The Tubular Structure of Collagen Fibril

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概要

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• 1. The X-ray scattering has been measured for moist and dry collagens of fowl-neck tendon, untreated or treated with formaldehyde or acetic acid. Some modifications of the collagen fibril were also examined by electron microscope.<BR>2. The wide-angle scattering data are compatible with a structure consisting of crystalline and amorphous parts. The intensity distribution of the small-angle diffraction is interpreted by a helical groove structure. The Fourier transform calculated for this model is shown.<BR>3. The electron micrographs show that collagen fibril has a kind of tubular structure with a circular or flat and coiled cross section.<BR>4. The data are discussed with respect to the assumption that collagen fibril is composed of a woven sheet of polypeptide chains in which the crystalline and amorphous parts occur alternatively.<BR>5. A reasonable assignment of hydration to the helical groove is possible; this gives the fibril an approximately uniform electron density in the moist state.

• 公益社団法人 日本化学会の論文

著者

• Haisa Masao

  Department of Chemistry Faculty of Science Kwansei Gakuin University

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