-phosphooligonucleotides ending in A-P or G-P with 2',3'-cyclic phosphate intermediates. The enzyme contains an isoaspartate residue.	Defined by 4 residues: HIS:A-41GLU:A-62ARG:A-85HIS:A-101 \| Explore in 3D: M-CSA Motif Definition Search M-CSA Motif EC: 4.6.1.20 (UniProt) Search M-CSA Motif + EC 4.6.1.20

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.