Annotations: 3KXE

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
C	SCOP2 Family	ParD antitoxin-like	8044732	4004105	SCOP2 (2022-06-29)
C	SCOP2 Superfamily	Ribbon-helix-helix	8052310	3000295	SCOP2 (2022-06-29)
D	SCOP2B Superfamily	Ribbon-helix-helix	8052310	3000295	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	ParE_toxin	e3kxeA1	A: a+b two layers	X: RelE-like	H: RelE-like (From Topology)	T: RelE-like	F: ParE_toxin	ECOD (1.6)
B	ParE_toxin	e3kxeB1	A: a+b two layers	X: RelE-like	H: RelE-like (From Topology)	T: RelE-like	F: ParE_toxin	ECOD (1.6)
C	ParD_antitoxin_N	e3kxeC2	A: alpha arrays	X: HTH	H: HTH	T: Ribbon-helix-helix	F: ParD_antitoxin_N	ECOD (1.6)
C	ParD_antitoxin_C	e3kxeC1	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)
D	ParD_antitoxin_N	e3kxeD2	A: alpha arrays	X: HTH	H: HTH	T: Ribbon-helix-helix	F: ParD_antitoxin_N	ECOD (1.6)
D	ParD_antitoxin_C	e3kxeD3	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)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.2310.20	Alpha Beta	2-Layer Sandwich	YaeB-like fold	RelE-like	CATH (4.3.0)
B	3.30.2310.20	Alpha Beta	2-Layer Sandwich	YaeB-like fold	RelE-like	CATH (4.3.0)
C	6.10.10.120	Special	Helix non-globular	Helicase, Ruva Protein	domain 3	CATH (4.3.0)
D	6.10.10.120	Special	Helix non-globular	Helicase, Ruva Protein	domain 3	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Toxin protein parE-1	-	protein-containing complex organization protein heterotetramerization cellular component organization cellular component biogenesis cellular component assembly protein complex oligomerization protein tetramerization protein-containing complex assembly cellular process cellular component organization or biogenesis protein heterooligomerization	-
C, D	Antitoxin protein parD-1	identical protein binding protein binding binding protein homodimerization activity protein dimerization activity	protein-containing complex organization protein heterotetramerization cellular component organization cellular component biogenesis cellular component assembly protein complex oligomerization protein tetramerization protein-containing complex assembly cellular process cellular component organization or biogenesis protein heterooligomerization regulation of cellular process RNA metabolic process regulation of primary metabolic process protein-containing complex organization protein heterotetramerization cellular component organization cellular component biogenesis cellular component assembly protein complex oligomerization protein tetramerization protein-containing complex assembly cellular process cellular component organization or biogenesis protein heterooligomerization regulation of cellular 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 regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of biosynthetic process regulation of biological process biological regulation primary metabolic process regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of gene expression biosynthetic process metabolic process regulation of macromolecule biosynthetic 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, B	IPR007712	Toxin-antitoxin system, RelE/ParE toxin family	Family
A, B	IPR051803	Type II TA system RelE-like toxin	Family
A, B	IPR028344	Toxin-antitoxin system, toxin component ParE1/4	Family
A, B	IPR035093	Toxin-antitoxin system, RelE/ParE toxin domain superfamily	Homologous Superfamily
C, D	IPR022789	Antitoxin ParD	Family
C, D	IPR038296	Antitoxin ParD superfamily	Homologous Superfamily
C, D	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 R01GM157729.