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Journal of Bacteriology, October 2002, p. 5805-5809, Vol. 184, No. 20
0021-9193/02/$04.00+0     DOI: 10.1128/JB.184.20.5805-5809.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.

Evidence for Conformational Protection of Nitrogenase against Oxygen in Gluconacetobacter diazotrophicus by a Putative FeSII Protein

Alejandro Ureta and Stefan Nordlund*

Department of Biochemistry and Biophysics, The Arrhenius Laboratories for Natural Sciences, Stockholm University, SE-106 91 Stockholm, Sweden

Received 4 February 2002/ Accepted 15 July 2002

The mechanisms protecting nitrogenase in Gluconacetobacter diazotrophicus from damage by oxygen were studied. Evidence is provided suggesting that in G. diazotrophicus these mechanisms include respiratory protection as well as conformational protection in which a putative FeSII Shethna protein is involved.

* Corresponding author. Mailing address: Department of Biochemistry and Biophysics, The Arrhenius Laboratories for Natural Sciences, Stockholm University, SE-106 91 Stockholm, Sweden. Phone: 46 8 16 2932. Fax: 46 8 15 7794. E-mail: stefan{at}dbb.su.se.

Journal of Bacteriology, October 2002, p. 5805-5809, Vol. 184, No. 20
0021-9193/02/$04.00+0     DOI: 10.1128/JB.184.20.5805-5809.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.



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