Journal article

Publication year: 2012

Pages: e33791-

Journal: PLoS ONE

Volume number: 7

Issue number: 4

ISSN: 1932-6203

Open access status: Gold

DOI Link: https://doi.org/10.1371/journal.pone.0033791

Publisher: Public Library of Science

Abstract: 
Several regulators are controlling the formation of the photosynthetic apparatus in the facultatively photosynthetic bacterium Rhodobacter sphaeroides. Among the proteins affecting photosynthesis gene expression is the blue light photoreceptor cryptochrome CryB. This study addresses the effect of CryB on global gene expression. The data reveal that CryB does not only influence photosynthesis gene expression but also genes for the non-photosynthetic energy metabolism like citric acid cycle and oxidative phosphorylation. In addition several genes involved in RNA processing and in transcriptional regulation are affected by a cryB deletion. Although CryB was shown to undergo a photocycle it does not only affect gene expression in response to blue light illumination but also in response to singlet oxygen stress conditions. While there is a large overlap in these responses, some CryB-dependent effects are specific for blue-light or photooxidative stress. In addition to protein-coding genes some genes for sRNAs show CryB-dependent expression. These findings give new insight into the function of bacterial cryptochromes and demonstrate for the first time a function in the oxidative stress response.

Harvard Citation style: Fruhwirth, S., Teich, K. and Klug, G. (2012) Effects of the Cryptochrome CryB from Rhodobacter sphaeroides on Global Gene Expression in the Dark or Blue Light or in the Presence of Singlet Oxygen, PLoS ONE, 7(4), p. e33791. https://doi.org/10.1371/journal.pone.0033791

APA Citation style: Fruhwirth, S., Teich, K., & Klug, G. (2012). Effects of the Cryptochrome CryB from Rhodobacter sphaeroides on Global Gene Expression in the Dark or Blue Light or in the Presence of Singlet Oxygen. PLoS ONE. 7(4), e33791. https://doi.org/10.1371/journal.pone.0033791