13C CP/MAS NMR Spectroscopic Characterization of Native Silk Fibers

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Differences in secondary structure among Bombyx mori (B. mori) silk and two wild silks of Antheraea yamamai (A. yamamai) and Antheraea pernyi (A. pernyi) were investigated by CP/MAS 13C NMR Spectroscopy. The β-sheet structure was primary in three silk, and B. mori silk had the highest β-sheet structure. Although amino acid compositions are very similar for two wild silk, their secondary structures had significant difference. A. yamamai silk contained more α-helix structure, whereas more β-turn and random coil structures formed in A. pernyi silk. B. mori silk was mainly composed of anti-parallel β-sheet structure, however, the parallel β-sheet structure was advantage in the two wild silks, and A. yamamai silk contained more anti-parallel β-sheet conformation than A. pernyi silk.

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Periodical:

Advanced Materials Research (Volumes 175-176)

Main Theme:

Edited by:

Lun Bai and Guo-Qiang Chen

Pages:

328-332

DOI:

10.4028/www.scientific.net/AMR.175-176.328

Citation:

W. Zhang et al., "13C CP/MAS NMR Spectroscopic Characterization of Native Silk Fibers", Advanced Materials Research, Vols. 175-176, pp. 328-332, 2011

Online since:

January 2011

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$35.00

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