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Article

Heterocyst-specific expression of patB, a gene required for nitrogen fixation in Anabaena sp. strain PCC 7120.

Journal of bacteriology - 1 Apr 2003

Jones Kathryn M, Buikema William J, Haselkorn Robert

Abstract excerpt

The patB gene product is required for growth and survival of the filamentous cyanobacterium Anabaena sp. strain PCC 7120 in the absence of combined nitrogen. A patB::gfp fusion demonstrated that this gene is expressed exclusively in heterocysts. patB mutants have a normal initial pattern of heterocyst spacing along the filament but differentiate excess heterocysts after several days in the absence of combined...

Read the complete abstract on PubMed

Topics

Anabaena
Bacterial Proteins
Cell Division
DNA-Binding Proteins
Electron Transport Complex IV
Gene Expression Regulation, Bacterial

Methodology Data sources Editorial policy Privacy Delete account & data About Contact Helena Bioinformatics

Genes, Bacterial

Green Fluorescent Proteins

Helix-Turn-Helix Motifs

Luminescent Proteins

Mutation

Nitrogen Fixation

Operon

Phenotype

Promoter Regions, Genetic

Recombinant Proteins

Transaminases

Source

Open in PubMed Open full text

Identifiers

PMID: 12644502
DOI: 10.1128/JB.185.7.2306-2314.2003
PMCID: PMC151484

Provenance

PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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Heterocyst-specific expression of patB, a gene required for nitrogen fixation in Anabaena sp. strain PCC 7120.PMID 12644502Read ↗

PatS and products of nitrogen fixation control heterocyst pattern.Semantic proximity Read ↗

A gene cluster that regulates both heterocyst differentiation and pattern formation in Anabaena sp. strain PCC 7120.Semantic proximity Read ↗

The Anabaena sp. strain PCC 7120 asr1734 gene encodes a negative regulator of heterocyst development.Semantic proximity Read ↗

HetF and PatA control levels of HetR in Anabaena sp. strain PCC 7120.Semantic proximity Read ↗

Epistasis analysis of four genes from Anabaena sp. strain PCC 7120 suggests a connection between PatA and PatS in heterocyst pattern formation.Semantic proximity Read ↗

Different functions of HetR, a master regulator of heterocyst differentiation in Anabaena sp. PCC 7120, can be separated by mutation.Semantic proximity Read ↗

Functional Overlap of hetP and hetZ in Regulation of Heterocyst Differentiation in Anabaena sp. Strain PCC 7120.Semantic proximity Read ↗

Heterocyst pattern formation controlled by a diffusible peptide.Semantic proximity Read ↗

A short-filament mutant of Anabaena sp. strain PCC 7120 that fragments in nitrogen-deficient medium.Semantic proximity Read ↗

Phenotypic Assessment Suggests Multiple Start Codons for HetN, an Inhibitor of Heterocyst Differentiation, in Anabaena sp. Strain PCC 7120.Semantic proximity Read ↗

Mutual regulation of ntcA and hetR during heterocyst differentiation requires two similar PP2C-type protein phosphatases, PrpJ1 and PrpJ2, in Anabaena sp. strain PCC 7120.Semantic proximity Read ↗

Biased inheritance of the protein PatN frees vegetative cells to initiate patterned heterocyst differentiation.Semantic proximity Read ↗

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