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Fermentation in the unicellular cyanobacterium Microcystis PCC7806
Archives of Microbiology, 1994The cyanobacterium Microcystis PCC7806 fermented endogenously stored glycogen to ethanol, acetate, CO2, and H2 when incubated anaerobically in the dark. The switch from photoautotrophic to fermentative metabolism did not require de novo protein synthesis, and fermentation started immediately after cells had been transferred to dark anoxic conditions ...
Moezelaar, H.R., Stal, L.J.
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An Unusual Phycoerythrin from a Marine Cyanobacterium
Science, 1984Phycoerythrin conjugates are reagents for cell sorting and analyses in which the argon-ion laser line at 488 nanometers is used for excitation. Many marine Synechococcus strains contain phycoerythrins with absorption maxima at approximately 490 and 550 nanometers; these maxima indicate the presence of phycourobilin ...
L J, Ong, A N, Glazer, J B, Waterbury
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Cyanophages infecting the oceanic cyanobacterium Prochlorococcus
Nature, 2003Prochlorococcus is the numerically dominant phototroph in the tropical and subtropical oceans, accounting for half of the photosynthetic biomass in some areas. Here we report the isolation of cyanophages that infect Prochlorococcus, and show that although some are host-strain-specific, others cross-infect with closely related marine Synechococcus as ...
Matthew B, Sullivan +2 more
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Cytotoxicity of Cyanobacterium Microcystis aeruginosa
Journal of Veterinary Medicine, Series B, 1992SummaryCytotoxic effects of crude extracts and fractions of the purification steps towards Microcystin‐LR (MCYST‐LR) were investigated in vitro. Cytoxicity was evaluated by measure of lactate dehydrogenase liberation of Chang liver cells and by hemolysis. Crude extracts of strain PCC 7806 damaged the cells within a few minutes.
K, Henning, J, Cremer, H, Meyer
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Photoinhibition of photosynthesis in the cyanobacterium Microcystis aeruginosa
Planta, 1983We have examined characteristics of the photoinhibition of photosynthesis which occur in the unicellular cyanobacterium Microcystis aeruginosa, following exposure to photon fluence rates in excess of those required for growth. Photoinhibition occurs following exposure of cells to a photon fluence rate of 1,000 μmol m(-2) s(-1), which is manifested as a
G C, Whitelam, G A, Cold
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Interference of Nucleases in Cyanobacterium Ferredoxin Purification
Preparative Biochemistry, 1995Isolation of cyanobacterial ferredoxin is normally carried out using nucleases in order to degrade the nucleic acids that accompany this protein during the purification procedure. However, this practice presents the inconvenience that these proteins remain in trace amounts in the purified ferredoxin preparations, although they are not visible by ...
M T, Bes, P, Razquin, C, Gómez-Moreno
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Photosynthetic and respiratory electron transport in a cyanobacterium
Photosynthesis Research, 1986In the cyanobacterium Agmenellum quadruplicatum steady-state redox conditions were monitored in vivo for cytochrome (δ+c553) and P700 versus intensities of an actinic light 1 or light 2 (mainly absorbed by photosystems, and 2, respectively). Parallel measurements of O2 evolution were used to calibrate intensities for rates of electron transfer. Results
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Redundant Pathways of Sunscreen Biosynthesis in a Cyanobacterium
ChemBioChem, 2012Route of the sun block: according to empirical evidence, sun-screening mycosporine-like amino acids (MAAs) in Eukarya originate from the shikimic acid pathway, whereas in cyanobacteria, biosynthesis of the MAA shinorine reportedly occurs through the pentose phosphate pathway. However, gene deletion shows that the cyanobacterium Anabaena variabilis ATCC
Spence, Edward +3 more
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Protoplasts from the cyanobacterium,Spirulina platensis
World Journal of Microbiology & Biotechnology, 1992Protoplasts were obtained from the filamentous blue-green algaSpirulina platensis by treating the filaments with 0.05% (w/v) lysozyme in 0.03M phosphate buffer. The protoplasts regenerated cell walls and formed colonies when plated on a regeneration medium. The highest percentage of regeneration, 40% was obtained after 21 days.
A M, Abo-Shady +4 more
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Generation of lysoglyceroglycolipids in the cyanobacterium phormidium tenue
Phytochemistry, 1992Two kinds of lysoglycolipids, monogalactosyl 1-monoacylglycerol and digalactosyl 1-monoacylglycerol were generated in the cyanobacterium, Phormidium tenue, when it was stored at -20 degrees for more than 1 month. By comparison of the compositions of fatty acid residues between monogalactosyl 1-monoacylglycerol and monogalactosyl diacylglycerol ...
N, Murakami +5 more
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