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. Author manuscript; available in PMC: 2013 Mar 30.
Published in final edited form as: Biochem Biophys Res Commun. 2012 Feb 28;420(1):54–60. doi: 10.1016/j.bbrc.2012.02.114

Table 1.

Nitrated peptides of mouse CPS1 detected by LC-MS/MS and Popitam analysis.

Peptide
No.		 Sequence Calculated
m/za 		Observed m/za
(mass error: ppm)
Sample from 1D gel Sample form 2D gel
1 113DELGLNKY*M#ESDGIK127 886.9045 886.9055
(1.1)		 886.9046
(0.1)
2 158VPAIY*GVDTR167 568.2914 568.2917
(0.5)		 568.2917
(0.5)
3 524GVLKEY*GVK532 519.2855 519.2855
(0)		 N.D.
4 1293LPTLEQPIIPSDY*VAIK1309 971.5309 971.5339
(3.1)		 971.5311
(0.2)
5 1445FVHDNY*VIR1453 604.2969 604.2974
(0.8)		 604.2975
(1.0)
a

Numbers show m/z of doubly protonated molecular ions. Y*and M# represent nitrotyrosine and oxidized (+ O) methionine, respectively. N.D. represents “not detected”.