RegulonDB RegulonDB 11.0:Regulon Page

MatA DNA-binding transcriptional dual regulator

Synonyms: MatA
MatA is a LuxR-type transcription factor that is directly involved, as a positive regulator acting at transcriptional and posttranscriptional levels, in the expression of the mat operon in meningitis isolate strain IHE 3034 (T. A. Lehti, P. Bauchart, M. Kukkonen, U. Dobrindt, T. K. Korhonen, B. Westerlund-Wikström, unpublished results) [1]. On the other hand, MatA controls the expression of the flhDC operon, with higher affinity to flhDp, repressing flagellum biosynthesis, motility, and taxis [1]. The opposite regulatory actions of MatA on mat and on flhDC promoters advance the adaptation of E. coli from a planktonic to an adhesive lifestyle [1]. MatA binds more weakly to pfliA and to pfliC, and their levels are equal to those observed for matB [1]. MatA exerts a dual regulatory function on the choice of planktonic/sessile lifestyle and further supports the presence of antagonistic control of attachment and motility.
Read more >

Transcription factor      
TF conformation(s):
Name Conformation Type TF-Effector Interaction Type Apo/Holo Conformation Evidence (Confirmed, Strong, Weak) References
MatA Functional   nd nd
Evolutionary Family: LuxR/UhpA
TFBs symmetry: inverted-repeat
Connectivity class: Local Regulator
Gene name: matA
  Genome position: 310746-311336
  Length: 591 bp / 196 aa
Operon name: matA
TU(s) encoding the TF:
Transcription unit        Promoter

Regulated gene(s) ecpA, flhC, flhD, fliA, fliC, fliX, fliZ, matA, tcyJ
Multifun term(s) of regulated gene(s) MultiFun Term (List of genes associated to the multifun term)
motility, chemotaxis, energytaxis (aerotaxis, redoxtaxis etc) (4)
flagella (4)
flagellum (3)
Transcription related (3)
activator (2)
Read more >
Regulated operon(s) ecpA, flhDC, fliAZ-tcyJ, fliCX, matA
First gene in the operon(s) ecpA, matA, flhD, fliA, fliC
Simple and complex regulons AcrR,CRP,FliZ,Fur,H-NS,HdfR,IHF,LrhA,MatA,OmpR,QseB,RcsAB,YjjQ
Simple and complex regulatory phrases Regulatory phrase (List of promoters regulated by the phrase)

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
  MatA activator ecpAp Sigma70 nd nd ecpA nd nd [BPP] [1]
  MatA activator ecpRp Sigma24 nd nd matA nd nd [BPP] [1]
  MatA repressor flhDp Sigma70 nd nd flhD, flhC nd nd [GEA], [BPP] [1]
  MatA repressor flhDp2 Sigma54 nd nd flhD, flhC nd nd [GEA], [BPP] [1]
  MatA repressor fliAp1 Sigma70 nd nd fliA, fliZ, tcyJ nd nd [BPP] [1]
  MatA repressor fliCp Sigma28 nd nd fliC, fliX nd nd [BPP] [1]

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