Low-Iron Stress in the Cyanobacterium Anabaena variabilis

1990 ◽  
pp. 3555-3557
Author(s):  
Birgit Michelsen ◽  
Mette Miller ◽  
Raymond P. Cox
Keyword(s):  
Anabaena Variabilis ◽  
Iron Stress ◽  
Cyanobacterium Anabaena

scholarly journals Conditions for Mutagenesis of the Nitrogen-fixing Cyanobacterium Anabaena variabilis

Microbiology ◽  
1987 ◽  
Vol 133 (1) ◽  
pp. 111-118
Author(s):  
J. S. Chapman ◽  
J. C. Meeks
Keyword(s):  
Anabaena Variabilis ◽  
Nitrogen Fixing ◽  
Cyanobacterium Anabaena

Bioenergetics Studies of the Cyanobacterium Anabaena variabilis

1987 ◽  
Vol 42 (11-12) ◽  
pp. 1280-1284 ◽  
Author(s):  
Siegfried Scherer ◽  
Heike Sadowski ◽  
Peter Böger
Keyword(s):  
Electron Transport ◽  
Photosystem Ii ◽  
Cytochrome B ◽  
Anabaena Variabilis ◽  
Electron Donors ◽  
Free System ◽  
Low Concentrations ◽  
Cyanobacterium Anabaena ◽  
A Cell ◽  
C Complex

A cell-free system exhibiting both photophosphorylation (P/2e= 1) and oxidative phosphoryltion (P/O up to 0.8) is described for the cyanobacterium Anabaena variabilis. NADH ant NADPH were found to be equally effective as electron donors for oxidative phosphorylation. Low concentrations of UHDBT, an inhibitor of the cytochrome b/c complex of mitochondria ant loroplasts, were found to inhibit photosystem-II electron transport reactions, but did not affet the cytochrome b6/f-complex of Anabaena. The inhibition by myxothiazol, antimycin and heptyihydroxyquinoline corroborates the hypothesis that both respiration and photosynthesis share the cytochrome b6/f-complex.

scholarly journals Light-Induced Proton Release by the Cyanobacterium Anabaena variabilis

1988 ◽  
Vol 86 (3) ◽  
pp. 769-772 ◽  
Author(s):  
Siegfried Scherer ◽  
Heike Riege ◽  
Peter Böger
Keyword(s):  
Anabaena Variabilis ◽  
Proton Release ◽  
Cyanobacterium Anabaena

Proteolysis in Heterocyst-Forming Cyanobacteria: Characterization of a Further Enzyme with Trypsin-Like Specificity, and of a Prolyl Endopeptidase from Anabaena variabilis

1994 ◽  
Vol 49 (1-2) ◽  
pp. 70-78 ◽  
Author(s):  
Ulrike Strohmeier ◽  
Christian Gerdes ◽  
Wolfgang Lockau
Keyword(s):  
Ion Exchange ◽  
Proteolytic Enzymes ◽  
Ion Exchange Chromatography ◽  
Exchange Chromatography ◽  
Anabaena Variabilis ◽  
Prolyl Endopeptidase ◽  
Cyanobacterium Anabaena

Soluble extracts of the cyanobacterium Anabaena variabilis ATCC 29413 and an engineered mutant that lacks an intracellular protease cleaving after Lys and Arg (Maldener, Lockau, Cai, and Wolk, Mol. Gen. Genet. 225, 113-120 (1991)) were separated by ion exchange chromatography, and protease profiles determined using azocasein, Nα-benzoyl-ᴅ,ʟ arginine- 4-nitroanilide and N-carbobenzoxy-glycyl-ʟ-proline-4-nitroanilide as substrates. A second enzyme cleaving at the carboxyl side of lysine and arginine, and a prolyl endopeptidase were detected, enriched and characterized. Both proteolytic enzymes appear to be located in the periplasm.

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