Results 51 to 60 of about 2,612 (190)

Mutual dependence of the expression of the cell differentiation regulatory protein HetR and the global nitrogen regulator NtcA during heterocyst development [PDF]

, 2002
Heterocyst differentiation in the cyanobacterium Anabaena sp. strain PCC 7120 depends on both the global nitrogen regulator NtcA and the cell differentiation regulatory protein HetR, and induction of hetR upon nitrogen step-down depends on NtcA.
Alicia M. Muro-Pastor, Ana Valladares, Antonia Herrero, Ausubel, Black, Buikema, Buikema, Buikema, Cai, Dong, Elhai, Enrique Flores, Fiedler, Flores, Frías, Frías, Golden, Hebbar, Herrero, Khudyakov, Luque, Luque, Muro-Pastor, Ramasubramanian, Rippka, Valladares, Vega-Palas, Vioque, Wei, Wolk, Wong   +30 more
core   +1 more source

Mathematical models of nitrogen-fixing cell patterns in filamentous cyanobacteria

Frontiers in Cell and Developmental Biology, 2022
The Anabaena genus is a model organism of filamentous cyanobacteria whose vegetative cells can differentiate under nitrogen-limited conditions into a type of cell called a heterocyst. These heterocysts lose the possibility to divide and are necessary for
Pau Casanova-Ferrer, Pau Casanova-Ferrer, Pau Casanova-Ferrer, Javier Muñoz-García, Javier Muñoz-García, Saúl Ares, Saúl Ares   +6 more
doaj   +1 more source

Identification of ferredoxin II as a major calcium binding protein in the nitrogen-fixing symbiotic bacterium Mesorhizobium loti [PDF]

, 2015
BACKGROUND: Legumes establish with rhizobial bacteria a nitrogen-fixing symbiosis which is of the utmost importance for both plant nutrition and a sustainable agriculture.
Damiani, Ernesto, Ercolin, Flavia, Moscatiello, Roberto, Navazio, Lorella, Roveri, Antonella, Squartini, Andrea, Zaccarin, Mattia   +6 more
core   +1 more source

Raman spectral analysis of microbial pigment compositions in vegetative cells and heterocysts of multicellular cyanobacterium

Biochemistry and Biophysics Reports, 2023
The one-dimensional multicellular cyanobacterium, Anabaena sp. PCC 7120, exhibits a simple topology consisting of two types of cells under the nitrogen-depleted conditions.
Jun-ichi Ishihara, Hiroki Takahashi
doaj   +1 more source

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   +1 more source

Heterocyst placement strategies to maximize growth of cyanobacterial filaments

, 2012
Under conditions of limited fixed-nitrogen, some filamentous cyanobacteria develop a regular pattern of heterocyst cells that fix nitrogen for the remaining vegetative cells.
Aidan I Brown, Andrew D Rutenberg, Brown A I, Fogg G E, Gibson C E, Herrero A, Popa R, Powell E O, Risser D D, Stumm W, Wetzel R G   +10 more
core   +1 more source

Structures of complexes comprised of Fischerella transcription factor HetR with Anabaena DNA targets [PDF]

, 2013
HetR is an essential regulator of heterocyst development in cyanobacteria. Many mutations in HetR render Anabaena incapable of nitrogen fixation. The protein binds to a DNA palindrome upstream of hetP and other genes.
Callahan, Sean M., Gornicki, Piotr, Haselkorn, Robert, Hurd, Kathryn, Joachimiak, Andrzej, Joachimiak, Grazyna, Kim, Youngchang, Videau, Patrick, Ye, Zi, Young, Jasmine, Zhao, Jindong   +10 more
core   +1 more source

Tansley Review No. 107. Heterocyst and akinete differentiation in cyanobacteria [PDF]

New Phytologist, 1999
Summary 3I. introduction 4II. the cyanobacteria 7III. the heterocyst 91. Function and metabolism 92. Heterocyst structure 12(a) Overview 12(b) The polysaccharide (homogeneous) layer 12(c) The glycolipid (laminated) layer 12(d) The septum and microplasmodesmata 123. Nitrogen regulation and heterocyst development 124.
DAVID G. ADAMS, PAULA S. DUGGAN
openaire   +1 more source

ZipN is an essential FtsZ membrane tether and contributes to the septal localization of SepJ in the flamentous cyanobacterium Anabaena [PDF]

, 2019
The organismic unit of heterocyst-forming cyanobacteria is a filament of communicating cells connected by septal junctions, proteinaceous structures bridging the cytoplasms of contiguous cells.
Arévalo, Sergio, Camargo Bernal, Sergio, Corrales Guerrero, Laura, Herrero Moreno, Antonia, Picossi Goñi, Silvia María, Valladares Ruiz, Ana   +5 more
core   +2 more sources

Chroococcidiopsis and Heterocyst-Differentiating Cyanobacteria Are Each Other's Closest Living Relatives

Molecular Phylogenetics and Evolution, 2002
Many filamentous cyanobacteria reduce atmospheric nitrogen in specialized differentiated cells called heterocysts. Here we present evidence that shows that members of the unicellular non-heterocyst-differentiating genus Chroococcidiopsis and the filamentous heterocyst-differentiating cyanobacteria are each other's closest living relatives.
Fewer, D., Friedl, Thomas, Budel, B.
openaire   +3 more sources