Annotations: 1GXP

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1gxpa_	All alpha proteins	DNA/RNA-binding 3-helical bundle	C-terminal effector domain of the bipartite response regulators	PhoB-like	PhoB	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
B	d1gxpb_	All alpha proteins	DNA/RNA-binding 3-helical bundle	C-terminal effector domain of the bipartite response regulators	PhoB-like	PhoB	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
E	d1gxpe_	All alpha proteins	DNA/RNA-binding 3-helical bundle	C-terminal effector domain of the bipartite response regulators	PhoB-like	PhoB	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
F	d1gxpf_	All alpha proteins	DNA/RNA-binding 3-helical bundle	C-terminal effector domain of the bipartite response regulators	PhoB-like	PhoB	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	C-terminal effector domain of the bipartite response regulators	8039254	3001179	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	C-terminal effector domain of the bipartite response regulators	8039254	3001179	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	C-terminal effector domain of the bipartite response regulators	8039254	3001179	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	C-terminal effector domain of the bipartite response regulators	8039254	3001179	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	Trans_reg_C	e1gxpA1	A: alpha arrays	X: HTH	H: HTH	T: winged	F: Trans_reg_C	ECOD (1.6)
B	Trans_reg_C	e1gxpB1	A: alpha arrays	X: HTH	H: HTH	T: winged	F: Trans_reg_C	ECOD (1.6)
E	Trans_reg_C	e1gxpE1	A: alpha arrays	X: HTH	H: HTH	T: winged	F: Trans_reg_C	ECOD (1.6)
F	Trans_reg_C	e1gxpF1	A: alpha arrays	X: HTH	H: HTH	T: winged	F: Trans_reg_C	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.10.10	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain	CATH (4.3.0)
B	1.10.10.10	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain	CATH (4.3.0)
E	1.10.10.10	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain	CATH (4.3.0)
F	1.10.10.10	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, E, F	PF00486	Transcriptional regulatory protein, C terminal (Trans_reg_C)	Transcriptional regulatory protein, C terminal		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, E, F	PHOSPHATE REGULON TRANSCRIPTIONAL REGULATORY PROTEIN	DNA binding sequence-specific DNA binding sequence-specific double-stranded DNA binding transcription cis-regulatory region binding binding double-stranded DNA binding nucleic acid binding transcription regulatory region nucleic acid binding basal transcription machinery binding protein binding bacterial-type RNA polymerase holo enzyme binding molecular transducer activity phosphorelay response regulator activity identical protein binding	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 DNA-templated transcription initiation 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 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 DNA-templated transcription initiation 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 DNA-templated transcription initiation 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 localization transport phosphate ion transport establishment of localization inorganic anion transport	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol protein-containing complex protein-DNA complex
C, G	5'-D(GPAPGPCPTPGPTPCPAPTP* APAPAPGPTPTPGPTPCPAPCPGPG)-3'	-	-	-
D, H	5'-D(CPCPCPGPTPGPAPCPAPAP* CPTPTPTPAPTPGPAPCPAPGPCPT)-3'	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, E, F	IPR039420	Transcriptional regulatory protein WalR-like	Family
A, B, E, F	IPR001867	OmpR/PhoB-type DNA-binding domain	Domain
A, B, E, F	IPR011006	CheY-like superfamily	Homologous Superfamily
A, B, E, F	IPR001789	Signal transduction response regulator, receiver domain	Domain
A, B, E, F	IPR036388	Winged helix-like DNA-binding domain superfamily	Homologous Superfamily
A, B, E, F	IPR011879	Signal transduction response regulator, phosphate regulon transcriptional regulatory protein PhoB	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 R01GM157729.