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Microbiology and Molecular Biology Reviews, March 2002, p. 1-20, Vol. 66, No. 1
1092-2172/02/$04.00+0     DOI: 10.1128/MMBR.66.1.1-20.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.

Hydrogenases and Hydrogen Metabolism of Cyanobacteria

Paula Tamagnini,1,2 Rikard Axelsson,3 Pia Lindberg,3 Fredrik Oxelfelt,2 Röbbe Wünschiers,3 and Peter Lindblad3*

Department of Botany1,1 and Institute for Molecular and Cell Biology,2 University of Porto, 4150-180 Porto, Portugal, and,2 Department of Physiological Botany, EBC, Uppsala University, SE-752 36 Uppsala, Sweden33

Summary: Cyanobacteria may possess several enzymes that are directly involved in dihydrogen metabolism: nitrogenase(s) catalyzing the production of hydrogen concomitantly with the reduction of dinitrogen to ammonia, an uptake hydrogenase (encoded by hupSL) catalyzing the consumption of hydrogen produced by the nitrogenase, and a bidirectional hydrogenase (encoded by hoxFUYH) which has the capacity to both take up and produce hydrogen. This review summarizes our knowledge about cyanobacterial hydrogenases, focusing on recent progress since the first molecular information was published in 1995. It presents the molecular knowledge about cyanobacterial hupSL and hoxFUYH, their corresponding gene products, and their accessory genes before finishing with an applied aspect—the use of cyanobacteria in a biological, renewable production of the future energy carrier molecular hydrogen. In addition to scientific publications, information from three cyanobacterial genomes, the unicellular Synechocystis strain PCC 6803 and the filamentous heterocystous Anabaena strain PCC 7120 and Nostoc punctiforme (PCC 73102/ATCC 29133) is included.


* Corresponding author. Mailing address: Department of Physiological Botany, EBC, Uppsala University, Villavägen 6, SE-752 36 Uppsala, Sweden. Phone and fax: 46-18-471-28-26. E-mail: peter.lindblad{at}ebc.uu.se.


Microbiology and Molecular Biology Reviews, March 2002, p. 1-20, Vol. 66, No. 1
1092-2172/02/$04.00+0     DOI: 10.1128/MMBR.66.1.1-20.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.




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