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Article

Requirement of Fra proteins for communication channels between cells in the filamentous nitrogen-fixing cyanobacterium Anabaena sp. PCC 7120.

Proceedings of the National Academy of Sciences of the United States of America - 11 Aug 2015

Omairi-Nasser Amin, Mariscal Vicente, Austin Jotham R, Haselkorn Robert

Abstract excerpt

The filamentous nitrogen-fixing cyanobacterium Anabaena sp. PCC 7120 differentiates specialized cells, heterocysts, that fix atmospheric nitrogen and transfer the fixed nitrogen to adjacent vegetative cells. Reciprocally, vegetative cells transfer fixed carbon to heterocysts. Several routes have been described for metabolite exchange within the filament, one of which involves communicating channels that penetrate...

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PMID: 26216997
DOI: 10.1073/pnas.1512232112
PMCID: PMC4538647

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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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Requirement of Fra proteins for communication channels between cells in the filamentous nitrogen-fixing cyanobacterium Anabaena sp. PCC 7120.PMID 26216997Read ↗

FraG is necessary for filament integrity and heterocyst maturation in the cyanobacterium Anabaena sp. strain PCC 7120.Semantic proximity Read ↗

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Septum-localized protein required for filament integrity and diazotrophy in the heterocyst-forming cyanobacterium Anabaena sp. strain PCC 7120.Semantic proximity Read ↗

Role of Two Cell Wall Amidases in Septal Junction and Nanopore Formation in the Multicellular Cyanobacterium Anabaena sp. PCC 7120.Semantic proximity Read ↗

Anabaena sp. strain PCC 7120 gene devH is required for synthesis of the heterocyst glycolipid layer.Semantic proximity Read ↗

Specific Glucoside Transporters Influence Septal Structure and Function in the Filamentous, Heterocyst-Forming Cyanobacterium Anabaena sp. Strain PCC 7120.Semantic proximity Read ↗

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Early candidacy for differentiation into heterocysts in the filamentous cyanobacterium Anabaena sp. PCC 7120.Semantic proximity Read ↗

Role for hetC in the transition to a nondividing state during heterocyst differentiation in Anabaena sp.Semantic proximity Read ↗

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

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