Annotations: 5X3T

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF01402	e5x3tA1	A: alpha arrays	X: HTH	H: HTH	T: Ribbon-helix-helix	F: PF01402	ECOD (1.6)
B [auth C]	PF01402	e5x3tC1	A: alpha arrays	X: HTH	H: HTH	T: Ribbon-helix-helix	F: PF01402	ECOD (1.6)
C [auth E]	PF01402	e5x3tE1	A: alpha arrays	X: HTH	H: HTH	T: Ribbon-helix-helix	F: PF01402	ECOD (1.6)
D [auth G]	PF01402	e5x3tG1	A: alpha arrays	X: HTH	H: HTH	T: Ribbon-helix-helix	F: PF01402	ECOD (1.6)
E [auth B]	PF01850	e5x3tB1	A: a/b three-layered sandwiches	X: HAD domain-like	H: HAD domain-related	T: PIN domain-like	F: PF01850	ECOD (1.6)
F [auth D]	PF01850	e5x3tD1	A: a/b three-layered sandwiches	X: HAD domain-like	H: HAD domain-related	T: PIN domain-like	F: PF01850	ECOD (1.6)
G [auth F]	PF01850	e5x3tF1	A: a/b three-layered sandwiches	X: HAD domain-like	H: HAD domain-related	T: PIN domain-like	F: PF01850	ECOD (1.6)
H	PF01850	e5x3tH1	A: a/b three-layered sandwiches	X: HAD domain-like	H: HAD domain-related	T: PIN domain-like	F: PF01850	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B [auth C], C [auth E], D [auth G]	PF01402	Ribbon-helix-helix protein, copG family (RHH_1)	Ribbon-helix-helix protein, copG family	The structure of this protein repressor, which is the shortest reported to date and the first isolated from a plasmid, has a homodimeric ribbon-helix-helix arrangement [2]. The helix-turn-helix-like structure is involved in dimerisation and not DNA b ...	The structure of this protein repressor, which is the shortest reported to date and the first isolated from a plasmid, has a homodimeric ribbon-helix-helix arrangement [2]. The helix-turn-helix-like structure is involved in dimerisation and not DNA binding as might have been expected [2].	Domain
E [auth B], F [auth D], G [auth F], H	PF01850	PIN domain (PIN)	PIN domain	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B [auth C], C [auth E], D [auth G]	Antitoxin VapB26	-	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 positive regulation of growth regulation of growth positive regulation of biological process growth	-
E [auth B], F [auth D], G [auth F], H	Ribonuclease VapC26	cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding nuclease activity hydrolase activity, acting on ester bonds catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid RNA nuclease activity hydrolase activity catalytic activity	regulation of biological process regulation of growth negative regulation of growth negative regulation of biological process biological regulation growth	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B [auth C], C [auth E], D [auth G]	IPR010985	Ribbon-helix-helix	Homologous Superfamily
A, B [auth C], C [auth E], D [auth G]	IPR002145	Ribbon-helix-helix protein, CopG	Domain
E [auth B], F [auth D], G [auth F], H	IPR002716	PIN domain	Domain
E [auth B], F [auth D], G [auth F], H	IPR029060	PIN-like domain superfamily	Homologous Superfamily
E [auth B], F [auth D], G [auth F], H	IPR022907	VapC family	Family

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.