The response regulator RpaB binds the high light regulatory 1 sequence upstream of the high-light-inducible hliB gene from the cyanobacterium Synechocystis PCC 6803

Arch Microbiol. 2007 Apr;187(4):337-42. doi: 10.1007/s00203-007-0213-1. Epub 2007 Feb 10.


Cyanobacteria, like other photosynthetic organisms, respond to the potentially damaging effects of high-intensity light by regulating the expression of a variety of stress-responsive genes through regulatory mechanisms that remain poorly understood. The high light regulatory 1 (HLR1) sequence can be found upstream of many genes regulated by high-light (HL) stress in cyanobacteria. In this study, we identify the factor that binds the HLR1 upstream of the HL-inducible hliB gene in the cyanobacterium Synechocystis PCC 6803 as the RpaB (Slr0947) response regulator.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • 5' Flanking Region
  • Bacterial Proteins / metabolism*
  • Base Sequence
  • Gene Expression Regulation, Bacterial
  • Genes, Bacterial*
  • Light*
  • Molecular Sequence Data
  • Photosynthesis
  • Regulatory Elements, Transcriptional*
  • Synechocystis / genetics*
  • Synechocystis / metabolism*


  • Bacterial Proteins