RegulonDB RegulonDB 10.8:Regulon Page
   

KdpE DNA-binding transcriptional activator

Synonyms: KdpE, KdpE-Pasp
Summary:
KdpE is a transcriptional regulator involved in the regulation of genes involved in a high-affinity potassium (K+) uptake system []. The genes of this system and their regulators are widely distributed among the Gram-negative and Gram-positive bacteria and archaea []. KdpE activates expression of the kdpFABC operon encoding the P-type ATPase KdpFABC, a high-affinity potassium transport system. KdpE belongs to the two-component system KdpD/KdpE [3]. The operon containing both genes, kdpE, encoding the response regulator, and kdpD, encoding the sensor kinase, is located next to and in the same direction as an operon (kdpFABC) regulated by KdpE [6]. It has been suggested that sometimes the genes of the two operons are transcribed in only one transcript [6].
Read more >


Transcription factor      
TF conformation(s):
Name Conformation Type TF-Effector Interaction Type Apo/Holo Conformation Evidence (Confirmed, Strong, Weak) References
KdpE Non-Functional   Apo nd nd
KdpE-Pasp Functional Covalent Holo [APPH], [HIFS], [IMP] [1], [2], [3]
Evolutionary Family: OmpR
Sensing class: External-Two-component systems
Connectivity class: Local Regulator
Gene name: kdpE
  Genome position: 721056-721733
  Length: 678 bp / 225 aa
Operon name: kdpDE
TU(s) encoding the TF:
Transcription unit        Promoter
kdpDE
 


Regulon       
Regulated gene(s) kdpA, kdpB, kdpC, kdpF
Multifun term(s) of regulated gene(s) MultiFun Term (List of genes associated to the multifun term)
The P-type ATPase (P-ATPase) Superfamily (4)
membrane (3)
Regulated operon(s) kdpFABC
First gene in the operon(s) kdpF
Simple and complex regulons KdpE
Simple and complex regulatory phrases Regulatory phrase (List of promoters regulated by the phrase)
[KdpE,+](1)


Transcription factor regulation    


Transcription factor binding sites (TFBSs) arrangements
      

  Functional conformation Function Promoter Sigma factor Central Rel-Pos Distance to first Gene Genes Sequence LeftPos RightPos Evidence (Confirmed, Strong, Weak) References
  KdpE-Pasp activator kdpFp Sigma70 -63.0 -91.0 kdpF, kdpA, kdpB, kdpC
cttttgccatTTTTATACTTTTTTTACAccccgcccgc
728904 728921 [APIORCISFBSCS], [BPP], [CV(GEA)], [CV(GEA)], [CV(GEA/GS)], [CV(GEA/GS)], [CV(GEA/SM)], [CV(GEA/SM/GS)], [CV(SM)], [GEA], [GS], [SM] [2], [4], [5]


Evolutionary conservation of regulatory elements    
     Note: Evolutionary conservation of regulatory interactions and promoters is limited to gammaproteobacteria.
Promoter-target gene evolutionary conservation


Evidence    

 [APPH] Assay of protein purified to homogeneity

 [HIFS] Human inference of function from sequence

 [IMP] Inferred from mutant phenotype

 [APIORCISFBSCS] A person inferred or reviewed a computer inference of sequence function based on similarity to a consensus sequence.

 [BPP] Binding of purified proteins

 [CV(GEA)] cross validation(GEA)

 [CV(GEA/GS)] cross validation(GEA/GS)

 [CV(GEA/SM)] cross validation(GEA/SM)

 [CV(GEA/SM/GS)] cross validation(GEA/SM/GS)

 [CV(SM)] cross validation(SM)

 [GEA] Gene expression analysis

 [GS] genomic SELEX

 [SM] Site mutation



Reference(s)    

 [1] Ballal A., Heermann R., Jung K., Gassel M., Apte K., Altendorf K., 2002, A chimeric Anabaena/ Escherichia coli KdpD protein (Anacoli KdpD) functionally interacts with E. coli KdpE and activates kdp expression in E. coli., Arch Microbiol 178(2):141-8

 [2] Sugiura A., Nakashima K., Tanaka K., Mizuno T., 1992, Clarification of the structural and functional features of the osmoregulated kdp operon of Escherichia coli., Mol Microbiol 6(13):1769-76

 [3] Walderhaug MO., Polarek JW., Voelkner P., Daniel JM., Hesse JE., Altendorf K., Epstein W., 1992, KdpD and KdpE, proteins that control expression of the kdpABC operon, are members of the two-component sensor-effector class of regulators., J Bacteriol 174(7):2152-9

 [4] Narayanan A., Paul LN., Tomar S., Patil DN., Kumar P., Yernool DA., 2012, Structure-function studies of DNA binding domain of response regulator KdpE reveals equal affinity interactions at DNA half-sites., PLoS One 7(1):e30102

 [5] Shimada T., Ogasawara H., Ishihama A., 2018, Single-target regulators form a minor group of transcription factors in Escherichia coli K-12., Nucleic Acids Res 46(8):3921-3936

 [6] Polarek JW., Williams G., Epstein W., 1992, The products of the kdpDE operon are required for expression of the Kdp ATPase of Escherichia coli., J Bacteriol 174(7):2145-51

 [7] Nakashima K., Sugiura A., Kanamaru K., Mizuno T., 1993, Signal transduction between the two regulatory components involved in the regulation of the kdpABC operon in Escherichia coli: phosphorylation-dependent functioning of the positive regulator, KdpE., Mol Microbiol 7(1):109-16

 [8] Heermann R., Weber A., Mayer B., Ott M., Hauser E., Gabriel G., Pirch T., Jung K., 2009, The universal stress protein UspC scaffolds the KdpD/KdpE signaling cascade of Escherichia coli under salt stress., J Mol Biol 386(1):134-48

 [9] Luttmann D., Heermann R., Zimmer B., Hillmann A., Rampp IS., Jung K., Gorke B., 2009, Stimulation of the potassium sensor KdpD kinase activity by interaction with the phosphotransferase protein IIA(Ntr) in Escherichia coli., Mol Microbiol 72(4):978-94

 [10] Hirakawa H., Nishino K., Hirata T., Yamaguchi A., 2003, Comprehensive studies of drug resistance mediated by overexpression of response regulators of two-component signal transduction systems in Escherichia coli., J Bacteriol 185(6):1851-6



RegulonDB