Results 11 to 20 of about 7,938 (254)

Heterocyst Thylakoid Bioenergetics [PDF]

Life, 2019
Heterocysts are specialized cells that differentiate in the filaments of heterocystous cyanobacteria. Their role is to maintain a microoxic environment for the nitrogenase enzyme during diazotrophic growth.
Ann Magnuson
doaj   +4 more sources

The ribonuclease E regulator RebA is essential for diazotrophic growth in the cyanobacterium Anabaena PCC 7120 [PDF]

mLife
Ribonuclease E (RNase E) is central to bacterial RNA metabolism. In cyanobacteria, its activity is inhibited by RebA, a key mechanism for controlling cell morphology.
Sujuan Liu, Zhenyu Wang, Guiming Lin, Wenkai Li, Xiaoli Zeng, Ju‐Yuan Zhang, Cheng‐Cai Zhang   +6 more
doaj   +2 more sources

Glycolipid composition of the heterocyst envelope of Anabaena sp. PCC 7120 is crucial for diazotrophic growth and relies on the UDP‐galactose 4‐epimerase HgdA

MicrobiologyOpen, 2019
The nitrogenase complex in the heterocysts of the filamentous freshwater cyanobacterium Anabaenasp. PCC 7120 fixes atmospheric nitrogen to allow diazotrophic growth.
Dmitry Shvarev, Carolina N. Nishi, Iris Maldener   +2 more
doaj   +2 more sources

Intercellular communication in the fern endosymbiotic cyanobacterium Nostoc azollae [PDF]

mBio
The water fern Azolla spp. harbors as an endobiont the N2-fixing, filamentous, heterocyst-forming cyanobacterium Nostoc azollae. N. azollae provides the fern with fixed nitrogen permitting its growth in nitrogen-poor environments.
Cristina Sarasa-Buisán, Mercedes Nieves-Morión, Peter Lindblad, Sandra Nierzwicki-Bauer, Henriette Schluepmann, Enrique Flores   +5 more
doaj   +2 more sources

Specific Glucoside Transporters Influence Septal Structure and Function in the Filamentous, Heterocyst-Forming Cyanobacterium Anabaena sp Strain PCC 7120 [PDF]

Journal of Bacteriology, 2017
T When deprived of combined nitrogen, some filamentous cyanobacteria contain two cell types: vegetative cells that fix CO2 through oxygenic photosynthesis and heterocysts that are specialized in N2 fixation.
Flores, E, Frias, JE, Lechno-Yossef, S, Lopez-Igual, R, Mariscal, V, Mullineaux, CW, Nieves-Morlon, M, Nurnberg, DJ, Wolk, CP   +8 more
core   +2 more sources

The Cyanotoxin BMAA Induces Heterocyst Specific Gene Expression in Anabaena sp. PCC 7120 under Repressive Conditions

Toxins, 2018
Cyanobacteria synthesize neurotoxic β-N-methylamino-l-alanine (BMAA). The roles of this non-protein amino acid in cyanobacterial cells are insufficiently studied. During diazotrophic growth, filamentous cyanobacteria form single differentiated cells,
Alexandra A. Popova, Tatiana A. Semashko, Natalia V. Kostina, Ulla Rasmussen, Vadim M. Govorun, Olga A. Koksharova   +5 more
doaj   +2 more sources

Regulation of Genes Involved in Heterocyst Differentiation in the Cyanobacterium Anabaena sp. Strain PCC 7120 by a Group 2 Sigma Factor SigC

Life, 2015
The filamentous cyanobacterium Anabaena sp. strain PCC 7120 differentiates specialized cells for nitrogen fixation called heterocysts upon limitation of combined nitrogen in the medium.
Shigeki Ehira
exaly   +3 more sources

The heterocyst differentiation transcriptional regulator HetR of the filamentous cyanobactrium Anabaena forms tetramers and can be regulated by phosphorylation [PDF]

Molecular Microbiology, 2017
Many filamentous cyanobacteria respond to the external cue of nitrogen scarcity by the differentiation of heterocysts, cells specialized in the fixation of atmospheric nitrogen in oxic environments. Heterocysts follow a spatial pattern along the filament
Flores, Enrique, Herrero, Antonia, Valladares, Ana   +2 more
core   +2 more sources

Maintenance of heterocyst patterning in a filamentous cyanobacterium [PDF]

Journal of Biological Dynamics, 2010
In the absence of sufficient combined nitrogen, some filamentous cyanobacteria differentiate nitrogenfixing heterocysts at approximately every 10th cell position.
Allen, John S., Callahan, Sean M., Zhu, Mei   +2 more
core   +4 more sources

Metalloproteins in the Biology of Heterocysts [PDF]

Life, 2019
Cyanobacteria are photoautotrophic microorganisms present in almost all ecologically niches on Earth. They exist as single-cell or filamentous forms and the latter often contain specialized cells for N2 fixation known as heterocysts.
Rafael Pernil, Enrico Schleiff
doaj   +4 more sources