Universität zu Köln

Bothe, Hermann, Schmitz, Oliver, Yates, M. Geoffrey and Newton, William E. (2010). Nitrogen Fixation and Hydrogen Metabolism in Cyanobacteria. Microbiol. Mol. Biol. Rev., 74 (4). S. 529 - 552. WASHINGTON: AMER SOC MICROBIOLOGY. ISSN 1098-5557

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Abstract

This review summarizes recent aspects of (di) nitrogen fixation and (di) hydrogen metabolism, with emphasis on cyanobacteria. These organisms possess several types of the enzyme complexes catalyzing N-2 fixation and/or H-2 formation or oxidation, namely, two Mo nitrogenases, a V nitrogenase, and two hydrogenases. The two cyanobacterial Ni hydrogenases are differentiated as either uptake or bidirectional hydrogenases. The different forms of both the nitrogenases and hydrogenases are encoded by different sets of genes, and their organization on the chromosome can vary from one cyanobacterium to another. Factors regulating the expression of these genes are emerging from recent studies. New ideas on the potential physiological and ecological roles of nitrogenases and hydrogenases are presented. There is a renewed interest in exploiting cyanobacteria in solar energy conversion programs to generate H-2 as a source of combustible energy. To enhance the rates of H-2 production, the emphasis perhaps needs not to be on more efficient hydrogenases and nitrogenases or on the transfer of foreign enzymes into cyanobacteria. A likely better strategy is to exploit the use of radiant solar energy by the photosynthetic electron transport system to enhance the rates of H-2 formation and so improve the chances of utilizing cyanobacteria as a source for the generation of clean energy.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Bothe, Hermann UNSPECIFIED UNSPECIFIED UNSPECIFIED Schmitz, Oliver UNSPECIFIED UNSPECIFIED UNSPECIFIED Yates, M. Geoffrey UNSPECIFIED UNSPECIFIED UNSPECIFIED Newton, William E. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-491893
DOI:	10.1128/MMBR.00033-10
Journal or Publication Title:	Microbiol. Mol. Biol. Rev.
Volume:	74
Number:	4
Page Range:	S. 529 - 552
Date:	2010
Publisher:	AMER SOC MICROBIOLOGY
Place of Publication:	WASHINGTON
ISSN:	1098-5557
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language PYRUVATE-FERREDOXIN OXIDOREDUCTASE; ANABAENA-VARIABILIS ATCC-29413; VNF-ENCODED APODINITROGENASE; SYNECHOCYSTIS SP PCC-6803; DIAPHORASE SUBUNIT HOXU; 2 DISTINCT HYDROGENASES; SP PCC 6803; BIDIRECTIONAL HYDROGENASE; HETEROCYST DIFFERENTIATION; VEGETATIVE CELLS Multiple languages Microbiology Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/49189