. 2015 Apr 2;26(6):1004–1013. doi: 10.1007/s13361-015-1094-1

Table 2.

Relative Fragment Ion Abundance (Calculated as % of Total Fragment Ion Abundance) Following ECD of (Phospho)peptides (n = 3)

	R6pS4	R6S12	R6(unmod)	L6S4	L6S12	L6(unmod)
y₉						0.70
y₁₀					0.37
z₇ ^•					0.59	5.14
z₇					2.73	5.53
z₈					0.78	1.83
z₉					0.18	4.15
z₁₀ ^•		4.65	5.41		2.73	5.73
z₁₀		5.82	4.44	0.92	3.62	4.30
z₁₁ ^•		3.92	4.36	1.25	1.24	3.71
z₁₁		4.58	3.75	4.17	1.36	2.72
z₁₂ ^•-H₃PO₄					0.82
z₁₂ -H₃PO₄					0.42
z₁₂ ^•	2.06	0.64	1.42	0.82	1.54	2.30
z₁₂	1.39	0.26	1.16	0.66	1.15	1.60
z₁₃ ^•		0.54	1.42	0.26	0.98
z₁₃		0.92		0.35	0.65
c₆ ^•			0.15
c₆			0.33
c₇ ^•			0.51
c₇			0.75
c₈ ^•			0.84
c₈			1.25
c₁₀ ^•			0.43
c₁₀			1.35
c₁₁ ^•	2.34		1.51	3.21	2.63	2.10
c₁₁	3.63		2.25	3.90	2.29	6.34
c₁₂ ^•	3.16	3.24	1.31	2.53	4.72
c₁₂	7.39	6.51	6.38	5.34	6.87	4.69
c₁₃	2.83	0.40	1.97	2.60	1.85	2.18
c₁₄	5.27	4.34	2.96	5.48	5.11	5.11
[M + 2H^–H₃PO₄]^+•	3.61	1.68		3.09	3.97
[M + H]⁺	1.61	1.12	1.39	2.23	2.49	1.04
[M + 2H]^+•	16.86	13.16	11.47	15.33	11.39	8.69