Annotations: 4I2O

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	HSP90,HATPase_c_3	e4i2oA1	A: beta barrels	X: LidA	H: LidA	T: LidA	F: HSP90,HATPase_c_3	ECOD (v294.2)
B	YonK	e4i2oB2	A: beta barrels	X: DP domain	H: DP domain	T: DP domain	F: YonK	ECOD (v294.2)
B	HisKA	e4i2oB3	A: beta barrels	X: Thioredoxin-like	H: ClpP/crotonase	T: ClpP/crotonase	F: HisKA	ECOD (v294.2)

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.120.10	Mainly Beta	Sandwich	Jelly Rolls	Jelly Rolls	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)
B	2.60.120.10	Mainly Beta	Sandwich	Jelly Rolls	Jelly Rolls	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)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
D [auth X]	Promoter of fixK2 direct target, fixN, downstream	-	-	-
C [auth W]	Promoter of fixK2 direct target, fixN, upstream	-	-	-
A, B	FixK2 protein	DNA binding binding nucleic acid binding transcription regulator activity DNA-binding transcription factor activity	-	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol

Chains	Accession	Name	Type
A, B	IPR050397	Global Transcriptional Regulators in Environmental Response	Family
A, B	IPR000595	Cyclic nucleotide-binding domain	Domain
A, B	IPR018490	Cyclic nucleotide-binding domain superfamily	Homologous Superfamily
A, B	IPR036388	Winged helix-like DNA-binding domain superfamily	Homologous Superfamily
A, B	IPR036390	Winged helix DNA-binding domain superfamily	Homologous Superfamily
A, B	IPR012318	Crp-type HTH domain	Domain
A, B	IPR014710	RmlC-like jelly roll fold	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.

4I2O | pdb_00004i2o