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Article

Mutations at pipX suppress lethality of PII-deficient mutants of Synechococcus elongatus PCC 7942.

Journal of bacteriology - 1 Aug 2009

Espinosa Javier, Castells Miguel Angel, Laichoubi Karim Boumediene, Contreras Asunción

Abstract excerpt

The P(II) proteins are found in all three domains of life as key integrators of signals reflecting the balance of nitrogen and carbon. Genetic inactivation of P(II) proteins is typically associated with severe growth defects or death. However, the molecular basis of these defects depends on the specific functions of the proteins with which P(II) proteins interact to regulate nitrogen metabolism in different...

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Identifiers

PMID: 19482921
DOI: 10.1128/JB.00557-09
PMCID: PMC2715732

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-07.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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Mutations at pipX suppress lethality of PII-deficient mutants of Synechococcus elongatus PCC 7942.PMID 19482921Read ↗

Dissection of the Mechanisms of Growth Inhibition Resulting from Loss of the PII Protein in the Cyanobacterium Synechococcus elongatus PCC 7942.Semantic proximity Read ↗

Evaluation of the effects of P(II) deficiency and the toxicity of PipX on growth characteristics of the P(II)-Less mutant of the cyanobacterium Synechococcus elongatus.Semantic proximity Read ↗

Concurrent transcriptional activation of ppa and ppx genes by phosphate deprivation in the cyanobacterium Synechocystis sp. strain PCC 6803.Semantic proximity Read ↗

Functional analysis of the phosphoprotein PII (glnB gene product) in the cyanobacterium Synechococcus sp. strain PCC 7942.Semantic proximity Read ↗

Protein phosphatase PphA from Synechocystis sp. PCC 6803: the physiological framework of PII-P dephosphorylation.Semantic proximity Read ↗

PipX, the coactivator of NtcA, is a global regulator in cyanobacteria.Semantic proximity Read ↗

Signal transduction protein PII phosphatase PphA is required for light-dependent control of nitrate utilization in synechocystis sp. strain PCC 6803.Semantic proximity Read ↗

PII is important in regulation of nitrogen metabolism but not required for heterocyst formation in the Cyanobacterium Anabaena sp. PCC 7120.Semantic proximity Read ↗

Interaction network in cyanobacterial nitrogen regulation: PipX, a protein that interacts in a 2-oxoglutarate dependent manner with PII and NtcA.Semantic proximity Read ↗

Transcriptional effects of the signal transduction protein P(II) (glnB gene product) on NtcA-dependent genes in Synechococcus sp. PCC 7942.Semantic proximity Read ↗

Mutational analyses reveal PLP-independent functions at PipY, the cyanobacterial paradigm for pyridoxal-phosphate binding proteinsSemantic proximity Read ↗

Mutational analyses reveal PLP-independent functions at PipY, the cyanobacterial paradigm for pyridoxal-phosphate binding proteins.Semantic proximity Read ↗

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