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. Author manuscript; available in PMC: 2011 Jul 22.
Published in final edited form as: Anal Chem. 2009 Aug 1;81(15):6156–6164. doi: 10.1021/ac900627n

Figure 4.

Figure 4

ECD+CID spectrum (upward) and ECD spectrum (downward) of [M+4H]4+ of β-endorphin. The amino acid sequence for β-endorphin is shown at the bottom of the figure and indicates sites of backbone cleavage, annotated the same as in Figure 2.