Results 31 to 40 of about 1,262 (192)

Differentiation in Nostoc muscorum: Nitrogenase Is Synthesized in Heterocysts [PDF]

Proceedings of the National Academy of Sciences, 1973
Cellular differentiation can be observed in certain filamentous blue-green algae after transfer of the cells from medium containing NH 4 + or NO 3 - to nitrogen-free medium.
H, Fleming, R, Haselkorn
openaire   +2 more sources

Inactivation of Three RG(S/T)GR Pentapeptide-Containing Negative Regulators of HetR Results in Lethal Differentiation of Anabaena PCC 7120

Life, 2020
The filamentous cyanobacterium Anabaena sp. PCC 7120 produces, during the differentiation of heterocysts, a short peptide PatS and a protein HetN, both containing an RGSGR pentapeptide essential for activity.
Ivan Khudyakov, Grigory Gladkov, Jeff Elhai   +2 more
doaj   +1 more source

Canavanine-lnduced inhibition of growth and heterocyst differentiation in Anabaena doliolum and isolation of a canavanine-resistant mutant [PDF]

, 1981
The effect of the arginine analogue, canavanine on growth and heterocyst differentiation in the nitrogen-fixing algaAnabaena doliolum has been studied. The analogue inhibited growth and heterocyst differentiation at a concentration as low as 1 µM.
Kumar, A., Kumar, H. D.
core   +3 more sources

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

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, Véronique Risoul, Yingping Fan, Régine Lebrun, Amel Latifi   +5 more
doaj   +1 more source

Heterocyst differentiation and pattern formation in cyanobacteria: a chorus of signals [PDF]

Molecular Microbiology, 2005
SummaryHeterocyst differentiation in filamentous cyanobacteria provides an excellent prokaryotic model for studying multicellular behaviour and pattern formation. In Anabaena sp. strain PCC 7120, for example, 5–10% of the cells along each filament are induced, when deprived of combined nitrogen, to differentiate into heterocysts.
Zhang, C.-C., Laurent, S., Sakr, S., Peng, Ling, Bédu, S.   +4 more
openaire   +3 more sources

Specific mutations in the permease domain of septal protein SepJ differentially affect functions related to multicellularity in the filamentous cyanobacterium Anabaena

Microbial Cell, 2018
Filamentous, heterocyst-forming cyanobacteria are multicellular organisms in which growth requires the activity of two interdependent cell types that exchange nutrients and regulators.
Félix Ramos-León, Sergio Arévalo, Vicente Mariscal, Enrique Flores   +3 more
doaj   +1 more source

HETEROCYST DIFFERENTIATION AND POLARITY IN CALOTHRIX [PDF]

New Phytologist, 1978
SUMMARYWhen grown in a nitrogen‐free medium Calothrix brevissima West has a basal heterocyst followed by a filament of cells of decreasing size. In a nitrate medium, the alga does not form heterocysts but partial polarity, i.e. tapering of the filaments, remains.
A. K. RAI, K. D. PANDEY, A. K. KASHYAP
openaire   +1 more source

Dynamics and Cell-Type Specificity of the DNA Double-Strand Break Repair Protein RecN in the Developmental Cyanobacterium Anabaena sp. Strain PCC 7120. [PDF]

PLoS ONE, 2015
DNA replication and repair are two fundamental processes required in life proliferation and cellular defense and some common proteins are involved in both processes. The filamentous cyanobacterium Anabaena sp.
Sheng Hu, Jinglan Wang, Li Wang, Cheng-Cai Zhang, Wen-Li Chen   +4 more
doaj   +1 more source

The small Ca2+-binding protein CSE links Ca2+ signalling with nitrogen metabolism and filament integrity in Anabaena sp. PCC 7120

BMC Microbiology, 2020
Background Filamentous cyanobacteria represent model organisms for investigating multicellularity. For many species, nitrogen-fixing heterocysts are formed from photosynthetic vegetative cells under nitrogen limitation.
Julia Walter, Francisco Leganés, Eva-Mari Aro, Peter J. Gollan   +3 more
doaj   +1 more source