Pathways Involved in Reductant Distribution during Photobiological H2 Production by Rhodobacter sphaeroides

We used global transcript analyses and mutant studies to investigate the pathways that impact H-2 production in the photosynthetic bacterium Rhodobacter sphaeroides. We found that H-2 production capacity is related to the levels of expression of the nitrogenase and hydrogenase enzymes and the enzymes of the Calvin-Benson-Bassham pathway.