Annotations: 5X3T

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
H	Chloroa_b-bind	e5x3tH1	A: a/b three-layered sandwiches	X: HAD domain-like	H: The swivelling beta/beta/alpha domain	T: The swivelling beta/beta/alpha domain	F: Chloroa_b-bind	ECOD (v294.1)
G [auth F]	Chloroa_b-bind	e5x3tF1	A: a/b three-layered sandwiches	X: HAD domain-like	H: The swivelling beta/beta/alpha domain	T: The swivelling beta/beta/alpha domain	F: Chloroa_b-bind	ECOD (v294.1)
F [auth D]	Chloroa_b-bind	e5x3tD1	A: a/b three-layered sandwiches	X: HAD domain-like	H: The swivelling beta/beta/alpha domain	T: The swivelling beta/beta/alpha domain	F: Chloroa_b-bind	ECOD (v294.1)
E [auth B]	SMC_ScpA	e5x3tB1	A: a/b three-layered sandwiches	X: Beta domain of coronavirus spike glycoprotein	H: HAMP domain	T: Polymerase basic protein 2 cap-binding domain	F: SMC_ScpA	ECOD (v294.1)
A	SMC_ScpA	e5x3tA1	A: a/b three-layered sandwiches	X: Beta domain of coronavirus spike glycoprotein	H: HAMP domain	T: Polymerase basic protein 2 cap-binding domain	F: SMC_ScpA	ECOD (v294.1)
D [auth G]	Chloroa_b-bind	e5x3tG1	A: a/b three-layered sandwiches	X: HAD domain-like	H: The swivelling beta/beta/alpha domain	T: The swivelling beta/beta/alpha domain	F: Chloroa_b-bind	ECOD (v294.1)
C [auth E]	Chloroa_b-bind	e5x3tE1	A: a/b three-layered sandwiches	X: HAD domain-like	H: The swivelling beta/beta/alpha domain	T: The swivelling beta/beta/alpha domain	F: Chloroa_b-bind	ECOD (v294.1)
B [auth C]	Chloroa_b-bind	e5x3tC1	A: a/b three-layered sandwiches	X: HAD domain-like	H: The swivelling beta/beta/alpha domain	T: The swivelling beta/beta/alpha domain	F: Chloroa_b-bind	ECOD (v294.1)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
E [auth B], F [auth D], G [auth F], H	PF01850	PIN domain (PIN)	PIN domain		Domain
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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
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 hydrolase activity catalytic activity nuclease activity catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid RNA nuclease activity	regulation of biological process regulation of growth negative regulation of growth negative regulation of biological process biological regulation growth	-
A, B [auth C], C [auth E], D [auth G]	Antitoxin VapB26	-	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 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 cellular process metabolic process regulation of macromolecule biosynthetic process regulation of DNA-templated transcription macromolecule metabolic process regulation of metabolic process positive regulation of growth regulation of growth growth positive regulation of biological process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
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
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

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.