ISSN:
1573-6776
Source:
Springer Online Journal Archives 1860-2000
Topics:
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Abstract In the absence of an external substrate, H 2 was evolved in Rhodovulum sulfidophilum under light-anaerobic conditions, along with degradation of poly(3-hydroxybutyrate) (PHB). Cells grown with succinate as a sole carbon source accumulated only a small amount of PHB compared with that in cells grown with a multiple substrate consisting of a mixture of four organic acids. Unlike PHB-containing cells, PHB-deficient cells did not evolve H in the absence of an external substrate. Nitrogenase activity was expressed while no hydrogenase activity was detected during the incubation of PHB-containing cells. These results suggest that intracellular PHB serves as a substrate for the H evolution catalyzed by nitrogenase when an external substrate is lacking.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1018437921006
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