Sequence and modified group analysis on C-terminal modified analogs of endomorphin-2 using electrosp

• 作 者: ChuanJun Zhu (1) ChangFeng H
• 机 构: 1.StateKeyLaboratoryofNaturalandBiomimeticDrugs,2.InstitutionofBiochemistryandMolecularBiology
• 出 处: 中国科学：化学英文版
• 发表日期: 2008年1期
• 关键词: endomorphin-2 OPIOID peptide analogs ESI FT-ICR MS McLafferty REARRANGEMENT endo

In this paper, a series of C-terminal modified analogs of endomorphin-2 is investigated using ESI-FT-ICR-MS. Some b, y″, a, and internal ions are found in the CID spectra and slight mass differ- ences between the calculated and observed results are obtain