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Investigation of Molecular Motion in Collagen Using the Spin-probe Technique by T. Nagamura; A. E. Woodward is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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## Abstract The spin‐probe technique was employed to study molecular motion in collagen and modified collagen samples in the −160° to +200°C region. The effect of water content in the 0–30‐wt. % range, relative to vacuum dried samples, on the electron spin resonance spectrum of the probe was also investigated. The spectra at the lowest temperatures consisted of a broad asymmetric triplet. Narrowing of this triplet above −40° to −70°C and the appearance of additional lines in the spectrum, interpreted as due to a narrow triplet, at a temperature dependent on the water content were observed. For samples with low water contents [(0–0.4)%] the broad triplet was that expected for a glassy system up to 150–190°C; for these samples the narrow triplet appears at a temperature above 50°C, its intensity increasing with increasing temperature up to 70–100°C, then decreasing with a further temperature increase. For samples with water contents near 30%, the narrow triplet first completely appears at about 0°C, and reaches relative intensities of 35% at 30°C. The motion taking place in collagen and related samples is discussed in terms of these results.

Who reads Investigation of Molecular Motion in Collagen Using the Spin-probe Technique?

Author

T. Nagamura; A. E. Woodward

Publisher

Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0006-3525)

Published

1977

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)