Abstract：
:Cyanobacteria have tremendous potential to produce clean, renewable fuel in the form of hydrogen gas derived from solar energy and water. Of the two cyanobacterial enzymes capable of evolving hydrogen gas (nitrogenase and the bidirectional hydrogenase), the hox-encoded bidirectional Ni-Fe hydrogenase has a high theoretical potential. The physiological role of this hydrogenase is a highly debated topic and is poorly understood relative to that of the nitrogenase. Here the structure, assembly, and expression of this enzyme, as well as its probable roles in metabolism, are discussed and analyzed to gain perspective on its physiological role. It is concluded that the bidirectional hydrogenase in cyanobacteria primarily functions as a redox regulator for maintaining a proper oxidation/reduction state in the cell. Recommendations for future research to test this hypothesis are discussed.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Carrieri D,Wawrousek K,Eckert C,Yu J,Maness PCdoi
10.1016/j.biortech.2011.03.103subject
Has Abstractpub_date
2011-09-01 00:00:00pages
8368-77issue
18eissn
0960-8524issn
1873-2976pii
S0960-8524(11)00462-7journal_volume
102pub_type
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