ISSN:
1436-2449
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Summary 50.3 MHz 13C NMR cross-polymerization/magic angle spinning spectra of the raw silk of the mulberry silk moth (bombyx mori) and of crystalline silk fibroin were compared with those of synthetic copolypeptides of alanine and glycine. In crude silk, but not in crystalline fibroin , tyrosine, valine,aspartic acid and glutamic acid were detected in addition to alanine, glycine and serine. Furthermore, crude silk obviously contains ca. 10 % of an α-helix fraction which mainly consists of Ala-units. A small α-helix fraction (ca. 5 %) was also detected in the raw silk of the tussah silk moth (antheraea mylitta).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00262720
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