Annotations: 4NTQ

CdiA-CT/CdiI toxin and immunity complex from Enterobacter cloacae

External Resource: Annotation

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: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	CdiI-like	8051338	4007315	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	ECL CdiI-like	8055790	3002312	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)
B	CdiI_N	e4ntqB1	A: beta barrels	X: ssDNA-binding transcriptional regulator domain-like	H: ssDNA-binding transcriptional regulator domain	T: ssDNA-binding transcriptional regulator domain	F: CdiI_N	ECOD (v294.2)
A	Ntox21	e4ntqA1	A: beta barrels	X: ssDNA-binding transcriptional regulator domain-like	H: ssDNA-binding transcriptional regulator domain	T: ssDNA-binding transcriptional regulator domain	F: Ntox21	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.30.2450.20	Alpha Beta	2-Layer Sandwich	Secreted effector protein pipB2 fold		CATH (4.3.0)
A	3.10.380.20	Alpha Beta	Roll	Ribonuclease domain of colicin e3 (Residues 456-551)	Novel toxin 21 (CdiA), C-terminal domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B	PF18228	CdiI N-terminal domain (CdiI_N)	CdiI N-terminal domain	This is the N-terminal domain of Contact-dependent growth inhibition immunity (CdiI) proteins present in Enterobacter cloacae. CdiI proteins neutralize CdiA-CT toxins to protect toxin-producing cells from auto-inhibition. Structural homology searches ...	This is the N-terminal domain of Contact-dependent growth inhibition immunity (CdiI) proteins present in Enterobacter cloacae. CdiI proteins neutralize CdiA-CT toxins to protect toxin-producing cells from auto-inhibition. Structural homology searches reveal that Enterobacter cloacae's CdiI is most similar to the Whirly family of single-stranded DNA-binding protein [1].	Domain
A	PF15526	Novel toxin 21 (Ntox21)	Novel toxin 21	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	ECL CdiI	-	-	-
A	Contact-dependent inhibitor A	endonuclease activity nuclease activity catalytic activity, acting on RNA RNA endonuclease activity catalytic activity, acting on a nucleic acid RNA nuclease activity catalytic activity hydrolase activity toxin activity	-	host cellular component host intracellular part cellular anatomical structure host cell cytoplasm host cell part host intracellular region other organism part

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B	IPR040509	CdiI, C-terminal	Domain
B	IPR053755	Contact-dependent growth inhibition immunity	Homologous Superfamily
B	IPR040509	CdiI, C-terminal	Domain
B	IPR053755	Contact-dependent growth inhibition immunity	Homologous Superfamily
A	IPR008638	Filamentous haemagglutinin FhaB/tRNA nuclease CdiA-like, TPS domain	Domain
A	IPR012334	Pectin lyase fold	Homologous Superfamily
A	IPR028190	Novel toxin 21	Domain
A	IPR006914	VENN motif-containing domain	Domain
A	IPR025157	Hemagglutinin repeat	Repeat
A	IPR038181	Novel toxin 21 superfamily	Homologous Superfamily
A	IPR010069	Toxin CdiA-like, Filamentous hemagglutinin motif repeats	Repeat
A	IPR011050	Pectin lyase fold/virulence factor	Homologous Superfamily

RCSB PDB is hosted by

RCSB PDB is a member of

RCSB Partners
Nucleic Acid Knowledgebase

CoreTrustSeal

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.