Fig_7.tif (1.54 MB)
Tandem collision-induced dissociation (CID) mass spectra of doubly protonated peptide (a) exendin-4(15–39), (b) exendin-4(16–39), and (c) exendin-4(12–39).
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posted on 2015-02-27, 02:54 authored by Sha Liao, Yuanjun Liang, Zhiwei Zhang, Jinglai Li, Juan Wang, Xiaoying Wang, Guifang Dou, Zhenqing Zhang, Keliang LiuPrecursor ions were generated by electrospray ionization (ESI) using the on-line liquid chromatography (LC)-ESI/tandem mass spectrometry (MS-MS) procedure described in the Methods section.
