Cell‐type specific modification of PII is involved in the regulation of nitrogen metabolism in the cyanobacterium Anabaena PCC 7120
- 21 September 2004
- journal article
- Published by Wiley in FEBS Letters
- Vol. 576 (1-2) , 261-265
- https://doi.org/10.1016/j.febslet.2004.09.014
Abstract
In the heterocystous cyanobacterium Anabaena PCC 7120, the modification state of the signalling PII protein is regulated according to the nitrogen regime of the cells, as already observed in some unicellular cyanobacteria. However, during the adaptation to diazotrophic growth conditions, PII is phosphorylated in vegetative cells while unphosphorylated in heterocysts. Isolation of mutants affected on PII modification state and analysis of their phenotypes allow us to show the implication of PII in the regulation of molecular nitrogen assimilation and more specifically, the requirement of unmodified state of PII in the formation of polar nodules of cyanophycin in heterocysts.Keywords
This publication has 38 references indexed in Scilit:
- Interactions between the Nitrogen Signal Transduction Protein PII and N -Acetyl Glutamate Kinase in Organisms That Perform Oxygenic PhotosynthesisJournal of Bacteriology, 2004
- Lack of evidence for phosphorylation of Arabidopsis thaliana PII: implications for plastid carbon and nitrogen signalingBiochimica et Biophysica Acta (BBA) - Proteins and Proteomics, 2004
- Nitrogen-regulated Genes for the Metabolism of Cyanophycin, a Bacterial Nitrogen Reserve PolymerJournal of Biological Chemistry, 2004
- PII signalling in unicellular cyanobacteria: analysis of redox‐signals and energy chargePhysiologia Plantarum, 2004
- The GS‐GOGAT pathway is not operative in the heterocysts. Cloning and expression of glsF gene from the cyanobacterium Anabaena sp. PCC 7120FEBS Letters, 2000
- Characterization of the glnB gene product of Nostoc punctiforme strain ATCC 29133: glnB or the PII protein may be essentialMicrobiology, 1998
- Dephosphorylation of the phosphoprotein PII in Synechococcus PCC 7942: identification of an ATP and 2‐oxoglutarate‐regulated phosphatase activityMolecular Microbiology, 1997
- Structure of the Escherichia coli signal transducing protein PIIStructure, 1994
- Rearrangement of nitrogen fixation genes during heterocyst differentiation in the cyanobacterium AnabaenaNature, 1985
- The Effects of Anaerobiosis on Nitrogenase Synthesis and Heterocyst Development by Nostocacean CyanobacteriaJournal of General Microbiology, 1978