| Signal transduction and amplification in a circadian oscillator: interaction between two colored noises. | |
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MedLine Citation:
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PMID: 20665968 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The signal transduction and amplification in a Neurospora circadian clock system is studied by using the mechanism of internal signal stochastic resonance (ISSR). Two cases have been investigated: the case of no correlations between multiplicative and additive colored noises and the case of correlations between two noises. The results show that, in both cases, the noise-induced circadian oscillations can be transduced with the phenomenon of internal signal stochastic resonance (ISSR). However, the correlation time and intensity of an additive colored noise play different roles for the ISSR, driven by multiplicative colored noise, while the correlation time and intensity of multiplicative colored noise hardly influence the ISSR driven by additive colored noise. In addition, the ISSR can be amplified or suppressed at an appropriate range of the correlation intensity between two colored noises. The fundamental frequency of noise-induced circadian oscillations is hardly shifted with the increment of the intensity and correlation time of colored noises, which implies that the Neurospora system could be resistant to colored noises, exhibit strong vitality and sustain intrinsic circadian rhythms. |
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Authors:
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Shi Jian-Cheng |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of theoretical biology Volume: 265 ISSN: 1095-8541 ISO Abbreviation: J. Theor. Biol. Publication Date: 2010 Aug |
Date Detail:
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Created Date: 2010-07-27 Completed Date: 2010-10-19 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0376342 Medline TA: J Theor Biol Country: England |
Other Details:
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Languages: eng Pagination: 565-71 Citation Subset: IM |
Affiliation:
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College of Chemistry and Life Sciences, Guangxi Teachers Education University, MingXiu Road 175, Nanning, People's Republic of China. mfai668@sina.com |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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CLOCK Proteins
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genetics,
metabolism Circadian Rhythm / genetics, physiology*, radiation effects Gene Expression Regulation, Fungal / radiation effects Genes, Fungal / genetics Humidity* Kinetics Light* Models, Biological Neurospora / genetics, physiology*, radiation effects RNA, Messenger / genetics, metabolism Signal Transduction* / genetics, radiation effects Temperature* Time Factors |
| Chemical | |
Reg. No./Substance:
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0/RNA, Messenger; EC 2.3.1.48/CLOCK Proteins |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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