» Articles » PMID: 11333217

Comparative Gene Expression Profiles Following UV Exposure in Wild-type and SOS-deficient Escherichia Coli

Overview
Journal Genetics
Specialty Genetics
Date 2001 May 3
PMID 11333217
Citations 387
Authors
Affiliations
Soon will be listed here.
Abstract

The SOS response in UV-irradiated Escherichia coli includes the upregulation of several dozen genes that are negatively regulated by the LexA repressor. Using DNA microarrays containing amplified DNA fragments from 95.5% of all open reading frames identified on the E. coli chromosome, we have examined the changes in gene expression following UV exposure in both wild-type cells and lexA1 mutants, which are unable to induce genes under LexA control. We report here the time courses of expression of the genes surrounding the 26 documented lexA-regulated regions on the E. coli chromosome. We observed 17 additional sites that responded in a lexA-dependent manner and a large number of genes that were upregulated in a lexA-independent manner although upregulation in this manner was generally not more than twofold. In addition, several transcripts were either downregulated or degraded following UV irradiation. These newly identified UV-responsive genes are discussed with respect to their possible roles in cellular recovery following exposure to UV irradiation.

Citing Articles

A bacterial expression cloning screen reveals single-stranded DNA-binding proteins as potent desicco-protectants.

Hibshman J, Clark-Hachtel C, Bloom K, Goldstein B Cell Rep. 2024; 43(11):114956.

PMID: 39531375 PMC: 11654893. DOI: 10.1016/j.celrep.2024.114956.


Protein aggregation is a consequence of the dormancy-inducing membrane toxin TisB in .

Leinberger F, Cassidy L, Edelmann D, Schmid N, Oberpaul M, Blumenkamp P mSystems. 2024; 9(11):e0106024.

PMID: 39377584 PMC: 11575346. DOI: 10.1128/msystems.01060-24.


SOS response: Activation, impact, and drug targets.

Cheng K, Sun Y, Yu H, Hu Y, He Y, Shen Y mLife. 2024; 3(3):343-366.

PMID: 39359682 PMC: 11442139. DOI: 10.1002/mlf2.12137.


Bacterial persisters: molecular mechanisms and therapeutic development.

Niu H, Gu J, Zhang Y Signal Transduct Target Ther. 2024; 9(1):174.

PMID: 39013893 PMC: 11252167. DOI: 10.1038/s41392-024-01866-5.


Escherichia coli DNA replication: the old model organism still holds many surprises.

Lazowski K, Woodgate R, Fijalkowska I FEMS Microbiol Rev. 2024; 48(4).

PMID: 38982189 PMC: 11253446. DOI: 10.1093/femsre/fuae018.


References
1.
Huisman O, Dari R . An inducible DNA replication-cell division coupling mechanism in E. coli. Nature. 1981; 290(5809):797-9. DOI: 10.1038/290797a0. View

2.
Iwasaki H, Nakata A, Walker G, Shinagawa H . The Escherichia coli polB gene, which encodes DNA polymerase II, is regulated by the SOS system. J Bacteriol. 1990; 172(11):6268-73. PMC: 526809. DOI: 10.1128/jb.172.11.6268-6273.1990. View

3.
Brent R, Ptashne M . Mechanism of action of the lexA gene product. Proc Natl Acad Sci U S A. 1981; 78(7):4204-8. PMC: 319757. DOI: 10.1073/pnas.78.7.4204. View

4.
Bagg A, Kenyon C, Walker G . Inducibility of a gene product required for UV and chemical mutagenesis in Escherichia coli. Proc Natl Acad Sci U S A. 1981; 78(9):5749-53. PMC: 348850. DOI: 10.1073/pnas.78.9.5749. View

5.
Casaregola S, Dari R, Huisman O . Quantitative evaluation of recA gene expression in Escherichia coli. Mol Gen Genet. 1982; 185(3):430-9. DOI: 10.1007/BF00334135. View