The bidirectional hydrogenase in the cyanobacterium Synechocystis sp strain PCC 6803

• Tipo: Artigo em Revista Científica Internacional
• Data: 2006

Autores

Antal, TK (Autor) Outra; Oliveira, P (Autor) Outra; Lindblad, P (Autor) Outra

Revista

Título: International Journal of Hydrogen Energy

Vol. 31 Nº 10

Páginas: 1439-1444

ISSN: 0360-3199

Editora: Elsevier

Indexação

ISI Web of Knowledge - 38 Citações

Scopus - 39 Citações

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6