RegulonDB RegulonDB 11.1: Operon Form

polB operon and associated TUs in Escherichia coli K-12 genome

Name: polB
This page displays every known transcription unit of this operon and their known regulation.

Transcription unit          
Name: polB
Synonym(s): dinA
Gene(s): polB   Genome Browser M3D Gene expression COLOMBOS
Note(s): The polB gene could be belong to the araBAD operon, because it was observed that the RNAP reads through the terminator downstream of araD Stringer AM,2014
Name: polBp
+1: 65803
Sigma Factor: Sigma70 Sigmulon
Distance from start of the gene: 23
Sequence: gggcagtaatgactgtataaaaccacagccaatcaaacgaaaccaggctatactcaagccTggttttttgatggattttca
                                -35                   -10   +1                   
Note(s): We assigned a putative transcription start site to this promoter based on the observation that the majority of the promoters, whose transcription start sites were determined experimentally, present a distance of 6 nucleotides between the transcription start site and the -10 box. Lewis LK,1992predicted a potential polB promoter site (-35 and -10 regions) using three different computational search programs.
Evidence: [COMP-AINF]
Reference(s): [1] Huerta AM., et al., 2003
[2] Lewis LK., et al., 1992
TF binding sites (TFBSs)
Type Transcription factor Function Promoter Binding Sites Growth Conditions Evidence Confidence level (C: Confirmed, S: Strong, W: Weak) Reference(s)
LeftPos RightPos Central Rel-Pos Sequence

RNA cis-regulatory element    
Regulation, transcriptional elongation  
Attenuator type: Translational
Strand: reverse
  Structure type Energy LeftPos RightPos Sequence (RNA-strand)
  terminator -15.7 65797 65825 ccaatcaaacGAAACCAGGCTATACTCAAGCCTGGTTTtttgatggat
Notes: "The provided "Sequence" is that of the RNA strand, i.e. U's are shown instead of T's and regulators on the reverse strand will appear as the reverse complement of the sequence delimited by LeftPos-RigtPos"