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2001 | 48 | 4 | 1125-1129
Article title

Detection and sequencing of new cyclic peptides from linseed by electrospray ionization mass spectrometry.

Content
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EN
Abstracts
EN
Extract of Linum usitatissimum seeds was analyzed by ESI-MS and ESI-MS/MS. The analysis confirms the presence of previously reported cyclolinopeptides: CLA (c(Pro-Pro-Phe-Phe-Leu-Ile-Ile-Leu-Val) and CLB (c(Pro-Pro-Phe-Phe-Val-Ile-Met-Ile-Leu)). Cyclolinopeptides CLD and CLE, which contain methionine oxide, were detected in small quantities only. These peptides likely result from the oxidation of their precursors, not reported previously: CLD' (c(Pro-Phe-Phe-Trp-Ile-Met-Leu-Leu)) and CLE' (c(Pro-Leu-Phe-Ile-Met-Leu-Val-Phe)), present at higher concentrations in unoxidized extract. Two new cyclic octapeptides: CLF (c(Pro-Phe-Phe-Trp-Val-Met-Leu-Met)) and CLG (c(Pro-Phe-Phe-Trp-Ile-Met-Leu-Met)) were detected and their sequences were proposed on the basis of CID experiments and similarity with those of CLD'.
Publisher

Year
Volume
48
Issue
4
Pages
1125-1129
Physical description
Dates
published
2001
received
2001-09-19
accepted
2001-11-26
Contributors
  • Faculty of Chemistry, University of Wrocław, Wrocław, Poland
References
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  • 5. Bell, A., McSteen, P.M., Cebrat, M., Picur, B. & Siemion, I.Z. (2000) Acta Pol. Pharm 57, (Suppl. ) 134-136.
  • 6. Kaufmann, H.P. & Tobschirbel, A. (1959) Chem. Ber 92, 2805-2809 .
  • 7. Weygand, F. (1968) Z. Anal. Chem 243, 2 .
  • 8. Eckart, K. (1994) Mass Spectrom. Rev 13, 23-55 .
  • 9. Nielsen, H.K., Loliger., J. & Hurrell, R.F. (1985) Br. J. Nutr 53, 61-73.
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-abpv48i4p1125kz
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