Annotations: 4ABT

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Restriction endonuclease-like	8044440	3000104	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Restriction endonuclease-like	8044440	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)
A	PF09015	e4abtA1	A: a/b three-layered sandwiches	X: Restriction endonuclease-like	H: Restriction endonuclease-like (From Topology)	T: Restriction endonuclease-like	F: PF09015	ECOD (1.6)
B	PF09015	e4abtB1	A: a/b three-layered sandwiches	X: Restriction endonuclease-like	H: Restriction endonuclease-like (From Topology)	T: Restriction endonuclease-like	F: PF09015	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.10010	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Type-2 restriction enzyme NgoMIV	CATH (4.3.0)
B	3.40.50.10010	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Type-2 restriction enzyme NgoMIV	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF09015	NgoMIV restriction enzyme (NgoMIV_restric)	NgoMIV restriction enzyme	Members of this family are prokaryotic DNA restriction enzymes, exhibiting an alpha/beta structure, with a central region comprising a mixed six-stranded beta-sheet with alpha-helices on each side. A long 'arm' protrudes out of the core of the domain ...	Members of this family are prokaryotic DNA restriction enzymes, exhibiting an alpha/beta structure, with a central region comprising a mixed six-stranded beta-sheet with alpha-helices on each side. A long 'arm' protrudes out of the core of the domain between strands beta2 and beta3 and is mainly involved in the tetramerisation interface of the protein. These restriction enzymes recognise the double-stranded sequence GCCGGC and cleave after G-1 [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C [auth E], D [auth G]	5'-D(TPGPCPGPCPCPGPGPCPGP*CP)-3'	-	-	-
A, B	TYPE-2 RESTRICTION ENZYME NGOMIV	cation binding ion binding binding metal ion binding small molecule binding endonuclease activity catalytic activity, acting on a nucleic acid endodeoxyribonuclease activity, producing 5'-phosphomonoesters hydrolase activity DNA nuclease activity type II site-specific deoxyribonuclease activity restriction endodeoxyribonuclease activity DNA endonuclease activity nuclease activity cation binding ion binding binding metal ion binding small molecule binding endonuclease activity catalytic activity, acting on a nucleic acid endodeoxyribonuclease activity, producing 5'-phosphomonoesters hydrolase activity DNA nuclease activity type II site-specific deoxyribonuclease activity restriction endodeoxyribonuclease activity DNA endonuclease activity nuclease activity hydrolase activity, acting on ester bonds catalytic activity, acting on DNA endonuclease activity, active with either ribo- or deoxyribonucleic acids and producing 5'-phosphomonoesters catalytic activity	biological process involved in interspecies interaction between organisms response to stimulus DNA restriction-modification system clearance of foreign intracellular nucleic acids response to biotic stimulus nucleobase-containing compound metabolic process DNA modification organic substance metabolic process response to stress response to external biotic stimulus response to other organism defense response defense response to symbiont response to external stimulus biological process involved in interspecies interaction between organisms response to stimulus DNA restriction-modification system clearance of foreign intracellular nucleic acids response to biotic stimulus nucleobase-containing compound metabolic process DNA modification organic substance metabolic process response to stress response to external biotic stimulus response to other organism defense response defense response to symbiont response to external stimulus primary metabolic process clearance of foreign intracellular DNA DNA metabolic process nucleic acid metabolic process organic cyclic compound metabolic process defense response to other organism macromolecule modification metabolic process macromolecule metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR015105	Type-2 restriction enzyme NgoMIV	Family
A, B	IPR037083	Type-2 restriction enzyme NgoMIV superfamily	Homologous Superfamily
A, B	IPR011335	Restriction endonuclease type II-like	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.