Abstract
GRAVIMETRIC hydrogen exchange measurements with purified wool confirm an estimate1 of the amount of crystalline α-helical material in keratin fibres made from measurements of the intensities of the wide angle X-ray diffraction pattern. Between 90 and 95 per cent of the cross sectional area of wool is occupied by cortical cells and these cells are largely filled with the characteristic keratin matrix-microfibril structure2. The deuterium exchange technique may therefore give an approximate estimate of the proportion of crystalline α-helical material in the matrix-microfibril composite structure.
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JORDAN, B., SPEAKMAN, P. Deuterium Exchange in Wool. Nature 215, 1194–1195 (1967). https://doi.org/10.1038/2151194a0
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DOI: https://doi.org/10.1038/2151194a0
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