Cyanobacteria forming one-dimensional filaments are paradigmatic model organisms of the
transition between unicellular and multicellular living forms. Under nitrogen-limiting …

When the filamentous cyanobacterium Anabaena PCC 7120 is exposed to combined
nitrogen starvation, 5 to 10% of the cells along each filament at semiregular intervals …

The PipX factor is a regulatory protein that seems to occur only in cyanobacteria. In the
filamentous, heterocyst-forming Anabaena sp. strain PCC 7120, open reading frame (ORF) …

The HetR protein has long been recognized as a key player in the regulation of heterocyst
development. HetR is known to possess autoproteolytic and DNA-binding activities. During …

For over 50 years scientists have considered the possibility of engineering a plant with
nitrogen fixation capability, freeing farmers from their dependence on nitrogen fertilizers …

One simple model to explain biological pattern postulates the existence of a stationary
regulator of differentiation that positively affects its own expression, coupled with a diffusible …

Unlike those of the wild-type strain, proheterocysts of the Anabaena sp. strain PCC 7120
hetC strain keep dividing. ftsZ, the most critical cell division gene, is up-regulated in hetC …

Nitrogen‐fixing heterocysts are arranged in a periodic pattern on filaments of the
cyanobacterium Anabaena sp. strain PCC 7120 under conditions of limiting combined …

The commitment of differentiating cells to a specialized fate is fundamental to the correct
assembly of tissues within a multicellular organism. Because commitment is often …

Summary FurC (PerR) from Anabaena sp. PCC7120 was previously described as a key
transcriptional regulator involved in setting off the oxidative stress response. In the last …