Role of calcium and calmodulin in protein phosphorylation and auxin induced cell elongation
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Role of calcium and calmodulin in protein phosphorylation and auxin induced cell elongation

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Published .
Written in English


  • Plants -- Effect of calcium on.,
  • Calmodulin -- Physiological effect.

Book details:

Edition Notes

Statementby Kashchandra G. Raghothama.
The Physical Object
Paginationix, 92 leaves, bound :
Number of Pages92
ID Numbers
Open LibraryOL16624517M

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Sea urchin mitotic apparatuses (MAs) were isolated in a microtubule stabilizing buffer that contained detergent. These isolated MAs contain a calcium and calmodulin-dependent protein kinase that phosphorylates one specific MA-associated endogenous substrate with a relative molecular mass of 62 kd. No protein phosphorylation occurs in the presence of calcium or magnesium ion alone, or when Cited by:   Raghothama KG, Mizrahi Y, Poovaiah BW () Effect of calmodulin antagonists on auxin induced elongation. Plant Physiol –33 PubMed CrossRef Google Scholar Ranty B, Aldon D, Galaud J-P () Plant calmodulins and calmodulin-related proteins multifaceted relays to decode calcium by: 5. Sessile plants have developed a very delicate system to sense diverse kinds of endogenous developmental cues and exogenous environmental stimuli by using a simple Ca2+ ion. Calmodulin (CaM) is the predominant Ca2+ sensor and plays a crucial role in decoding the Ca2+ signatures into proper cellular responses in various cellular compartments in by: Eric Ho, Jim Woodgett, in Handbook of Cell Signaling (Second Edition), A Brief History. Microtubule-Associated Protein 2 Kinase (MAPK) was the first mammalian member of the MAPK family to be discovered [1].Subsequent research found that this MAPK was activated by a number of different growth factors, and it was renamed mitogen-activated protein kinase to reflect its role in growth.

The role of Ca2+ in cold-induced changes in protein phosphorylation, gene expression, and development of freezing tolerance has been studied in cell-suspension cultures of a freezing-tolerant cultivar of alfalfa (Medicago sativa spp. falcata cv Anik). Chemical treatments to block Ca2+ channels, antagonize calmodulin action, or inhibit protein kinases markedly inhibited the cellular capacity to.   Calmodulin Definition. Calmodulin, or calcium-modulated protein, is a calcium-binding protein found in the cytoplasm of all eukaryotic cells. It interacts with many other proteins in the cell, and acts as a regulator or an effector molecule in a wide variety of cellular functions. These functions include things as diverse as regulation of the cell cycle, intracellular signalling, fertilization. Calcium/calmodulin-mediated signaling contributes in diverse roles in plant growth, development, and response to environmental stimuli. ### Glossary EF: elongation factor Ca2+: calcium CaM: calmodulin CDPK: calcium-dependent protein kinase CaMBD: calmodulin-binding domain cDNA: complementary DNA CCaMK: calcium/calmodulin-dependent protein kinase RLK: receptor-like . Raghothama KG, Mizrahi Y, Poovaiah BW. Effect of calmodulin antagonists on auxin-induced elongation. Plant Physiol. Sep; 79 (1)– [PMC free article] Veluthambi K, Poovaiah BW. Calcium- and calmodulin-regulated phosphorylation of soluble and membrane proteins from corn coleoptiles. Plant Physiol. Oct; 76 (2)–

Role of calcium–calmodulin in auxin-induced somatic embryogenesis in leaf base cultures of wheat (Triticum aestivum var. HD ) Triticum aestivum calmodulin binding protein kinase, calcium. The authors suggested that auxin action on root growth is mediated by an auxin-induced increase in the level of cytosolic free calcium ([Ca 2 +] cyt), which in turn induces growth responses. This hypothesis was verified in a later study in which auxin was shown to induce an increase in [Ca 2 + ] cyt within minutes after its application. Introduction. The auxin indole acetic acid (IAA) regulates many aspects of plant growth and development from seed germination to fruit ripening, mediating cell division, expansion, and differentiation (Davies, ).However, despite the critical role of auxins throughout the plant life cycle, the molecular mechanisms underlying their action are still poorly understood. Plant hormone auxin plays a central role in growth and development by controlling cell division, cell elongation, and cell differentiation ().Auxin-induced cell elongation, one of the fastest hormonal responses known, has been used widely as a model system to study the mechanism of auxin action ().A vast array of cellular responses to external and internal stimuli such as light and hormones.