Role of PII proteins in nitrogen fixation control of Herbaspirillum seropedicae strain SmR1 |
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| Authors: | Lilian Noindorf Ana C Bonatto Rose A Monteiro Emanuel M Souza Liu U Rigo Fabio O Pedrosa Maria BR Steffens Leda S Chubatsu |
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| Affiliation: | (1) National Institute of Science and Technology for Biological Nitrogen Fixation, Department of Biochemistry and Molecular Biology, Universidade Federal do Paran?, CP 19046, 81531-980 Curitiba, PR, Brazil;(2) Department of Genetics, Universidade Federal do Paran?, CP 19071, 81531-980 Curitiba, PR, Brazil |
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| Abstract: | 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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