Studies on the Reaction between Peptides or Proteins with N-Phosphoryl Amino Acids in Aqueous Solution
作者:Jia-Ning Wang、Yan Liu、Da-Cheng He、Yu-Fen Zhao
DOI:10.1080/10426500701807871
日期:2008.1.14
N-phosphoryl α-amino acid could react with peptide or protein in aqueous solution to form the peptides or proteins increasing one acid amino residue. Through tandem-MS (MS/MS) and liquid chromatography-tandem mass spectrometry (LC/MS/MS), it was found that the added amino acid residue was located at the N-terminal of material peptides or proteins. Furthermore, the added amino acid residue was from the
本文发现N-磷酰α-氨基酸在水溶液中能与肽或蛋白质反应生成增加一个氨基酸残基的肽或蛋白质。通过串联质谱(MS/MS)和液相色谱-串联质谱(LC/MS/MS)发现,添加的氨基酸残基位于原料肽或蛋白质的N端。此外,添加的氨基酸残基来自N-磷酰基α-氨基酸。在该反应过程中,提出了五元环五配位磷中间体在肽键形成中起重要作用的可能机制。