Annotations: 5UI5

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
C [auth I]	SCOP2B Superfamily	Sigma factor domain-like	8092902	3000953	SCOP2B (2022-06-29)
C [auth I]	SCOP2B Superfamily	Sigma factor domain-like	8092901	3000953	SCOP2B (2022-06-29)
C [auth I]	SCOP2B Superfamily	Sigma factor domain-like	8092895	3000953	SCOP2B (2022-06-29)
F [auth V]	SCOP2B Superfamily	Sigma factor domain-like	8092902	3000953	SCOP2B (2022-06-29)
F [auth V]	SCOP2B Superfamily	Sigma factor domain-like	8092901	3000953	SCOP2B (2022-06-29)
F [auth V]	SCOP2B Superfamily	Sigma factor domain-like	8092895	3000953	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)
C [auth I]	Sigma54_DBD_N	e5ui5I3	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: Sigma54_DBD_N	ECOD (1.6)
C [auth I]	Sigma54_DBD_C	e5ui5I2	A: alpha arrays	X: HTH	H: HTH	T: winged	F: Sigma54_DBD_C	ECOD (1.6)
C [auth I]	Sigma54_CBD	e5ui5I1	A: alpha arrays	X: HTH	H: HTH	T: Sigma54 core-binding domain	F: Sigma54_CBD	ECOD (1.6)
F [auth V]	Sigma54_DBD_N	e5ui5V3	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: Sigma54_DBD_N	ECOD (1.6)
F [auth V]	Sigma54_DBD_C	e5ui5V2	A: alpha arrays	X: HTH	H: HTH	T: winged	F: Sigma54_DBD_C	ECOD (1.6)
F [auth V]	Sigma54_CBD	e5ui5V1	A: alpha arrays	X: HTH	H: HTH	T: Sigma54 core-binding domain	F: Sigma54_CBD	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C [auth I]	1.10.10.1330	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	RNA polymerase sigma-54 factor, core-binding domain	CATH (4.3.0)
C [auth I]	1.10.10.60	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Homeodomain-like	CATH (4.3.0)
F [auth V]	1.10.10.1330	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	RNA polymerase sigma-54 factor, core-binding domain	CATH (4.3.0)
F [auth V]	1.10.10.60	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Homeodomain-like	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
C [auth I], F [auth V]	PF04552	Sigma-54, DNA binding domain (Sigma54_DBD)	Sigma-54, DNA binding domain	This DNA binding domain is based on peptide fragmentation data. This domain is proximal to DNA in the promoter/holoenzyme complex. Furthermore this region contains a putative helix-turn-helix motif. At the C-terminus, there is a highly conserved r ...	This DNA binding domain is based on peptide fragmentation data. This domain is proximal to DNA in the promoter/holoenzyme complex. Furthermore this region contains a putative helix-turn-helix motif. At the C-terminus, there is a highly conserved region known as the RpoN box and is the signature of the sigma-54 proteins [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, D [auth N]	DNA (31-MER)	-	-	-
B, E [auth O]	DNA (30-MER)	-	-	-
C [auth I], F [auth V]	RNA polymerase sigma factor RpoN	DNA binding binding organic cyclic compound binding nucleic acid binding transcription regulator activity DNA-binding transcription factor activity DNA-binding transcription activator activity transferase activity nucleotidyltransferase activity catalytic activity transferase activity, transferring phosphorus-containing groups sigma factor activity	cellular biosynthetic process cellular metabolic process RNA metabolic process primary metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process DNA-templated transcription initiation nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process biosynthetic process cellular biosynthetic process cellular metabolic process RNA metabolic process primary metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process DNA-templated transcription initiation nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process biosynthetic process metabolic process cellular process macromolecule metabolic process	transferase complex, transferring phosphorus-containing groups protein-containing complex catalytic complex RNA polymerase complex DNA-directed RNA polymerase complex transferase complex intracellular protein-containing complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C [auth I], F [auth V]	IPR038709	RNA polymerase sigma-54 factor, core-binding domain superfamily	Homologous Superfamily
C [auth I], F [auth V]	IPR000394	RNA polymerase sigma factor 54	Family
C [auth I], F [auth V]	IPR007046	RNA polymerase sigma factor 54, core-binding domain	Domain
C [auth I], F [auth V]	IPR007634	RNA polymerase sigma factor 54, DNA-binding	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 R01GM133198.