ArticleFunctional & integrative genomics2014
Arsenic and cadmium are inhibitors of cyanobacterial dinitrogenase reductase (nifH1) gene.
Article in Functional & integrative genomics, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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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.
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Who cites it
2 citing papers in PubMed, 18 citations in OpenAlex.
- Elevated level of arsenic negatively influences nifH gene expression of isolated soil bacteria in culture condition as well as soil system.Environmental geochemistry and health · 2019Article
- Seagrass (Zostera marina) Colonization Promotes the Accumulation of Diazotrophic Bacteria and Alters the Relative Abundances of Specific Bacterial Lineages Involved in Benthic Carbon and Sulfur Cycling.Applied and environmental microbiology · 2015Article
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Authors and funding
3 authors at 2 institutions in 1 country.
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Abstract
The enzyme nitrogenase complex is a key component conferring nitrogen fixation in all known diazotrophs. This study for the first time examines the impact of As, Na, Cd, Cu and butachlor on component II (dinitrogenase reductase, nifH1) of nitrogenase from diazotrophic cyanobacterium Anabaena sp. PCC7120 using in silico and wet lab approaches. The nifH1 of Anabaena is a glycine-rich stable protein having DNA-binding properties and shows close similarity with free living compared with symbiotic diazotrophs. Phylogenetic tree revealed an adverse effect of the selected stresses on close homologs across the diazotroph community. The protein interaction network demonstrated the presence of nirA, glnA, glnB, alr4255 and alr2485 proteins besides nif proteins, suggesting their involvement in nitrogen fixation along with nifH1. Homology modelling and docking under As, Na, Cd, Cu and butachlor revealed an interaction between stressors and nifH1 protein which was further validated by a transcript of the gene through quantitative real-time PCR (qRT-PCR). Presence of binding sites for As, Na, Cd and Cu on oxyR promoter attested their adverse affects on nifH1. Maximum down-regulation of nifH1 in Cd and As followed by salt, copper and butachlor revealed that arsenic and cadmium were most potential inhibitors of nitrogenase of diazotrophic community, which might negatively affect crop yield.
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