Aspects of X-ray diffraction on single spider fibers

被引：149

作者：

Riekel, C

Bränden, C

Craig, C

Ferrero, C

Heidelbach, F

Müller, M

机构：

[1] European Synchrotron Radiat Facil, F-38043 Grenoble, France

[2] Karolinska Inst, Ctr Microbiol & Tumor Biol, S-17177 Stockholm, Sweden

[3] Harvard Univ, Museum Comparat Zool Labs, Cambridge, MA 02138 USA

来源：

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 1999年 / 24卷 / 2-3期

关键词：

X-ray microdiffraction; synchrotron radiation; spider silk;

D O I：

10.1016/S0141-8130(98)00084-1

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Diffraction patterns of silk from several spider species have been obtained by synchrotron radiation using a beam size greater than or equal to 10 mu m. Single fiber diffraction patterns were obtained for fiber diameters down to a few microns. Diffraction patterns recorded with a 10 mu m wide X-ray beam displayed fiber texture. The presence of two fractions of different crystallinity was confirmed for a single Nephila clavipes fiber. The orientation distribution of the polymer chains of the crystalline fraction along the fiber axis was found to be about 23 degrees full-width at half maximum (fwhm). The azimuthal spread of the short-range order fraction was about 86 degrees fwhm. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：179 / 186

页数：8

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