2IVH

Crystal structure of the nuclease domain of ColE7 (H545Q mutant) in complex with an 18-bp duplex DNA

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2ivha_	Alpha and beta proteins (a+b)	His-Me finger endonucleases	His-Me finger endonucleases	HNH-motif	automated matches	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	His-Me finger endonucleases	8043906	3001893	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	LHH	e2ivhA1	A: few secondary structure elements	X: His-Me finger endonucleases (From Homology)	H: His-Me finger endonucleases	T: His-Me finger endonucleases	F: LHH	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.90.540.10	Alpha Beta	Alpha-Beta Complex	Colicin E7 immunity protein	Chain B, fragment: Endonuclease domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF21431	Colicin/Pyocin-S2, DNase domain (Col-Pyo_DNase)	Colicin/Pyocin-S2, DNase domain	This entry represents the DNAse domain from colicin/pyocin bacteriocins, such as pyocin-S2 from Pseudomonas aeruginosa and colicin E7/E9 from E. coli. This domain has an alpha/beta fold containing a Zn2+ ion binding site [1-5].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	COLCIN-E7	endonuclease activity nuclease activity hydrolase activity, acting on ester bonds hydrolase activity catalytic activity cation binding ion binding binding metal ion binding small molecule binding	biological process involved in interspecies interaction between organisms response to stimulus response to other organism defense response response to external stimulus response to biotic stimulus defense response to bacterium defense response to other organism response to stress response to bacterium response to external biotic stimulus cellular process disruption of cell in another organism disruption of anatomical structure in another organism biological process involved in interspecies interaction between organisms response to stimulus response to other organism defense response response to external stimulus response to biotic stimulus defense response to bacterium defense response to other organism response to stress response to bacterium response to external biotic stimulus cellular process disruption of cell in another organism disruption of anatomical structure in another organism killing of cells of another organism cell killing	intracellular anatomical structure cellular anatomical structure extrachromosomal circular DNA extrachromosomal DNA
B, C	5'-D(GPGPAPAPTPTPCPGPAPTP CPGPAPAPTPTPCPC)-3'	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR024575	Cloacin/colicin	Family
A	IPR024566	Colicin, receptor domain	Domain
A	IPR016128	Pyosin/cloacin translocation domain	Domain
A	IPR036302	Pyosin/cloacin translocation domain superfamily	Homologous Superfamily
A	IPR037146	Colicin/pyocin, DNase domain superfamily	Homologous Superfamily
A	IPR044925	His-Me finger superfamily	Homologous Superfamily
A	IPR003615	HNH nuclease	Domain

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.