This group studies how organisms sense environmental signals and transduce the signals into changes in gene expression and cell physiology. The group has continued their characterization of the two regulators central to the Escherichia coli response to oxidative stress: OxyR, a 34 kDa transcriptional regulator whose activity is modulated by oxidation and reduction, and OxyS, a novel 109 nucleotide RNA that acts as an activator and repressor of gene expression. In addition to studying the mechanism of OxyS RNA action, the group has begun to characterize the functions of other small, untranslated RNAs in E. coli. The group recently discovered that the 6S RNA associates with and modulates RNA polymerase. The group also has carried out genetic screens and whole genome expression analysis to determine what regulators are important to the Saccharomyces cerevisiae response to hydrogen peroxide.

Project Start
Project End
Budget Start
Budget End
Support Year
9
Fiscal Year
2000
Total Cost
Indirect Cost
Name
U.S. National Inst/Child Hlth/Human Dev
Department
Type
DUNS #
City
State
Country
United States
Zip Code
Hemm, Matthew R; Paul, Brian J; Schneider, Thomas D et al. (2008) Small membrane proteins found by comparative genomics and ribosome binding site models. Mol Microbiol 70:1487-501
Kawano, Mitsuoki; Aravind, L; Storz, Gisela (2007) An antisense RNA controls synthesis of an SOS-induced toxin evolved from an antitoxin. Mol Microbiol 64:738-54
Storz, G; Opdyke, J A; Wassarman, K M (2006) Regulating bacterial transcription with small RNAs. Cold Spring Harb Symp Quant Biol 71:269-73
Wang, Xunde; Mukhopadhyay, Partha; Wood, Matthew J et al. (2006) Mutational analysis to define an activating region on the redox-sensitive transcriptional regulator OxyR. J Bacteriol 188:8335-42
Tjaden, Brian; Goodwin, Sarah S; Opdyke, Jason A et al. (2006) Target prediction for small, noncoding RNAs in bacteria. Nucleic Acids Res 34:2791-802
Hu, Zonglin; Zhang, Aixia; Storz, Gisela et al. (2006) An antibody-based microarray assay for small RNA detection. Nucleic Acids Res 34:e52
Storz, Gisela; Altuvia, Shoshy; Wassarman, Karen M (2005) An abundance of RNA regulators. Annu Rev Biochem 74:199-217
Kawano, Mitsuoki; Reynolds, April A; Miranda-Rios, Juan et al. (2005) Detection of 5'- and 3'-UTR-derived small RNAs and cis-encoded antisense RNAs in Escherichia coli. Nucleic Acids Res 33:1040-50
Kawano, Mitsuoki; Storz, Gisela; Rao, B Sridhar et al. (2005) Detection of low-level promoter activity within open reading frame sequences of Escherichia coli. Nucleic Acids Res 33:6268-76
Wood, Matthew J; Storz, Gisela (2005) Oxygen, metabolism, and gene expression: the T-Rex connection. Structure 13:2-4

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