Oxidative phosphorylation in an extract of Anabaena variabilis

Bioenergetics Studies of the Cyanobacterium Anabaena variabilis

A cell-free system exhibiting both photophosphorylation (P /2e = 1) and oxidative phosphoryla­ tion (P/O up to 0 .8 ) is described for the cyanobacterium Anabaena variabilis. NADH and N A D PH were found to be equally effective as electron donors for oxidative phosphorylation. Low concentrations of U H D B T , an inhibitor of the cytochrome blc complex of mitochondria and chloroplasts. were fou...

Components of the proton electrochemical potential gradient in Anabaena variabilis.

RNA processing of nitrogenase transcripts in the cyanobacterium Anabaena variabilis.

Little is known about the regulation of nitrogenase genes in cyanobacteria. Transcription of the nifH1 and vnfH genes, encoding dinitrogenase reductases for the heterocyst-specific Mo-nitrogenase and the alternative V-nitrogenase, respectively, was studied by using a lacZ reporter. Despite evidence for a transcription start site just upstream of nifH1 and vnfH, promoter fragments that included ...

Potassium ion transport and electrogenesis in Anabaena variabilis.

Antifungal Activity of Anabaena Variabilis against Plant Pathogens

Cyanobacterial secondary metabolites have a diverse antagonistic activity that lead to disintegration of microbial growth. The study was conducted to evaluate the antifungal property possessed by cyanobacteriaAnabaena variabilis in retarding the growth of plant pathogenic fungal species. It was observed that the extracts prepared from Anabaena variabilis were capable of diminishing the growth a...