Annotations: 2OST

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
C [auth A]	SCOP2 Family	slr0915-like	8046833	4005320	SCOP2 (2022-06-29)
C [auth A]	SCOP2 Superfamily	Restriction endonuclease-like	8103670	3000104	SCOP2 (2022-06-29)
D [auth B]	SCOP2B Superfamily	Restriction endonuclease-like	8103670	3000104	SCOP2B (2022-06-29)
E [auth C]	SCOP2B Superfamily	Restriction endonuclease-like	8103670	3000104	SCOP2B (2022-06-29)
F [auth D]	SCOP2B Superfamily	Restriction endonuclease-like	8103670	3000104	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)
C [auth A]	PDDEXK_5	e2ostA1	A: a/b three-layered sandwiches	X: Restriction endonuclease-like	H: Restriction endonuclease-like (From Topology)	T: Restriction endonuclease-like	F: PDDEXK_5	ECOD (1.6)
D [auth B]	PDDEXK_5	e2ostB1	A: a/b three-layered sandwiches	X: Restriction endonuclease-like	H: Restriction endonuclease-like (From Topology)	T: Restriction endonuclease-like	F: PDDEXK_5	ECOD (1.6)
E [auth C]	PDDEXK_5	e2ostC1	A: a/b three-layered sandwiches	X: Restriction endonuclease-like	H: Restriction endonuclease-like (From Topology)	T: Restriction endonuclease-like	F: PDDEXK_5	ECOD (1.6)
F [auth D]	PDDEXK_5	e2ostD1	A: a/b three-layered sandwiches	X: Restriction endonuclease-like	H: Restriction endonuclease-like (From Topology)	T: Restriction endonuclease-like	F: PDDEXK_5	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C [auth A]	3.40.1350.10	Alpha Beta	3-Layer(aba) Sandwich	Trna Endonuclease	Chain: A, domain 1	CATH (4.3.0)
D [auth B]	3.40.1350.10	Alpha Beta	3-Layer(aba) Sandwich	Trna Endonuclease	Chain: A, domain 1	CATH (4.3.0)
E [auth C]	3.40.1350.10	Alpha Beta	3-Layer(aba) Sandwich	Trna Endonuclease	Chain: A, domain 1	CATH (4.3.0)
F [auth D]	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
C [auth A], D [auth B], E [auth C], F [auth D]	PF11645	PD-(D/E)XK endonuclease (PDDEXK_5)	PD-(D/E)XK endonuclease	This family of endonucleases includes a group I intron-encoded endonuclease [1]. This family belongs to the PD-(D/E)XK superfamily [2-3].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth Y]	Synthetic DNA 29 MER	-	-	-
B [auth Z]	Synthetic DNA 29 MER	-	-	-
C [auth A], D [auth B], E [auth C], F [auth D]	Putative endonuclease	binding organic cyclic compound binding nucleic acid binding endonuclease activity nuclease activity hydrolase activity, acting on ester bonds hydrolase activity catalytic activity cation binding ion binding metal ion binding small molecule binding	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C [auth A], D [auth B], E [auth C], F [auth D]	IPR021671	PD(D/E)XK endonuclease	Domain
C [auth A], D [auth B], E [auth C], F [auth D]	IPR011856	tRNA endonuclease-like domain superfamily	Homologous Superfamily

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.