Annotations: 3AJV

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
D	tRNA_int_endo_N	e3ajvD1	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: tRNA_int_endo_N	ECOD (1.6)
D	tRNA_int_endo	e3ajvD2	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: tRNA_int_endo	ECOD (1.6)
B	tRNA_int_endo_N	e3ajvB2	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: tRNA_int_endo_N	ECOD (1.6)
B	tRNA_int_endo	e3ajvB1	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: tRNA_int_endo	ECOD (1.6)
C	SEN2_like	e3ajvC1	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: SEN2_like	ECOD (1.6)
C	tRNA_int_endo	e3ajvC2	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: tRNA_int_endo	ECOD (1.6)
A	SEN2_like	e3ajvA2	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: SEN2_like	ECOD (1.6)
A	tRNA_int_endo	e3ajvA1	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: tRNA_int_endo	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
D	3.40.1170.20	Alpha Beta	3-Layer(aba) Sandwich	MutS, DNA mismatch repair protein, domain I	tRNA intron endonuclease, N-terminal domain	CATH (4.3.0)
D	3.40.1350.10	Alpha Beta	3-Layer(aba) Sandwich	Trna Endonuclease	Chain: A, domain 1	CATH (4.3.0)
B	3.40.1170.20	Alpha Beta	3-Layer(aba) Sandwich	MutS, DNA mismatch repair protein, domain I	tRNA intron endonuclease, N-terminal domain	CATH (4.3.0)
B	3.40.1350.10	Alpha Beta	3-Layer(aba) Sandwich	Trna Endonuclease	Chain: A, domain 1	CATH (4.3.0)
C	3.40.1170.20	Alpha Beta	3-Layer(aba) Sandwich	MutS, DNA mismatch repair protein, domain I	tRNA intron endonuclease, N-terminal domain	CATH (4.3.0)
C	3.40.1350.10	Alpha Beta	3-Layer(aba) Sandwich	Trna Endonuclease	Chain: A, domain 1	CATH (4.3.0)
A	3.40.1170.20	Alpha Beta	3-Layer(aba) Sandwich	MutS, DNA mismatch repair protein, domain I	tRNA intron endonuclease, N-terminal domain	CATH (4.3.0)
A	3.40.1350.10	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
B, D	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
B, D	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
A, C	PF22502	tRNA-intron endonuclease SEN2-like, N-terminal domain (SEN2-like_N)	tRNA-intron endonuclease SEN2-like, N-terminal domain	This entry represents a tRNA-intron endonuclease SEN2-like N-terminal domain in a splicing endonuclease from Aeropyrum pernix [1,2].	Domain
A, C	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
B, D	tRNA-splicing endonuclease	tRNA-specific ribonuclease activity endonuclease activity catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid RNA nuclease activity catalytic activity, acting on a tRNA tRNA-intron lyase activity phosphorus-oxygen lyase activity nuclease activity RNA endonuclease activity lyase activity catalytic activity binding nucleic acid binding	RNA splicing RNA metabolic process primary metabolic process gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process tRNA metabolic process tRNA splicing, via endonucleolytic cleavage and ligation nucleic acid biosynthetic process biosynthetic process RNA splicing, via endonucleolytic cleavage and ligation tRNA processing RNA splicing RNA metabolic process primary metabolic process gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process tRNA metabolic process tRNA splicing, via endonucleolytic cleavage and ligation nucleic acid biosynthetic process biosynthetic process RNA splicing, via endonucleolytic cleavage and ligation tRNA processing metabolic process cellular process RNA processing macromolecule metabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm
A, C	Putative uncharacterized protein	binding nucleic acid binding tRNA-specific ribonuclease activity endonuclease activity catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid RNA nuclease activity catalytic activity, acting on a tRNA tRNA-intron lyase activity phosphorus-oxygen lyase activity nuclease activity RNA endonuclease activity lyase activity catalytic activity	RNA splicing RNA metabolic process primary metabolic process gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process tRNA metabolic process tRNA splicing, via endonucleolytic cleavage and ligation nucleic acid biosynthetic process biosynthetic process RNA splicing, via endonucleolytic cleavage and ligation tRNA processing RNA splicing RNA metabolic process primary metabolic process gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process tRNA metabolic process tRNA splicing, via endonucleolytic cleavage and ligation nucleic acid biosynthetic process biosynthetic process RNA splicing, via endonucleolytic cleavage and ligation tRNA processing metabolic process cellular process RNA processing macromolecule metabolic process	cellular anatomical structure membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B, D	IPR006677	tRNA intron endonuclease, catalytic domain-like	Domain
B, D	IPR036740	tRNA intron endonuclease, N-terminal domain superfamily	Homologous Superfamily
B, D	IPR011856	tRNA endonuclease-like domain superfamily	Homologous Superfamily
B, D	IPR036167	tRNA intron endonuclease, catalytic domain-like superfamily	Homologous Superfamily
B, D	IPR006678	tRNA intron endonuclease, N-terminal	Domain
B, D	IPR006676	tRNA-splicing endonuclease	Family
B, D	IPR016442	tRNA-splicing endonuclease, archaeal short subfamily	Family
A, C	IPR006677	tRNA intron endonuclease, catalytic domain-like	Domain
A, C	IPR055144	tRNA-intron endonuclease SEN2-like, N-terminal domain	Domain
A, C	IPR011856	tRNA endonuclease-like domain superfamily	Homologous Superfamily
A, C	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 R01GM157729.