Abstract:
:Evidence is presented here that cupric ions play a part in the natural spinning of Bombyx mori silk. Proton induced X-ray emission studies revealed that the copper content increased from the posterior part to the anterior part of silk gland, and then further increased in the silk fiber. Spectrophotometric analysis demonstrated that cupric ions formed coordination complexes with silk fibroin chains while Raman spectroscopy indicated that they induced a conformation transition from random coil/helix to beta-sheet. Taken together these findings indicate that copper could play a role in the natural spinning process in silkworms.
journal_name
FEBS Lettjournal_title
FEBS lettersauthors
Zhou L,Chen X,Shao Z,Zhou P,Knight DP,Vollrath Fdoi
10.1016/s0014-5793(03)01184-0keywords:
subject
Has Abstractpub_date
2003-11-20 00:00:00pages
337-41issue
3eissn
0014-5793issn
1873-3468pii
S0014579303011840journal_volume
554pub_type
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