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Crystal Structure of the Cyanobacterial Signal Transduction Protein PII in Complex with PipX
Journal of Molecular Biology, 2010P(II) proteins are highly conserved signal transducers in bacteria, archaea, and plants. They have a large flexible loop (T-loop) that adopts different conformations after covalent modification or binding to different effectors to regulate the functions of diverse protein partners.
Meng-Xi, Zhao +5 more
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Purification and Characterization of the PII Protein from H. seropedicae
1998Nitrogen metabolism in enterobacteriaceae is controlled by a regulatory cascade in which the PII protein is a transducer of nitrogen levels and modulates the activities of NtrB and GlnE proteins. In Herbaspirillum seropedicae a glnB mutant has a Nif negative phenotype. The results suggest that in H.
E. M. Benelli +7 more
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PII signaling proteins of cyanobacteria and green algae. New features of conserved proteins
Russian Journal of Plant Physiology, 2013The characteristics of signal PII proteins identified in bacteria, archaea, and plants are presented. Special attention is paid to the properties and functions of PII proteins in microorganisms with oxygenic photosynthesis type: cyanobacteria and unicellular green algae. The structure and regulation of PII proteins are reviewed.
E. V. Ermilova, K. Forchhammer
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Planta, 2005
The PII signal transducing protein is involved in carbon/nitrogen (C/N) sensing in bacteria and cyanobacteria. In higher plants the function of the PII homolog GLB1 is not known. GLB1 transcripts were found in all plant organs tested, while in Arabidopsis leaves GLB1 expression and PII protein levels were not significantly affected by either the day ...
Ferrario-Méry, Sylvie +5 more
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The PII signal transducing protein is involved in carbon/nitrogen (C/N) sensing in bacteria and cyanobacteria. In higher plants the function of the PII homolog GLB1 is not known. GLB1 transcripts were found in all plant organs tested, while in Arabidopsis leaves GLB1 expression and PII protein levels were not significantly affected by either the day ...
Ferrario-Méry, Sylvie +5 more
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PII signal transduction proteins: sensors of α-ketoglutarate that regulate nitrogen metabolism
Current Opinion in Microbiology, 2005PII proteins are small homotrimeric signal transduction proteins that regulate the activities of metabolic enzymes and permeases, and control the activities of signal transduction enzymes. The protein family shows high conservation, with examples in eukaryota (plants and eukaryotic algae), archaea, and bacteria.
Alexander J, Ninfa, Peng, Jiang
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Membrane Sequestration of PII Proteins and Nitrogenase Regulation in Rhodobacter capsulatus
2008In the photosynthetic bacterium Rhodobacter capsulatus, the post-translational regulation of the MoFe nitrogenase is deficient in a strain with a kanamycin insertion in amtB, a gene coding for an ammonium channel (Yakunin and Hallenbeck, 2002). GlnB and GlnK, two homologues of the PII protein, are also involved in this regulatory process since there is
P. -L. Tremblay +3 more
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Reduction of PII signaling protein enhances lipid body production in Chlamydomonas reinhardtii
Plant Science, 2015In all examined organisms that have the PII signal transduction machinery, PII coordinates the central C/N anabolic metabolism. In green algae and land plants, PII is localized in the chloroplast and controls the L-arginine biosynthetic pathway pathway.
Zhanneta, Zalutskaya +3 more
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2019
The signaling transduction proteins of PII superfamily are one of the ancient and highly conserved protein families in nature and widely distributed in all domains of life. Canonical PII exerts it’s signaling function via the binding of small effector molecules, including ATP, ADP, and 2-oxoglutarate (2-OG). All cyanobacteria contain a PII homologue of
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The signaling transduction proteins of PII superfamily are one of the ancient and highly conserved protein families in nature and widely distributed in all domains of life. Canonical PII exerts it’s signaling function via the binding of small effector molecules, including ATP, ADP, and 2-oxoglutarate (2-OG). All cyanobacteria contain a PII homologue of
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Control of the PII protein in the glutamine synthetase adenylylation cascade
1994International ...
van Heeswijk, W.C. +5 more
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