Journal article

Publication year: 2012

Pages: 75-80

Journal: Journal of Biotechnology

Volume number: 162

Issue number: 1

ISSN: 0168-1656

eISSN: 1873-4863

DOI Link: https://doi.org/10.1016/j.jbiotec.2012.06.016

Publisher: Elsevier

Abstract: 
Synechocystis sp. PCC 6803 is a model organism for the study of photosynthetic processes. Methods to genetically manipulate this bacterium are essential to investigate these processes and to evaluate potential biotechnological applications. We developed a vector for controllable expression of proteins using a platform for stable integration of the expression cassette into the genome. The respective gene is translationally fused to the promoter of the petJ gene encoding cytochrome C-553 that is repressed by copper. Maximal expression from this promoter is achieved under copper depletion, whereas normal copper concentrations in standard medium lead to low expression rates. We show here the application of this system for construction of a conditional knockout mutant for the ferrochelatase, which is an essential enzyme in heme biosynthesis. Using different amounts of copper in the medium we were able to control the amount of ferrochelatase in the cell resulting in a varying expression of the phenotype. (C) 2012 Elsevier B.V. All rights reserved.

Harvard Citation style: Kuchmina, E., Wallner, T., Kryazhov, S., Zinchenko, V. and Wilde, A. (2012) An expression system for regulated protein production in Synechocystis sp PCC 6803 and its application for construction of a conditional knockout of the ferrochelatase enzyme, Journal of Biotechnology, 162(1), pp. 75-80. https://doi.org/10.1016/j.jbiotec.2012.06.016

APA Citation style: Kuchmina, E., Wallner, T., Kryazhov, S., Zinchenko, V., & Wilde, A. (2012). An expression system for regulated protein production in Synechocystis sp PCC 6803 and its application for construction of a conditional knockout of the ferrochelatase enzyme. Journal of Biotechnology. 162(1), 75-80. https://doi.org/10.1016/j.jbiotec.2012.06.016