Interactions of PatA with the Divisome during Heterocyst Differentiation in
mSphere, 2020 The Anabaena organismic unit is a filament of communicating cells. Under conditions of nitrogen scarcity, some cells along the filament differentiate into heterocysts, which are specialized in the fixation of atmospheric N2 and provide the vegetative ...
Ana Valladares +2 more
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Regulation of Genes Involved in Heterocyst Differentiation in the Cyanobacterium Anabaena sp. Strain PCC 7120 by a Group 2 Sigma Factor SigC [PDF]
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 +5 more sources
Expression from DIF1-motif promoters of hetR and patS is dependent on HetZ and modulated by PatU3 during heterocyst differentiation. [PDF]
PLoS ONE, 2020 HetR and PatS/PatX-derived peptides are the activator and diffusible inhibitor for cell differentiation and patterning in heterocyst-forming cyanobacteria. HetR regulates target genes via HetR-recognition sites.
Yaru Du +7 more
doaj +3 more sources
The Integrity of the Cell Wall and Its Remodeling during Heterocyst Differentiation Are Regulated by Phylogenetically Conserved Small RNA Yfr1 in
mBio, 2020 Yfr1 is a strictly conserved small RNA in cyanobacteria. A bioinformatic prediction to identify possible interactions of Yfr1 with mRNAs was carried out by using the sequences of Yfr1 from several heterocyst-forming strains, including Nostoc sp.
Manuel Brenes-Álvarez +2 more
doaj +3 more sources
NsrM (All0345) and NsrX (Alr1976), two FurC (PerR)-targeted transcriptional regulators, modulate nitrogen metabolism and heterocyst differentiation genes in the cyanobacterium Anabaena sp. strain PCC 7120 [PDF]
Microbiology SpectrumThe control of nitrogen metabolism in the model cyanobacterium Anabaena sp. strain PCC7120 is a complex process orchestrated by master regulators such as NtcA, HetR, and FurC (PerR).
Jorge Guío +8 more
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The Heterocyst-Specific Small RNA NsiR1 Regulates the Commitment to Differentiation in Nostoc
Microbiology Spectrum, 2022 Heterocysts are specialized cells that filamentous cyanobacteria differentiate for the fixation of atmospheric nitrogen when other nitrogen sources are not available.
Manuel Brenes-Álvarez +2 more
doaj +5 more sources
Spatial fluctuations in expression of the heterocyst differentiation regulatory gene hetR in Anabaena filaments. [PDF]
PLoS Genetics, 2015 Under nitrogen deprivation, filaments of the cyanobacterium Anabaena undergo a process of development, resulting in a one-dimensional pattern of nitrogen-fixing heterocysts separated by about ten photosynthetic vegetative cells.
Laura Corrales-Guerrero +6 more
doaj +3 more sources
The ribonuclease E regulator RebA is essential for diazotrophic growth in the cyanobacterium Anabaena PCC 7120 [PDF]
mLifeRibonuclease 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 +6 more
doaj +3 more sources
Structure of transcription factor HetR required for heterocyst differentiation in cyanobacteria. [PDF]
Proc Natl Acad Sci U S A, 2011 HetR is an essential regulator of heterocyst development in cyanobacteria. HetR binds to a DNA palindrome upstream of the hetP gene. We report the crystal structure of HetR from Fischerella at 3.0 Å.
Kim Y +9 more
europepmc +6 more sources
A proteolytic pathway coordinates cell division and heterocyst differentiation in the cyanobacterium <i>Anabaena</i> sp. PCC 7120. [PDF]
Proc Natl Acad Sci U S A, 2022 Significance Protein degradation is an important regulation mechanism in biology. Although HetF has long been predicted to be a putative protease in the filamentous cyanobacterium Anabaena sp.
Xing WY +4 more
europepmc +2 more sources