Ethylene Receptors
Mostrando 13-24 de 31 artigos, teses e dissertações.
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13. Canonical histidine kinase activity of the transmitter domain of the ETR1 ethylene receptor from Arabidopsis is not required for signal transmission
Ethylene signaling in plants is mediated by a family of receptors related to bacterial two-component histidine kinases. Of the five members of the Arabidopsis ethylene receptor family, members of subfamily I (ETR1 and ERS1) contain completely conserved histidine kinase domains, whereas members of subfamily II (ETR2, EIN4, and ERS2) lack conserved residues th
The National Academy of Sciences.
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14. ETR1-Specific Mutations Distinguish ETR1 from Other Arabidopsis Ethylene Receptors as Revealed by Genetic Interaction with RTE11[C][W]
American Society of Plant Biologists.
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15. Association of the Arabidopsis CTR1 Raf-like kinase with the ETR1 and ERS ethylene receptors
In Arabidopsis thaliana, signal transduction of the hormone ethylene involves at least two receptors, ETR1 and ERS, both of which are members of the two-component histidine protein kinase family that is prevalent in prokaryotes. The pathway also contains a negative regulator of ethylene responses, CTR1, which closely resembles members of the Raf protein kina
The National Academy of Sciences.
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16. Evidence for Serine/Threonine and Histidine Kinase Activity in the Tobacco Ethylene Receptor Protein NTHK21
Ethylene plays important roles in plant growth, development, and stress responses. Two ethylene receptors, ETR1 from Arabidopsis and NTHK1 from tobacco (Nicotiana tabacum), have been found to have His kinase (HK) activity and Ser/Thr kinase activity, respectively, although both show similarity to bacterial two-component HK. Here, we report the characterizati
American Society of Plant Biologists.
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17. Activation of a Stress-Responsive Mitogen-Activated Protein Kinase Cascade Induces the Biosynthesis of Ethylene in Plants
Plants under stress from both biotic and abiotic sources produce increased levels of ethylene, which is perceived by ethylene receptors and triggers cellular responses further downstream. Protein phosphorylation and dephosphorylation were implicated in the regulation of ethylene induction by stresses based on studies using protein kinase and phosphatase inhi
American Society of Plant Biologists.
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18. Histidine kinase activity of the ETR1 ethylene receptor from Arabidopsis
ETR1 represents a prototypical ethylene receptor. Homologues of ETR1 have been identified in Arabidopsis as well as in other plant species, indicating that ethylene perception involves a family of receptors and that the mechanism of ethylene perception is conserved in plants. The amino-terminal half of ETR1 contains a hydrophobic domain responsible for ethyl
The National Academy of Sciences.
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19. Molecular Interactions between the Specialist Herbivore Manduca sexta (Lepidoptera, Sphingidae) and Its Natural Host Nicotiana attenuata. IV. Insect-Induced Ethylene Reduces Jasmonate-Induced Nicotine Accumulation by Regulating Putrescine N-Methyltransferase Transcripts12
Attack by the specialist herbivore, Manduca sexta, on its native host Nicotiana attenuata Torr. ex Wats. produces a dramatic ethylene release, a jasmonate burst, and a suppression of the nicotine accumulation that results from careful simulations of the herbivore's damage. Methyl-jasmonate (MeJA) treatment induces nicotine biosynthesis. However, this in
American Society of Plant Physiologists.
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20. Involvement of envelope-bound calcium in the transient depolarization of the Escherichia coli cytoplasmic membrane induced by bacteriophage T4 and T5 adsorption.
We previously showed that adsorption of bacteriophages T4 and T5 to their respective outer membrane receptors induced a partial depolarization of the cytoplasmic membrane. As these membrane potential changes were independent of phage properties, we proposed that phage adsorption triggered the emission of a signal which must be transmitted between the two mem
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21. Developmental Abnormalities and Reduced Fruit Softening in Tomato Plants Expressing an Antisense Rab11 GTPase Gene
A cDNA clone from tomato fruit encodes a protein with strong homology with the rab11/YPT3 class of small GTPases that is thought to be involved in the control of protein trafficking within cells. The gene, LeRab11a, showed a pattern consistent with a single copy in DNA gel blots. The corresponding mRNA was developmentally regulated during fruit ripening, and
American Society of Plant Biologists.
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22. Receptors for human gamma interferon: binding and crosslinking of 125I-labeled recombinant human gamma interferon to receptors on WISH cells.
Purified recombinant human gamma interferon (HuIFN-gamma), labeled with 125I (125I-HuIFN-gamma), was used to study receptors for HuIFN-gamma on human WISH cells. 125I-HuIFN-gamma was bound to WISH cells, and this binding was displaced by unlabeled HuIFN-gamma but not by unlabeled recombinant HuIFN-alpha 2 or [Ser17]HuIFN-beta (HuIFN-beta with serine substitu
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23. Adsorption of the tailed mycoplasma virus L3 to cell membranes.
The adsorption properties of the tailed bacteriophage L3 to Acholeplasma laidlawii cells were studied. Adsorption followed a biphasic curve. Reversibility and virus heterogeneity were not sufficient to explain the break in the adsorption curve. Binding studies showed that each colony-forming unit could bind about 350 virions. The electrostatic nature of L3 a
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24. Mimics of the binding sites of opioid receptors obtained by molecular imprinting of enkephalin and morphine.
Molecular imprinting of morphine and the endogenous neuropeptide [Leu5]enkephalin (Leu-enkephalin) in methacrylic acid-ethylene glycol dimethacrylate copolymers is described. Such molecular imprints possess the capacity to mimic the binding activity of opioid receptors. The recognition properties of the resultant imprints were analyzed by radioactive ligand