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Calmodulin as aversatile calciumsignal transducer inplants Wayne A. SneddenHillel Fromm2001 год

Calmodulin as a versatile calcium signal transducer in plants
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Аннотация: Summary The complexity of Ca 2+ patterns observed in eukaryotic cells, including plants, has led to the hypothesis that specific patterns of Ca 2+ propagation, termed Ca 2+ signatures, encode information and relay it to downstream elements (effectors) for translation into appropriate cellular responses. Ca 2+ ‐binding proteins (sensors) play a key role in decoding Ca 2+ signatures and transducing signals by activating specific targets and pathways. Calmodulin is a Ca 2+ sensor known to modulate the activity of many mammalian proteins, whose targets in plants are now being actively characterized. Plants possess an interesting and rapidly growing list of calmodulin targets with a variety of cellular roles. Nevertheless, many targets appear to be unique to plants and remain uncharacterized, calling for a concerted effort to elucidate their functions. Moreover, the extended family of calmodulin‐related proteins in plants consists of evolutionarily divergent members, mostly of unknown function, although some have recently been implicated in stress responses. It is hoped that advances in functional genomics, and the research tools it generates, will help to explain themultiplicity of calmodulin genes in plants, and to identify their downstream effectors. This review summarizes current knowledge of the Ca 2+ –calmodulin messenger system in plants and presents suggestions for future areas of research. Contents I. Introduction 36 II. CaM isoforms and CaM‐like proteins 37 III. CaM‐target proteins 42 IV. CaM and nuclear functions 46 V. Regulation of ion transport 49 VI. CaM and plant responses to environmental stimuli 52 VII. Conclusions and future studies 58 Acknowledgements 59 References 59
Год издания: 2001
Авторы: Wayne A. Snedden, Hillel Fromm
Издательство: Wiley
Источник: New Phytologist
Ключевые слова: Plant Stress Responses and Tolerance, Plant Molecular Biology Research, GABA and Rice Research