Results 21 to 30 of about 2,720 (207)

The effect of oxygen concentration and temperature on nitrogenase activity in the heterocystous cyanobacterium Fischerella sp.

Scientific Reports, 2017
Heterocysts are differentiated cells formed by some filamentous, diazotrophic (dinitrogen-fixing) cyanobacteria. The heterocyst is the site of dinitrogen fixation providing the oxygen-sensitive nitrogenase with a low-oxygen environment.
Lucas J. Stal
doaj   +1 more source

Surveying DNA Elements within Functional Genes of Heterocyst-Forming Cyanobacteria.

PLoS ONE, 2016
Some cyanobacteria are capable of differentiating a variety of cell types in response to environmental factors. For instance, in low nitrogen conditions, some cyanobacteria form heterocysts, which are specialized for N2 fixation.
Jason A Hilton, John C Meeks, Jonathan P Zehr   +2 more
doaj   +1 more source

Impaired cell-cell communication in the multicellular cyanobacterium Anabaena affects carbon uptake, photosynthesis, and the cell wall

iScience, 2021
Summary: Cell-cell communication is an essential attribute of multicellular organisms. The effects of perturbed communication were studied in septal protein mutants of the heterocyst-forming filamentous cyanobacterium Anabaena sp. PCC 7120 model organism.
Sergio Camargo, Dena Leshkowitz, Bareket Dassa, Vicente Mariscal, Enrique Flores, Joel Stavans, Rinat Arbel-Goren   +6 more
doaj   +1 more source

Functional Dissection of Genes Encoding DNA Polymerases Based on Conditional Mutants in the Heterocyst-Forming Cyanobacterium Anabaena PCC 7120

Frontiers in Microbiology, 2020
The filamentous cyanobacterium Anabaena sp. PCC 7120 develops N2-fixing heterocyst cells under condition of combined-nitrogen deprivation and constitutes an excellent model for studying cell differentiation.
Wei-Yue Xing, Wei-Yue Xing, Wei-Yue Xing, Li-rui Xie, Li-rui Xie, Xiaoli Zeng, Xiaoli Zeng, Yiling Yang, Yiling Yang, Cheng-Cai Zhang, Cheng-Cai Zhang, Cheng-Cai Zhang   +11 more
doaj   +1 more source

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, Shogo Miyazaki
doaj   +1 more source

Current Understanding of the Structure and Function of Pentapeptide Repeat Proteins

Biomolecules, 2021
The pentapeptide repeat protein (PRP) superfamily, identified in 1998, has grown to nearly 39,000 sequences from over 3300 species. PRPs, recognized as having at least eight contiguous pentapeptide repeats (PRs) of a consensus pentapeptide sequence ...
Ruojing Zhang, Michael A. Kennedy
doaj   +1 more source

The Nitrogen Stress-Repressed sRNA NsrR1 Regulates Expression of all1871, a Gene Required for Diazotrophic Growth in Nostoc sp. PCC 7120

Life, 2020
Small regulatory RNAs (sRNAs) are post-transcriptional regulators of bacterial gene expression. In cyanobacteria, the responses to nitrogen availability, that are mostly controlled at the transcriptional level by NtcA, involve also at least two small ...
Isidro Álvarez-Escribano, Manuel Brenes-Álvarez, Elvira Olmedo-Verd, Agustín Vioque, Alicia M. Muro-Pastor   +4 more
doaj   +1 more source

The Dual Role of the Glycolipid Envelope in Different Cell Types of the Multicellular Cyanobacterium Anabaena variabilis ATCC 29413

Frontiers in Microbiology, 2021
Anabaena variabilis is a filamentous cyanobacterium that is capable to differentiate specialized cells, the heterocysts and akinetes, to survive under different stress conditions.
Ritu Garg, Iris Maldener
doaj   +1 more source

Preventing Accidental Heterocyst Development in Cyanobacteria [PDF]

Journal of Bacteriology, 2019
The filamentous cyanobacterium Anabaena can form heterocysts specialized in N 2 fixation, mostly through a cascade of transcriptional activation in response to the nitrogen starvation signal 2-oxoglutarate.
Wei-Yue, Xing, Cheng-Cai, Zhang
openaire   +2 more sources

The ABC Transporter Components HgdB and HgdC are Important for Glycolipid Layer Composition and Function of Heterocysts in Anabaena sp. PCC 7120

Life, 2018
Anabaena sp. PCC 7120 is a filamentous cyanobacterium able to fix atmospheric nitrogen in semi-regularly spaced heterocysts. For correct heterocyst function, a special cell envelope consisting of a glycolipid layer and a polysaccharide layer is essential.
Dmitry Shvarev, Carolina N. Nishi, Lars Wörmer, Iris Maldener   +3 more
doaj   +1 more source