Annotations: 4CHU

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	PemK_toxin	e4chuB1	A: beta barrels	X: HTH	H: Toll/Interleukin receptor TIR domain	T: Toll/Interleukin receptor TIR domain	F: PemK_toxin	ECOD (v294.2)
A	PemK_toxin	e4chuA1	A: beta barrels	X: HTH	H: Toll/Interleukin receptor TIR domain	T: Toll/Interleukin receptor TIR domain	F: PemK_toxin	ECOD (v294.2)

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
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)
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)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
D	HYA PROMOTER FRAGMENT	-	-	-
C	HYA PROMOTER FRAGMENT	-	-	-
A, B	HTH-TYPE TRANSCRIPTIONAL REGULATOR ISCR	DNA binding double-stranded DNA binding binding nucleic acid binding iron-sulfur cluster binding 2 iron, 2 sulfur cluster binding metal cluster binding small molecule binding transcription regulator activity DNA-binding transcription factor activity cation binding transition metal ion binding iron ion binding ion binding DNA binding double-stranded DNA binding binding nucleic acid binding iron-sulfur cluster binding 2 iron, 2 sulfur cluster binding metal cluster binding small molecule binding transcription regulator activity DNA-binding transcription factor activity cation binding transition metal ion binding iron ion binding ion binding metal ion binding	-	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol

Chains	Accession	Name	Type
A, B	IPR010242	Transcription factor HTH, IscR	Family
A, B	IPR030489	Transcription regulator Rrf2-type, conserved site	Conserved Site
A, B	IPR036388	Winged helix-like DNA-binding domain superfamily	Homologous Superfamily
A, B	IPR000944	Transcription regulator Rrf2	Family
A, B	IPR036390	Winged helix DNA-binding domain superfamily	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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.

4CHU | pdb_00004chu