Synthesis of heptapeptides and analysis of sequence by tandem ion trap mass spectrometry

Abstract: Two heptapeptides have been prepared by Fmoc methodology using Wang resin as solid support. For attachment of the first amino acid, several coupling systems were evaluated, and DIC/DMAP system could give yields of >99% and low levels of racemization. The selection of scavenger combination to deprotect side chains revealed that H2O/p-cresol was good at scavenging trityl and 1,2-ethanedithiol was highly efficient for scavenging t-butyl. Through shortening the preactivation time to 5 min, the racemization which occurred during formation of amide bonds coupled by HBTU was minimized. The crude peptides were characterized by RP-HPLC and MS, and sequenced by MS/MS to acquire reliable amino acid sequence information.

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Englisch

Bibliographic citation
Synthesis of heptapeptides and analysis of sequence by tandem ion trap mass spectrometry ; volume:4 ; number:2 ; year:2006 ; pages:285-298 ; extent:14
Open chemistry ; 4, Heft 2 (2006), 285-298 (gesamt 14)

Creator
Jia, Chenxi
Qi, Wei
He, Zhimin
Yang, Haoming
Qiao, Bin

DOI
10.2478/s11532-006-0004-6
URN
urn:nbn:de:101:1-2410181541063.263159947655
Rights
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Last update
15.08.2025, 7:35 AM CEST

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Associated

  • Jia, Chenxi
  • Qi, Wei
  • He, Zhimin
  • Yang, Haoming
  • Qiao, Bin

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