Annotations: 7R5A

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2 Family	ParD antitoxin-like	8107275	4004105	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	Ribbon-helix-helix	8107276	3000295	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	ParE_toxin	e7r5aA1	A: a+b two layers	X: RelE-like	H: RelE-like (From Topology)	T: RelE-like	F: ParE_toxin	ECOD (1.6)
B	ParD_antitoxin_N	e7r5aB1	A: alpha arrays	X: HTH	H: HTH	T: Ribbon-helix-helix	F: ParD_antitoxin_N	ECOD (1.6)
B	ParD_antitoxin_C	e7r5aB2	A: extended segments	X: ParE2-associated antitoxin 2 (PaaA2) (From Topology)	H: ParE2-associated antitoxin 2 (PaaA2) (From Topology)	T: ParE2-associated antitoxin 2 (PaaA2)	F: ParD_antitoxin_C	ECOD (1.6)
C	ParD_antitoxin_N	e7r5aC1	A: alpha arrays	X: HTH	H: HTH	T: Ribbon-helix-helix	F: ParD_antitoxin_N	ECOD (1.6)
D	ParD_antitoxin_N	e7r5aD1	A: alpha arrays	X: HTH	H: HTH	T: Ribbon-helix-helix	F: ParD_antitoxin_N	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF05016	ParE toxin of type II toxin-antitoxin system, parDE (ParE_toxin)	ParE toxin of type II toxin-antitoxin system, parDE	ParE is the toxin family of a type II toxin-antitoxin family. It is toxic towards DNA gyrase, but is neutralised by the antitoxin ParD. The family also encompasses RelE/ParE described in [2].	Domain
B, C, D	PF03693	Bacterial antitoxin of ParD toxin-antitoxin type II system and RHH (ParD_antitoxin)	Bacterial antitoxin of ParD toxin-antitoxin type II system and RHH	ParD is the antitoxin of a bacterial toxin-antitoxin gene pair. The cognate toxin is ParE in, Pfam:PF05016. The family contains several related antitoxins from Cyanobacteria, Proteobacteria and Actinobacteria. Antitoxins of this class carry an N-ter ...	ParD is the antitoxin of a bacterial toxin-antitoxin gene pair. The cognate toxin is ParE in, Pfam:PF05016. The family contains several related antitoxins from Cyanobacteria, Proteobacteria and Actinobacteria. Antitoxins of this class carry an N-terminal ribbon-helix-helix domain, RHH, that is highly conserved across all type II bacterial antitoxins, which dimerises with the RHH domain of a second VapB molecule. A hinge section follows the RHH, with an additional pair of flexible alpha helices at the C-terminus. This C-terminus is the toxin-binding region of the dimer, and so is specific to the cognate toxin, whereas the RHH domain has the specific function of lying across the RNA-binding groove of the toxin dimer and inactivating the active-site - a more general function of all type II antitoxins.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Toxin	-	-	-
B, C, D	Antitoxin ParD	-	regulation of cellular process cellular biosynthetic process RNA metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process organic substance metabolic process organic substance biosynthetic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of biosynthetic process regulation of cellular process cellular biosynthetic process RNA metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process organic substance metabolic process organic substance biosynthetic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of biosynthetic process regulation of biological process cellular metabolic process biological regulation primary metabolic process regulation of cellular metabolic process regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of cellular biosynthetic process organic cyclic compound metabolic process regulation of gene expression biosynthetic process organic cyclic compound biosynthetic process metabolic process regulation of macromolecule biosynthetic process cellular process regulation of DNA-templated transcription macromolecule metabolic process regulation of metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR007712	Toxin-antitoxin system, RelE/ParE toxin family	Family
A	IPR028344	Toxin-antitoxin system, toxin component ParE1/4	Family
A	IPR035093	Toxin-antitoxin system, RelE/ParE toxin domain superfamily	Homologous Superfamily
B, C, D	IPR022789	Antitoxin ParD	Family
B, C, D	IPR038296	Antitoxin ParD superfamily	Homologous Superfamily
B, C, D	IPR010985	Ribbon-helix-helix	Homologous Superfamily

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.