. Author manuscript; available in PMC: 2015 Apr 8.

Published in final edited form as: Anal Chem. 2007 Mar 23;79(9):3271–3279. doi: 10.1021/ac0617363

Table 1. Most Abundant Ionic Species Detected by (+)NanoESI/FTICR MS in the S-Layer Glycopeptide Mixture and Their Corresponding Assignment.

	Ru	[M + 4H]⁴⁺	Δm (ppm)	[M + 3H + Na]⁴⁺	Δm (ppm)
M₁	14	1966.581	0.7947	1972.0749	0.0119
M₂	14 + Rha	2003.0741	9.8927	2008.5969	3.7345
M₃	15	2076.1204	1.1899	2081.6254	3.3849
M₄	15 + Rha	2112.6326	2.2479	2118.1254	3.5097
M₅	16			2191.1799	8.2663
		[M + 3H + K]⁴⁺	Δm (ppm)	[M + 2H + 2Na]⁴⁺	Δm (ppm)
M₁	14	1976.0856	8.7004	1977.5629	3.7984
M₂	14 + Rha			2014.0773	3.7671
M₃	15	2085.631	9.1892	2087.1106	1.5534
M₄	15 + Rha	2122.1263	0.0085	2123.6184	4.6724
M₅	16			2196.6573	0.0116
		[M + H +3Na]⁴⁺	Δm (ppm)	[M + 2H + 3Na]⁵⁺	Δm (ppm)
M₁	14	1983.0486	7.8962	1586.6549	0.4596
M₂	14 + Rha	2019.5723	3.1875	1615.866	0.1526
M₃	15	2092.6077	0.0045	1674.2858	1.8623
M₄	15 + Rha	2129.1197	1.1593	1703.5005	0.0003
M₅	16			1761.9200	2.0804