Results 211 to 220 of about 7,938 (254)

Synthesis of nitrogenase by isolated heterocysts

Biochimica et Biophysica Acta (BBA) - Gene Structure and Expression, 1982
Heterocysts isolated from Anabaena variabilis incorporate [14C]leucine and [35S]methionine into trichloroacetic acid-precipitable material in the light. Analysis by polyacrylamide gel electrophoresis shows that the radioactivity is present in polypeptides of discrete sizes. However, the relative proportions of different proteins synthesized by isolated
S, Janaki, C P, Wolk
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Distribution of heterocyst glycolipids in cyanobacteria

Phytochemistry, 2009
Thirty-four axenic strains of cyanobacteria were analysed for their glycolipid content using high performance liquid chromatography coupled to electrospray ionisation tandem mass spectrometry (HPLC/ESI-MS(2)). Species of the families Nostocaceae and Rivulariaceae, capable of biosynthesising heterocysts, contained a suite of glycolipids consisting of ...
Bauersachs, T., Compaoré, J., Hopmans, E.C., Stal, L.J., Schouten, S., Sinninghe Damsté, J.S.   +5 more
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Temperature induced changes in the heterocyst glycolipid composition of N2 fixing heterocystous cyanobacteria

Organic Geochemistry, 2014
We investigated the effect of temperature on the heterocyst glycolipid (HG) composition of the diazotrophic heterocystous cyanobacteria Anabaena sp. strain CCY9613 and Nostoc sp. strain CCY9926 grown at 9, 12, 16, 20 and 24 °C. Both strains contained an overall similar composition of heterocyst glycolipids, with 1-(O-hexose)-3,25-hexacosanediols (HG26 ...
Bauersachs, T., Stal, L., Grego, M., Schwark, Lorenz   +3 more
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Heterocystous versus non-heterocystous cyanobacteria in microbial mats

1994
Relative to biological demands, marine waters are often depleted in combined forms of nitrogen (Dugdale 1967). As such, the development of microbial mats in coastal marine environments is dependent on the fixation of atmospheric dinitrogen as the dominant source of biologically available N.
Lucas J. Stal, Hans W. Paerl, Brad Bebout, Marlies Villbrandt   +3 more
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Spatiotemporal Gene Repression System in the Heterocyst-Forming Multicellular Cyanobacterium Anabaena sp. PCC 7120.

ACS Synthetic Biology, 2019
The heterocyst-forming multicellular cyanobacterium Anabaena sp. PCC 7120 is often used as a model organism for prokaryotic cell differentiation. We recently demonstrated that heterocysts are suitable for photosynthetic production of valuable chemicals ...
Akiyoshi Higo, S. Ehira
semanticscholar   +1 more source

On the reversibility of heterocyst differentiation

British Phycological Journal, 1974
Heterocyst development in the blue-green alga Anabaena cylindrica Lemm. was arrested by ammonia at an early stage of differentiation only. No dedifferentiation or germination of heterocysts in the presence of ammonia could be detected.
S.A. Kulasooriya, Peter Fay
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Chemical composition and production of exopolysaccharides from representative members of heterocystous and non-heterocystous cyanobacteria

Phytochemistry, 1999
Exopolysaccharide (EPS) production and chemical composition of heterocystous and non-heterocystous cyanobacteria of subgroups 3, 4, and 5 together with four new species isolated from Pantelleria (Italy) hard sands and from a lake in the proximity of Edmonson Point in Antarctica were studied.
B Nicolaus, A Panico, L Lama, I Romano, M C Manca, A De Giulio, A Gambacorta   +6 more
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Properties of heterocysts isolated with colloidal silica

Archives of Microbiology, 1976
A method is described for the isolation of heterocysts that are virtually free of contaminating cell debris after sonication of aerobically grown Anabaena 7120. Isolated heterocysts reduced acetylene in a light-dependent process in the absence of exogenously provided ATP; heterocysts supplied with ATP and Na2S2O4 reduced acetylene slowly in the dark ...
R B, Peterson, R H, Burris
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Interaction network among factors involved in heterocyst-patterning in cyanobacteria

Zeitschrift für Induktive Abstammungs- und Vererbungslehre, 2022
Xiaomei Xu, Raphaël Rachedi, M. Foglino, E. Talla, A. Latifi   +4 more
semanticscholar   +1 more source

Heterocyst Envelope Glycolipids

2009
Heterocyst-forming cyanobacteria simultaneously photosynthesize, producing oxygen (O2), and fix dini-trogen (N2), initially into ammonia, using nitrogenase enzymes that are rapidly inactivated by O2. These cyanobacteria enable nitrogenases to function in an oxic environment by segregating them within specialized cells, called heterocysts, in which O2 ...
Koichiro Awai, Sigal Lechno-Yossef, C. Peter Wolk   +2 more
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