Results 191 to 200 of about 4,364,730 (221)

The aryl hydrocarbon receptor (AHR) drives human leukocyte antigen (HLA)-II expression in human melanoma. [PDF]

J Exp Clin Cancer Res
Jin Y, Zheng W, Zhang R, Hou S, Luo C, Ren P, Pan D, Luo C, Zeng Z.   +8 more
europepmc   +1 more source

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PII Signal Transduction Proteins

Trends in Microbiology, 2000
PII proteins, found in Bacteria, Archaea and plants, help coordinate carbon and nitrogen assimilation by regulating the activity of signal transduction enzymes in response to diverse signals. Recent studies of bacterial PII proteins have revealed a solution to the signal transduction problem of how to coordinate multiple receptors in response to ...
Alexander J Ninfa, Mariette R Atkinson, M R Atkinson   +2 more
exaly   +3 more sources

An Engineered PII Protein Variant That Senses a Novel Ligand: Atomic Resolution Structure of the Complex With Citrate

Acta Crystallographica Section D: Biological Crystallography, 2012
PII proteins are central signal processing units for the regulation of nitrogen metabolism in bacteria, archaea and plants. They act in response to cellular energy, carbon and nitrogen availability.
Karl Forchhammer, Kornelius Zeth
exaly   +2 more sources

Structure of the Escherichia coli Signal Transducing Protein PII [PDF]

Structure, 1994
In Gram-negative proteobacteria, the nitrogen level in the cell is reflected by the uridylylation status of a key signal transducing protein, PII. PII modulates the activity of glutamine synthetase (GS) through its interaction with adenylyl transferase and it represses the expression of GS by acting in concert with nitrogen regulatory protein II.The ...
Subhash G Vasudevan, Nicholas E. Dixon, David Ollis   +2 more
exaly   +3 more sources

PII Signal Transduction Protein in Chlamydomonas reinhardtii: Localization and Expression Pattern

Protist, 2013
Although PII signal transduction proteins have been described in bacteria, archaea and higher plants, no PII homolog has so far been characterized in green algae. In the unicellular green alga Chlamydomonas reinhardtii, the PII protein is encoded by a single nuclear gene CrGLB1. The C.
Zhanneta Zalutskaya, Ekaterina Minaeva, Tatyana V. Lapina   +2 more
exaly   +3 more sources

The role of effector molecules in signal transduction by PII proteins

Biochemical Society Transactions, 2011
PII proteins are one of the most widely distributed signal transduction proteins in Nature, being ubiquitous in bacteria, archaea and plants. They act by protein–protein interaction to control the activities of a wide range of enzymes, transcription factors and transport proteins, the great majority of which are involved in cellular nitrogen metabolism.
Martha, Radchenko, Mike, Merrick
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Uridylylation of the PII Protein in Rhizobium leguminosarum

FEBS Letters, 1993
Giuseppe Manco, Roberto Defez, Eduardo J Patriarca   +2 more
exaly   +2 more sources

PII in higher plants: a modern role for an ancient protein

Trends in Plant Science, 2009
PII in prokaryotic organisms is a crucial integrator of cellular carbon, nitrogen and energy levels. In higher plants, however, its role remains significantly less clear. Previous findings suggest that PII-N-acetylglutamate kinase (NAGK) complex formation controls l-arginine biosynthesis, whereas other work implicates PII in regulating chloroplastic ...
R Glen, Uhrig, Kenneth K S, Ng, Greg B G, Moorhead   +2 more
openaire   +2 more sources

The PII Protein of Herbaspirillum Seropedicae

1999
The PII protein of Herbaspirillum seropedicae has been purified, crystallized and analysed for physical and biochemical properties. It is trimeric in solution, with a monomeric molecular weight of 12 kDa, comprising 112 amino acid residues, with a C-terminal loop absent from the E. coli PII.
E. M. Benelli, E. M. Souza, M. G. Yates, L. U. Rigo, M. Buck, M. Moore, A. Harper, F. O. Pedrosa   +7 more
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