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000060039 0247_ $$2DOI$$a10.1073/pnas.0705513104
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000060039 084__ $$2WoS$$aMultidisciplinary Sciences
000060039 1001_ $$0P:(DE-HGF)0$$aSemmrich, C.$$b0
000060039 245__ $$aGlass transition and rheological redundancy in F-actin solutions (from the cover)
000060039 260__ $$aWashington, DC$$bAcademy$$c2007
000060039 300__ $$a20199 - 20203
000060039 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article
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000060039 440_0 $$05100$$aProceedings of the National Academy of Sciences of the United States of America$$v104$$x0027-8424
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000060039 520__ $$aThe unique mechanical performance of animal cells and tissues is attributed mostly to their internal biopolymer meshworks. Its perplexing universality and robustness against structural modifications by drugs and mutations is an enigma in cell biology and provides formidable challenges to materials science. Recent investigations could pinpoint highly universal patterns in the soft glassy rheology and nonlinear elasticity of cells and reconstituted networks. Here, we report observations of a glass transition in semidilute F-actin solutions, which could hold the key to a unified explanation of these phenomena. Combining suitable rheological protocols with high-precision dynamic light scattering, we can establish a remarkable rheological redundancy and trace it back to a highly universal exponential stretching of the single-polymer relaxation spectrum of a "glassy wormlike chain." By exploiting the ensuing generalized time-temperature superposition principle, the time domain accessible to microrheometry can be extended by several orders of magnitude, thus opening promising new metrological opportunities.
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000060039 650_2 $$2MeSH$$aActins: chemistry
000060039 650_2 $$2MeSH$$aAnimals
000060039 650_2 $$2MeSH$$aGlass: chemistry
000060039 650_2 $$2MeSH$$aPhase Transition
000060039 650_2 $$2MeSH$$aRabbits
000060039 650_2 $$2MeSH$$aRheology
000060039 650_2 $$2MeSH$$aSolutions
000060039 650_2 $$2MeSH$$aTemperature
000060039 650_7 $$00$$2NLM Chemicals$$aActins
000060039 650_7 $$00$$2NLM Chemicals$$aSolutions
000060039 650_7 $$2WoSType$$aJ
000060039 65320 $$2Author$$abiopolymers
000060039 65320 $$2Author$$alight scattering
000060039 65320 $$2Author$$anonlinear rheology
000060039 65320 $$2Author$$awormlike chain
000060039 7001_ $$0P:(DE-HGF)0$$aStorz, T.$$b1
000060039 7001_ $$0P:(DE-HGF)0$$aGlaser, J.$$b2
000060039 7001_ $$0P:(DE-Juel1)128833$$aMerkel, R.$$b3$$uFZJ
000060039 7001_ $$0P:(DE-HGF)0$$aBausch, A. R.$$b4
000060039 7001_ $$0P:(DE-HGF)0$$aKroy, K.$$b5
000060039 773__ $$0PERI:(DE-600)1461794-8$$a10.1073/pnas.0705513104$$gVol. 104, p. 20199 - 20203$$p20199 - 20203$$q104<20199 - 20203$$tProceedings of the National Academy of Sciences of the United States of America$$v104$$x0027-8424$$y2007
000060039 8567_ $$2Pubmed Central$$uhttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC2154408
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