Nitrogenase gene diversity and microbial community structure: a cross-system comparison.

@article{Zehr2003NitrogenaseGD,
  title={Nitrogenase gene diversity and microbial community structure: a cross-system comparison.},
  author={Jonathan P. Zehr and Bethany D. Jenkins and Steven M. Short and Grieg F. Steward},
  journal={Environmental microbiology},
  year={2003},
  volume={5 7},
  pages={
          539-54
        }
}
Biological nitrogen fixation is an important source of fixed nitrogen for the biosphere. [] Key Result The phylogeny of nitrogenase includes branches that represent phylotypic groupings based on ribosomal RNA phylogeny, but also includes paralogous clades including the alternative, non-molybdenum, non-vanadium containing nitrogenases. Only a few alternative or archaeal nitrogenase sequences have as yet been obtained from the environment.

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In the version of this Article originally published, the surname of author Sandra M. McLellan was spelt incorrectly as ‘MacLellan’. This has now been corrected. In addition, Fig. 2 was mistakenly
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