Single chain conformations

In ebook "Single-molecule fluorescence spectroscopy of the folding of a repeat protein" single-molecule fluorescence resonance energy transfer (FRET) spectroscopy was used to study the folding of a protein that belongs to the large and important family of repeat proteins. Cohen shows that the dynamics of the expanded conformations is likely to be very fast, suggesting a spring-like motion of the whole chain. The findings shed new light on the elasticity of structure in repeat proteins, which is related to their function in binding multiple and disparate partners.

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Ebook "Polymer physics" introduces the reader to the fascinating field of polymer physics. It is intended to be utilized as a textbook for teaching upper level undergraduates and first year graduate students about polymers. Any student with a working knowledge of calculus, chemistry, and physics should be able to read this book. The essential tools of the polymer physical chemist or engineer are derived in this book without skipping any steps.

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Ebook "The physics of polymers: Concepts for understanding their structures and behavior" presents the elements of this important branch of materials science in the style of a series of lecture. The main focus lays on the concepts, rather than on experimental techniques and theoretical methods. Written for graduate students of physics, materials science and chemical engineering, as well as for researchers in academia and industry entering this field, the book introduces and discusses the basic phenomena that lead to the peculiar physical properties of polymeric systems.

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Ascorbic acid is often regarded as an antioxidantin vivo, where it protects against cancer by scavenging DNA-dam-aging reactive oxygen species. However, the detailed mech-anism of the action of ascorbic acid on genetic DNA is still unclear. We examined the effect of ascorbic acid on the higher-order structure of DNA through real-time observa-tion by fluorescence microscopy. We found that ascorbic acid generates a pearling structure in single giant DNA molecules, with elongated and compact regions coexisting along a molecular chain. ...

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