2 results match your criteria: "National Institute of Science and Technology for Biological Nitrogen Fixation[Affiliation]"

Role of PII proteins in nitrogen fixation control of Herbaspirillum seropedicae strain SmR1.

BMC Microbiol

January 2011

National Institute of Science and Technology for Biological Nitrogen Fixation, Department of Biochemistry and Molecular Biology, Universidade Federal do Paraná, CP 19046, Curitiba, PR, 81531-980, Brazil.

Background: The PII protein family comprises homotrimeric proteins which act as transducers of the cellular nitrogen and carbon status in prokaryotes and plants. In Herbaspirillum seropedicae, two PII-like proteins (GlnB and GlnK), encoded by the genes glnB and glnK, were identified. The glnB gene is monocistronic and its expression is constitutive, while glnK is located in the nlmAglnKamtB operon and is expressed under nitrogen-limiting conditions.

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This study was aimed at describing the spectrum and dynamics of proteins associated with the membrane in the nitrogen-fixing bacterium Herbaspirillum seropedicae according to the availability of fixed nitrogen. Using two-dimensional electrophoresis we identified 79 protein spots representing 45 different proteins in the membrane fraction of H. seropedicae.

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