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J. Bacteriol., 12 1997, 7872-7874, Vol 179, No. 24
Copyright © 1997, American Society for Microbiology

Dinitrogenase reductase-activating glycohydrolase can be released from chromatophores of Rhodospirillum rubrum by treatment with MgGDP

A Noren and S Nordlund
Department of Biochemistry, Arrhenius Laboratories for Natural Sciences, Stockholm University, Sweden.

Dinitrogenase reductase-activating glycohydrolase (DRAG), involved in the regulation of nitrogenase activity in Rhodospirillum rubrum, is associated with chromatophore membranes in cell extracts. We show that DRAG can be specifically released by treatment with MgGDP; other nucleotides studied had no effect. The DRAG activity released corresponds to the release of DRAG protein.


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