Annotations: 4F0Q

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
D	V-set	e4f0qD1	A: a/b three-layered sandwiches	X: beta-Grasp	H: HTH	T: winged helix domain	F: V-set	ECOD (v294.1)
C	V-set	e4f0qC1	A: a/b three-layered sandwiches	X: beta-Grasp	H: HTH	T: winged helix domain	F: V-set	ECOD (v294.1)
B	V-set	e4f0qB1	A: a/b three-layered sandwiches	X: beta-Grasp	H: HTH	T: winged helix domain	F: V-set	ECOD (v294.1)
A	V-set	e4f0qA1	A: a/b three-layered sandwiches	X: beta-Grasp	H: HTH	T: winged helix domain	F: V-set	ECOD (v294.1)

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
D	2.30.280.20	Mainly Beta	Roll	PUA domain-like		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)
C	2.30.280.20	Mainly Beta	Roll	PUA domain-like		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)
B	2.30.280.20	Mainly Beta	Roll	PUA domain-like		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)
A	2.30.280.20	Mainly Beta	Roll	PUA domain-like		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)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	Restriction endonuclease	DNA binding binding nucleic acid binding endonuclease activity nuclease activity catalytic activity, acting on a nucleic acid catalytic activity cation binding ion binding metal ion binding small molecule binding	biological process involved in interspecies interaction between organisms response to stimulus response to other organism defense response DNA restriction-modification system defense response to symbiont response to external stimulus primary metabolic process clearance of foreign intracellular DNA clearance of foreign intracellular nucleic acids DNA metabolic process response to biotic stimulus nucleic acid metabolic process nucleobase-containing compound metabolic process DNA modification biological process involved in interspecies interaction between organisms response to stimulus response to other organism defense response DNA restriction-modification system defense response to symbiont response to external stimulus primary metabolic process clearance of foreign intracellular DNA clearance of foreign intracellular nucleic acids DNA metabolic process response to biotic stimulus nucleic acid metabolic process nucleobase-containing compound metabolic process DNA modification defense response to other organism response to stress macromolecule modification metabolic process cellular process response to external biotic stimulus macromolecule metabolic process	-

Chains	Accession	Name	Type
A, B, C, D	IPR041409	Restriction endonuclease AspBHI, N-terminal	Domain
A, B, C, D	IPR011856	tRNA endonuclease-like domain superfamily	Homologous Superfamily
A, B, C, D	IPR007560	Restriction endonuclease type IV, Mrr	Domain