Copper in the silk formation process of Bombyx mori silkworm.

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 Lett

journal_title

FEBS letters

authors

Zhou L,Chen X,Shao Z,Zhou P,Knight DP,Vollrath F

doi

10.1016/s0014-5793(03)01184-0

keywords:

subject

Has Abstract

pub_date

2003-11-20 00:00:00

pages

337-41

issue

3

eissn

0014-5793

issn

1873-3468

pii

S0014579303011840

journal_volume

554

pub_type

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