ArticleJournal of bacteriology2010
RNA processing of nitrogenase transcripts in the cyanobacterium Anabaena variabilis.
Article in Journal of bacteriology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
14 citing papers in PubMed, 37 citations in OpenAlex.
- Exploring the regulatory potential of RNA structures in 202 cyanobacterial genomes.Nucleic acids research · 2026Article
- Cross-Activation of Two Nitrogenase Gene Clusters by CnfR1 or CnfR2 in the Cyanobacterium Anabaena variabilis.Microbiology spectrum · 2021Article
- Comparative genomic insights into culturable symbiotic cyanobacteria from the water fernMicrobial genomics · 2021Article
- RNA helicase-regulated processing of theThe Journal of biological chemistry · 2020Article
- Regulatory systems for gene expression control in cyanobacteria.Applied microbiology and biotechnology · 2020Review
- Role of the nifB1 and nifB2 Promoters in Cell-Type-Specific Expression of Two Mo Nitrogenases in the Cyanobacterium Anabaena variabilis ATCC 29413.Journal of bacteriology · 2017Article
- Article
- Role of RNA secondary structure and processing in stability of the nifH1 transcript in the cyanobacterium Anabaena variabilis.Journal of bacteriology · 2015Article
- Regulation of Three Nitrogenase Gene Clusters in the Cyanobacterium Anabaena variabilis ATCC 29413.Life (Basel, Switzerland) · 2014Review
- Regulation of nitrogenase gene expression by transcript stability in the cyanobacterium Anabaena variabilis.Journal of bacteriology · 2014Article
- Complete genome sequence of Anabaena variabilis ATCC 29413.Standards in genomic sciences · 2014Article
- Transcriptional regulators ChlR and CnfR are essential for diazotrophic growth in nonheterocystous cyanobacteria.Proceedings of the National Academy of Sciences of the United States of America · 2014Article
- Directional RNA deep sequencing sheds new light on the transcriptional response of Anabaena sp. strain PCC 7120 to combined-nitrogen deprivation.BMC genomics · 2011Article
- The sigE gene is required for normal expression of heterocyst-specific genes in Anabaena sp. strain PCC 7120.Journal of bacteriology · 2011Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Little is known about the regulation of nitrogenase genes in cyanobacteria. Transcription of the nifH1 and vnfH genes, encoding dinitrogenase reductases for the heterocyst-specific Mo-nitrogenase and the alternative V-nitrogenase, respectively, was studied by using a lacZ reporter. Despite evidence for a transcription start site just upstream of nifH1 and vnfH, promoter fragments that included these start sites did not drive the transcription of lacZ and, for nifH1, did not drive the expression of nifHDK1. Further analysis using larger regions upstream of nifH1 indicated that a promoter within nifU1 and a promoter upstream of nifB1 both contributed to expression of nifHDK1, with the nifB1 promoter contributing to most of the expression. Similarly, while the region upstream of vnfH, containing the putative transcription start site, did not drive expression of lacZ, the region that included the promoter for the upstream gene, ava4055, did. Characterization of the previously reported nifH1 and vnfH transcriptional start sites by 5'RACE (5' rapid amplification of cDNA ends) revealed that these 5' ends resulted from processing of larger transcripts rather than by de novo transcription initiation. The 5' positions of both the vnfH and nifH1 transcripts lie at the base of a stem-loop structure that may serve to stabilize the nifHDK1 and vnfH specific transcripts compared to the transcripts for other genes in the operons providing the proper stoichiometry for the Nif proteins for nitrogenase synthesis.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.