4G6U

CdiA-CT/CdiI toxin and immunity complex from Escherichia coli

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)
B	d4g6ub_	Alpha and beta proteins (a+b)	NMB0488-like	NMB0488-like	automated matches	automated matches	(Escherichia coli O157:H7 ) [TaxId: 83334 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2 Family	CdiI-like	8088866	4001823	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	CdiI-like	8088867	3000429	SCOP2 (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	EUF08008	e4g6uA1	A: alpha arrays	X: Helical domain in EC869 CdiA (From Topology)	H: Helical domain in EC869 CdiA (From Topology)	T: Helical domain in EC869 CdiA	F: EUF08008	ECOD (1.6)
A	CDI_toxin_EC869_like	e4g6uA2	A: a/b three-layered sandwiches	X: Restriction endonuclease-like	H: Restriction endonuclease-like (From Topology)	T: Restriction endonuclease-like	F: CDI_toxin_EC869_like	ECOD (1.6)
B	CdiI	e4g6uB1	A: a+b two layers	X: NMB0488-like (From Topology)	H: NMB0488-like (From Topology)	T: NMB0488-like	F: CdiI	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	6.10.140.1810	Special	Helix non-globular	Helix Hairpins		CATH (4.3.0)
A	3.40.1350.110	Alpha Beta	3-Layer(aba) Sandwich	Trna Endonuclease	Chain: A, domain 1	CATH (4.3.0)
B	3.40.1590.10	Alpha Beta	3-Layer(aba) Sandwich	NMB0488-like fold	NMB0488-like	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF21111	CDI toxin restriction endonuclease-like domain (CDI_toxin_EC869_like)	CDI toxin restriction endonuclease-like domain	Contact-dependent growth inhibition (CDI) systems encode polymorphic toxin/immunity proteins that mediate competition between neighbouring bacterial cells [1]. Despite sharing little sequence identity, the toxin domains are structurally similar and h ...	Contact-dependent growth inhibition (CDI) systems encode polymorphic toxin/immunity proteins that mediate competition between neighbouring bacterial cells [1]. Despite sharing little sequence identity, the toxin domains are structurally similar and have homology to endonucleases. The EC869 toxin is a Zn(2+)-dependent DNase capable of completely degrading the genomes of target cells [1].	Domain
A	PF21483	Toxin CdiA-like, helical domain (CdiA_helical)	Toxin CdiA-like, helical domain	This entry represents the helical domain of EC869 CdiA toxin, a toxin of the Contact-dependent growth inhibition (CDI) system [1]. EC869 appears to function as a Zn2+-dependent DNAse degrading the genome of target cells.	Domain
B	PF07262	CDI immunity protein (CdiI)	CDI immunity protein	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	EC869 CdiA-CT	endonuclease activity catalytic activity, acting on a nucleic acid endodeoxyribonuclease activity, producing 5'-phosphomonoesters hydrolase activity DNA nuclease activity DNA endonuclease activity deoxyribonuclease I 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 toxin activity	-	intracellular anatomical structure cytoplasm cellular anatomical entity
B	EC869 CdiI	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR048745	Toxin CdiA-like, helical domain	Domain
A	IPR006914	VENN motif-containing domain	Domain
A	IPR033799	CdiA toxin, EC869-like	Domain
B	IPR037891	Immunity protein Cdil-like superfamily	Homologous Superfamily
B	IPR009888	Immunity protein CdiI, Proteobacteria type	Family

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.