Document Detail

Uptake of atmospheric carbon dioxide into silk fiber by silkworms.
MedLine Citation:
PMID:  12741798     Owner:  NLM     Status:  MEDLINE    
The relation between the uptake of atmospheric CO(2) and insect's production of silk fiber has not yet been reported. Here, we provide the first quantitative demonstrations that four species of silkworms (Bombyx mori, Samia cynthia ricini, Antheraea pernyi, and Antheraea yamamai) and a silk-producing spider (Nephila clavata) incorporate atmospheric CO(2) into their silk fibers. The abundance of (13)C incorporated from the environment was determined by mass spectrometry and (13)C NMR measurements. Atmospheric CO(2) was incorporated into the silk fibers in the carbonyl groups of alanine, aspartic acid, serine, and glycine and the C(gamma) of aspartic acid. We show a simple model for the uptake of atmospheric CO(2) by silkworms. These results will demonstrate that silkworm has incorporated atmospheric CO(2) into silk fiber via the TCA cycle; however, the magnitude of uptake into the silk fibers is smaller than that consumed by the photosynthesis in trees and coral reefs.
Jun Magoshi; Toshihisa Tanaka; Haruto Sasaki; Masatoshi Kobayashi; Yoshiko Magoshi; Hidetoshi Tsuda; Mary A Becker; Shun-ichi Inoue; Ken Ishimaru
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Biomacromolecules     Volume:  4     ISSN:  1525-7797     ISO Abbreviation:  Biomacromolecules     Publication Date:    2003 May-Jun
Date Detail:
Created Date:  2003-05-13     Completed Date:  2004-01-16     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  100892849     Medline TA:  Biomacromolecules     Country:  United States    
Other Details:
Languages:  eng     Pagination:  778-82     Citation Subset:  IM    
Core Research for Evolutional Science and Technology, Japan Science and Technology Corporation, Japan.
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MeSH Terms
Bombyx / metabolism*
Carbon Dioxide / analysis,  pharmacokinetics*
Insect Proteins / analysis,  pharmacokinetics*
Reg. No./Substance:
0/Insect Proteins; 0/Silk; 124-38-9/Carbon Dioxide

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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