Annotations: 2IXS

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	BsuBI_PstI_RE_N	e2ixsB2	A: alpha arrays	X: HTH	H: HTH	T: winged	F: BsuBI_PstI_RE_N	ECOD (1.6)
B	BsuBI_PstI_RE_C	e2ixsB1	A: a/b three-layered sandwiches	X: Restriction endonuclease-like	H: Restriction endonuclease-like (From Topology)	T: Restriction endonuclease-like	F: BsuBI_PstI_RE_C	ECOD (1.6)
A	BsuBI_PstI_RE_N	e2ixsA1	A: alpha arrays	X: HTH	H: HTH	T: winged	F: BsuBI_PstI_RE_N	ECOD (1.6)
A	BsuBI_PstI_RE_C	e2ixsA2	A: a/b three-layered sandwiches	X: Restriction endonuclease-like	H: Restriction endonuclease-like (From Topology)	T: Restriction endonuclease-like	F: BsuBI_PstI_RE_C	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	1.10.10.1820	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	BsuBI/PstI restriction endonuclease, N-terminal domain	CATH (4.3.0)
B	3.40.1350.80	Alpha Beta	3-Layer(aba) Sandwich	Trna Endonuclease	Chain: A, domain 1	CATH (4.3.0)
A	1.10.10.1820	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	BsuBI/PstI restriction endonuclease, N-terminal domain	CATH (4.3.0)
A	3.40.1350.80	Alpha Beta	3-Layer(aba) Sandwich	Trna Endonuclease	Chain: A, domain 1	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	SDAI RESTRICTION ENDONUCLEASE	cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding DNA binding nucleic acid binding endonuclease activity catalytic activity, acting on a nucleic acid hydrolase activity DNA nuclease activity type II site-specific deoxyribonuclease activity restriction endodeoxyribonuclease activity cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding DNA binding nucleic acid binding endonuclease activity catalytic activity, acting on a nucleic acid hydrolase activity DNA nuclease activity type II site-specific deoxyribonuclease activity restriction endodeoxyribonuclease activity DNA endonuclease activity hydrolase activity, acting on ester bonds catalytic activity, acting on DNA nuclease activity DNA endonuclease activity, producing 5'-phosphomonoesters catalytic activity	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	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR041963	BsuBI/PstI restriction endonuclease, C-terminal domain superfamily	Homologous Superfamily
A, B	IPR009528	BsuBI/PstI restriction endonuclease domain	Domain
A, B	IPR041454	BsuBI/PstI restriction endonuclease, HTH domain	Domain
A, B	IPR041962	BsuBI/PstI restriction endonuclease, N-terminal domain 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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.