机构地区: 中山大学化学与化学工程学院
出 处: 《分析测试学报》 2005年第5期46-49,共4页
摘 要: 报道了采用高效液相色谱-电喷雾串联质谱技术测定由海洋内生真菌产生的2个新环五肽cyclo(Phe-Leu-Leu-Leu-Ile)和cyclo(Phe-Val-Leu-Leu-Leu),串联质谱实验提供了丰富的结构信息,确证了环肽的氨基酸的种类和连接顺序。这种简单、快速、可靠的分析方法在对未知样品中环肽成分的检测中具有广阔的应用前景。 LC - MS" was used tor obtaining structural information of cyclo (Phe- Leu- Leu- Leu- lie) and cyclo (Phe-Val-Leu-Leu-Leu), which were produced by marine endophytic fungus, at the positive ion ESI mode. These fingerprint MS/MS spectra provided structural information about the amino acid species as well as the sequence of amino acid residues. The simple, rapid, and reliable method may be useful for the identification and characterization of cyclic peptides from unknown biological samples.