. Author manuscript; available in PMC: 2014 Apr 1.

Published in final edited form as: Metallomics. 2013 Apr;5(4):335–342. doi: 10.1039/c3mt20205d

Table 1.

Monoisotopic masses for the parent ions of tryptic peptides of interest as observed with high-resolution tandem mass spectrometry. (−) denotes no data obtained.

Sample	Amino Acids	Charge State	Monoisotopic Mass (Da)
Sample	Amino Acids	Charge State	Calculated	Observed
Control	Cys31, RS-H	+ 3	705.004	705.003
Control	Cys60, RS-H	+ 2	704.361	704.352

+SeO₃²⁻	RS-SR′	+ 4	946.978	946.980
	+ O	+ 4	950.977	950.978
	+ 2 O	+ 4	954.976	954.972
	+ 3 O	+ 4	958.974	958.972
	RS-Se-SR′	+ 4	966.958	966.960
	+ O	+ 4	970.965	970.966
	+ 2 O	+ 4	974.955	-

+TeO₃²⁻	RS-SR′	+ 4	946.978	946.790
+TeO₃²⁻	RS-Te-SR′	+ 4	979.455	-