The bidirectional hydrogenase in the cyanobacterium Synechocystis sp strain PCC 6803

• Type: Article in International Scientific Journal
• Date: 2006

Authors

Antal, TK (Author) Other; Oliveira, P (Author) Other; Lindblad, P (Author) Other

Journal

Title: International Journal of Hydrogen Energy

Vol. 31 No. 10

Pages: 1439-1444

ISSN: 0360-3199

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 38 Citations

Scopus - 39 Citations

Other information

Authenticus ID: P-00F-SCM

DOI: 10.1016/j.ijhydene.2006.06.037

Abstract (EN): Synechocystis sp. strain PCC 6803 is a fresh-water, unicellular, non-nitrogen fixing cyanobacterium, containing a single bidirectional hydrogenase. This cyanobacterial hydrogenase has been purified as a pentameric enzyme and the corresponding structural genes, hoxEFUYH, are clustered together with three open reading frames (ORFs) of unknown function(s). In the present work, we present and summarize recent results in the regulation of the Synechocystis hydrogenase (e.g. H-2 itself is able to stimulate H2 evolution, a mutant without the diaphorase part of the bidirectional hydrogenase may develop a photooxidative processes in the absence of any detectable hydrogenase activity, and a higher hox transcript level in cells facing nitrogen starvation), and suggest a hypothesis on the direct involvement of the transcriptional regulator LexA as a mediator of the redox-responsive regulation of hox gene expression in Synechocystis PCC 6803.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6