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Pulsed field gradient NMR and nuclear magnetic relaxation studies of water mobility in hydrated collagen II

✍ Scribed by Robert Knauss; Gerald Fleischer; Wilfried Gründer; Jörg Kärger; Annett Werner

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
822 KB
Volume
36
Category
Article
ISSN
0740-3194

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✦ Synopsis

Abstract

Transverse nuclear magnetic relaxation and self‐diffusion of water were measured in hydrated collagen II. Self‐diffusion measurements were conducted by pulsed field gradient NMR (PFG NMR) and weighting of the different species in the signal by variable T~2~ relaxation in the experiment. Two fractions of water protons were detected, one with a short T~2~ value but high diffusivity and one with a long T~2~ value and low, completely restricted diffusion. The distance of the diffusion barriers was determined to be 2.3 μm. Possible reasons for the restriction in the movement of the water molecules in comparison with structural models of collagen II are discussed.

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