Electronic Resource
Oxford, UK
:
Blackwell Publishing Ltd
FEMS microbiology letters
36 (1986), S. 0
ISSN:
1574-6968
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Biology
Notes:
Abstract Glyceraldehyde-3-P dehydrogenase (GAPDH) in heterocysts and vegetative cells of 3 N2-fixing cyanobacteria was found to utilize both NAD+ and NADP+. The enzyme activity was enhanced by thiols (glutathione, reduced lipoic acid and dithiothreitol). GAPDH of the 3 cyanobacterial species was not activated by thioredoxin. Heterocysts have now been shown to possess all the enzymes of glycolysis and the tricarboxylic acid cycle to convert glyceraldehyde-3-phosphate (GAP) to oxoglutarate and glutamate. The GAPDH reaction is a major source for the generation of NADH, which is oxidized by a thylakoid-bound NADH:plastoquinone oxidoreductase in heterocysts.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1574-6968.1986.tb01696.x
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