Annotations: 3IEY

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF02778	e3ieyA4	A: a+b two layers	X: Homing endonucleases-like	H: tRNA-intron endonuclease N-terminal domain-like (From Topology)	T: tRNA-intron endonuclease N-terminal domain-like	F: PF02778	ECOD (1.6)
A	PF01974	e3ieyA3	A: a/b three-layered sandwiches	X: Restriction endonuclease-like	H: tRNA-intron endonuclease catalytic domain-like (From Topology)	T: tRNA-intron endonuclease catalytic domain-like	F: PF01974	ECOD (1.6)
B	PF22355	e3ieyB1	A: a+b two layers	X: Homing endonucleases-like	H: tRNA-intron endonuclease N-terminal domain-like (From Topology)	T: tRNA-intron endonuclease N-terminal domain-like	F: PF22355	ECOD (1.6)
B	PF01974	e3ieyB2	A: a/b three-layered sandwiches	X: Restriction endonuclease-like	H: tRNA-intron endonuclease catalytic domain-like (From Topology)	T: tRNA-intron endonuclease catalytic domain-like	F: PF01974	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.1350.10	Alpha Beta	3-Layer(aba) Sandwich	Trna Endonuclease	Chain: A, domain 1	CATH (4.3.0)
B	3.40.1350.150	Alpha Beta	3-Layer(aba) Sandwich	Trna Endonuclease	Chain: A, domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF02778	tRNA intron endonuclease, N-terminal domain (tRNA_int_endo_N)	tRNA intron endonuclease, N-terminal domain	Members of this family cleave pre tRNA at the 5' and 3' splice sites to release the intron EC:3.1.27.9.	Domain
A	PF01974	tRNA intron endonuclease, catalytic C-terminal domain (tRNA_int_endo)	tRNA intron endonuclease, catalytic C-terminal domain	Members of this family cleave pre tRNA at the 5' and 3' splice sites to release the intron EC:3.1.27.9.	Domain
B	PF01974	tRNA intron endonuclease, catalytic C-terminal domain (tRNA_int_endo)	tRNA intron endonuclease, catalytic C-terminal domain	Members of this family cleave pre tRNA at the 5' and 3' splice sites to release the intron EC:3.1.27.9.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	tRNA-splicing endonuclease	endonuclease activity, active with either ribo- or deoxyribonucleic acids and producing 3'-phosphomonoesters tRNA-specific ribonuclease activity endonuclease activity catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid RNA nuclease activity hydrolase activity catalytic activity, acting on a tRNA RNA endonuclease activity, producing 3'-phosphomonoesters tRNA-intron endonuclease activity nuclease activity hydrolase activity, acting on ester bonds RNA endonuclease activity catalytic activity endonuclease activity, active with either ribo- or deoxyribonucleic acids and producing 3'-phosphomonoesters tRNA-specific ribonuclease activity endonuclease activity catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid RNA nuclease activity hydrolase activity catalytic activity, acting on a tRNA RNA endonuclease activity, producing 3'-phosphomonoesters tRNA-intron endonuclease activity nuclease activity hydrolase activity, acting on ester bonds RNA endonuclease activity catalytic activity lyase activity binding organic cyclic compound binding nucleic acid binding	RNA splicing cellular biosynthetic process cellular metabolic process RNA metabolic process primary metabolic process gene expression macromolecule biosynthetic process nucleic acid metabolic process nucleobase-containing compound metabolic process tRNA metabolic process tRNA splicing, via endonucleolytic cleavage and ligation organic cyclic compound metabolic process organic substance metabolic process biosynthetic process RNA splicing, via endonucleolytic cleavage and ligation RNA splicing cellular biosynthetic process cellular metabolic process RNA metabolic process primary metabolic process gene expression macromolecule biosynthetic process nucleic acid metabolic process nucleobase-containing compound metabolic process tRNA metabolic process tRNA splicing, via endonucleolytic cleavage and ligation organic cyclic compound metabolic process organic substance metabolic process biosynthetic process RNA splicing, via endonucleolytic cleavage and ligation tRNA processing organic substance biosynthetic process nucleic acid catabolic process metabolic process cellular process RNA processing macromolecule metabolic process	-
B	NEQ261	endonuclease activity, active with either ribo- or deoxyribonucleic acids and producing 3'-phosphomonoesters tRNA-specific ribonuclease activity endonuclease activity catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid RNA nuclease activity hydrolase activity catalytic activity, acting on a tRNA RNA endonuclease activity, producing 3'-phosphomonoesters tRNA-intron endonuclease activity nuclease activity hydrolase activity, acting on ester bonds RNA endonuclease activity catalytic activity	RNA splicing cellular biosynthetic process cellular metabolic process RNA metabolic process primary metabolic process gene expression macromolecule biosynthetic process nucleic acid metabolic process nucleobase-containing compound metabolic process tRNA metabolic process tRNA splicing, via endonucleolytic cleavage and ligation organic cyclic compound metabolic process organic substance metabolic process biosynthetic process RNA splicing, via endonucleolytic cleavage and ligation RNA splicing cellular biosynthetic process cellular metabolic process RNA metabolic process primary metabolic process gene expression macromolecule biosynthetic process nucleic acid metabolic process nucleobase-containing compound metabolic process tRNA metabolic process tRNA splicing, via endonucleolytic cleavage and ligation organic cyclic compound metabolic process organic substance metabolic process biosynthetic process RNA splicing, via endonucleolytic cleavage and ligation tRNA processing organic substance biosynthetic process nucleic acid catabolic process metabolic process cellular process RNA processing macromolecule metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR006677	tRNA intron endonuclease, catalytic domain-like	Domain
A	IPR036740	tRNA intron endonuclease, N-terminal domain superfamily	Homologous Superfamily
A	IPR011856	tRNA endonuclease-like domain superfamily	Homologous Superfamily
A	IPR036167	tRNA intron endonuclease, catalytic domain-like superfamily	Homologous Superfamily
A	IPR006678	tRNA intron endonuclease, N-terminal	Domain
A	IPR006676	tRNA-splicing endonuclease	Family
A	IPR016442	tRNA-splicing endonuclease, archaeal short subfamily	Family
B	IPR006677	tRNA intron endonuclease, catalytic domain-like	Domain
B	IPR036167	tRNA intron endonuclease, catalytic domain-like superfamily	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.