Results 31 to 40 of about 7,938 (254)

Heterocyst Septa Contain Large Nanopores That Are Influenced by the Fra Proteins in the Filamentous Cyanobacterium Anabaena sp. Strain PCC 7120

Journal of Bacteriology, 2021
Intercellular communication, an essential attribute of multicellularity, is required for diazotrophic growth in heterocyst-forming cyanobacteria such as Anabaena, in which the cells are connected by proteinaceous septal junctions that are structural ...
S. Arévalo, E. Flores
semanticscholar   +1 more source

hetN and patS Mutations Enhance Accumulation of Fatty Alcohols in the hglT Mutants of Anabaena sp. PCC 7120

Frontiers in Plant Science, 2020
The heterocysts present in filamentous cyanobacteria such as Anabaena sp. PCC 7120 are known to be regulated by HetN and PatS, the repressors of heterocyst differentiation; therefore, the inactivation of these proteins will result in the formation of ...
Heli Siti Halimatul Munawaroh, Heli Siti Halimatul Munawaroh, Egi Tritya Apdila, Koichiro Awai, Koichiro Awai, Koichiro Awai   +5 more
doaj   +1 more source

Interactions of PatA with the Divisome during Heterocyst Differentiation in Anabaena

Msphere, 2020
Anabaena is a cyanobacterial model that represents an ancient and simple form of biological multicellularity. The Anabaena organism is a filament of cohesive and communicating cells that can include cells specialized in different tasks.
A. Valladares, Cristina Velázquez-Suárez, A. Herrero   +2 more
semanticscholar   +1 more source

Relationships between the ABC-exporter HetC and peptides that regulate the spatiotemporal pattern of heterocyst distribution in Anabaena. [PDF]

PLoS ONE, 2014
In the model cyanobacterium Anabaena sp. PCC 7120, cells called heterocysts that are specialized in the fixation of atmospheric nitrogen differentiate from vegetative cells of the filament in the absence of combined nitrogen.
Laura Corrales-Guerrero, Enrique Flores, Antonia Herrero   +2 more
doaj   +1 more source

A combinatorial strategy of alternative promoter use during differentiation of a heterocystous cyanobacterium [PDF]

, 2017
Heterocystous cyanobacteria such as Nostoc sp. are filamentous photosynthetic organisms that, in response to nitrogen deficiency, undergo a differentiation process transforming certain, semi-regularly spaced cells into heterocysts, devoted to nitrogen ...
Brenes Álvarez, Manuel, Muro Pastor, Alicia María, Vioque Peña, Agustín   +2 more
core   +1 more source

The Integrity of the Cell Wall and Its Remodeling during Heterocyst Differentiation Are Regulated by Phylogenetically Conserved Small RNA Yfr1 in Nostoc sp. Strain PCC 7120

mBio, 2020
Bacterial small RNAs (sRNAs) are important players affecting the regulation of essentially every aspect of bacterial physiology. The cell wall is a highly dynamic structure that protects bacteria from their fluctuating environment.
Manuel Brenes-Álvarez, A. Vioque, A. Muro-Pastor   +2 more
semanticscholar   +1 more source

The proteome of the heterocyst cell wall in Anabaena sp. PCC 7120 [PDF]

, 2007
Anabaena sp. PCC 7120 is a filamentous cyanobacterium that serves as a model to analyze prokaryotic cell differentiation, evolutionary development of plastids, and the regulation of nitrogen fixation.
Berg, Matthias, Eichacker, Lutz A., Flores, Enrique, Mirus, Oliver, Moslavac, Suncana, Plöscher, Matthias, Reisinger, Veronika, Schleiff, Enrico, Vosyka, Oliver   +8 more
core   +1 more source

The Pkn22 Kinase of Nostoc PCC 7120 Is Required for Cell Differentiation via the Phosphorylation of HetR on a Residue Highly Conserved in Genomes of Heterocyst-Forming Cyanobacteria

Frontiers in Microbiology, 2020
Hanks-type kinases encoding genes are present in most cyanobacterial genomes. Despite their widespread pattern of conservation, little is known so far about their role because their substrates and the conditions triggering their activation are poorly ...
Baptiste Roumezi, Xiaomei Xu, V. Risoul, Yingping Fan, R. Lebrun, A. Latifi   +5 more
semanticscholar   +1 more source

Transcriptional regulation of development in heterocyst-forming cyanobacteria.

Biochimica et Biophysica Acta. Gene Regulatory Mechanisms, 2019
Filamentous, heterocyst-forming cyanobacteria are among the simplest multicellular systems in Nature. In the absence of combined nitrogen, the filaments consist of vegetative cells that fix CO2 through oxygenic photosynthesis and micro-oxic heterocysts ...
E. Flores, S. Picossi, A. Valladares, A. Herrero   +3 more
semanticscholar   +1 more source

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