7YCW

Crystal Form 1 of Truncated Antitoxin ParD (2-54,containg RHH domain) from Pseudoalteromonas rubra

External Resource: Annotation

Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A [auth C]	PF03693	e7ycwC1	A: alpha arrays	X: HTH	H: HTH	T: Ribbon-helix-helix	F: PF03693	ECOD (1.6)
B [auth D]	PF03693	e7ycwD1	A: alpha arrays	X: HTH	H: HTH	T: Ribbon-helix-helix	F: PF03693	ECOD (1.6)
C [auth A]	PF03693	e7ycwA1	A: alpha arrays	X: HTH	H: HTH	T: Ribbon-helix-helix	F: PF03693	ECOD (1.6)
D [auth B]	PF03693	e7ycwB1	A: alpha arrays	X: HTH	H: HTH	T: Ribbon-helix-helix	F: PF03693	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth C], B [auth D], C [auth A], D [auth B]	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 [auth C], B [auth D], C [auth A], D [auth B]	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 [auth C], B [auth D], C [auth A], D [auth B]	IPR022789	Antitoxin ParD	Family
A [auth C], B [auth D], C [auth A], D [auth B]	IPR038296	Antitoxin ParD superfamily	Homologous Superfamily
A [auth C], B [auth D], C [auth A], D [auth B]	IPR010985	Ribbon-helix-helix	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.