Distinct and differently regulated Mo-dependent nitrogen-fixing systems evolved for heterocysts and vegetative cells of Anabaena variabilis ATCC 29413: characterization of the fdxH1/2 gene regions as part of the nif1/2 gene clusters.

@article{Schrautemeier1995DistinctAD,
  title={Distinct and differently regulated Mo-dependent nitrogen-fixing systems evolved for heterocysts and vegetative cells of Anabaena variabilis ATCC 29413: characterization of the fdxH1/2 gene regions as part of the nif1/2 gene clusters.},
  author={Bernard Schrautemeier and Ute Neveling and Stefan Schmitz},
  journal={Molecular microbiology},
  year={1995},
  volume={18 2},
  pages={357-69}
}
Two different fdxH genes (fdxH1, fdxH2) have been isolated from the nitrogen-fixing, heterocyst-forming cyanobacterium Anabaena variabilis ATCC 29413. They are part of two different nif gene clusters, nif1 and nif2. fdxH1 encodes the [2Fe-2S] ferredoxin that is known as the direct electron donor to nitrogenase in heterocysts, and is very similar to FdxH from Anabaena sp. PCC 7120. FdxH2 has more residues in common and shares its oxygen sensitivity with the single FdxH from the non-heterocystous… CONTINUE READING
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