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. Author manuscript; available in PMC: 2010 Nov 1.
Published in final edited form as: Anal Biochem. 2009 Jul 9;394(1):92–100. doi: 10.1016/j.ab.2009.07.008

Table 2.

OP-Lysine Characteristic Ionsa

Mass amub Name Structure Per Centc Rel Intensed
Chlorpyrifos-oxon
21 tryptic peptides analyzed
220.0 diethoxyphospho Lys immonium minus NH3 graphic file with name nihms131272t1.jpg 95 6–100
192.0 monoethoxyphospho Lys immonium minus NH3 graphic file with name nihms131272t2.jpg 85 4–38
163.9 phospho Lys immonium minus NH3 graphic file with name nihms131272t3.jpg 75 5–26
128.9 α-amino caprolactam graphic file with name nihms131272t4.jpg 30 4–13
129.9 Pipecolic acid graphic file with name nihms131272t5.jpg 10 10–15
83.9 Lys immonium minus NH3 graphic file with name nihms131272t6.jpg 50 4–27
237.1 diethoxyphospho Lys immonium graphic file with name nihms131272t7.jpg 50 3–18
237 monoethoxyphospho α-amino caprolactam graphic file with name nihms131272t8.jpg -- --
209.1 monoethoxyphospho Lys immonium graphic file with name nihms131272t9.jpg 10 2–5
Diisopropylfluorophosphate
1 tryptic peptide analyzed
164.0 phospho Lys immonium minus NH3 graphic file with name nihms131272t10.jpg 100 42
181.2 phospho Lys immonium graphic file with name nihms131272t11.jpg 100 8
8\ Lys immonium minus NH3 graphic file with name nihms131272t12.jpg 100 8
a

All masses are for the protonated, dehydro form of the amino acid.

b

Masses are given as the average of all measurements.

c

“Per Cent” refers to the fraction of the tryptic peptides that exhibited this mass.

d

“Rel Intense” refers to the intensity of the mass relative to the most intense peak in the MSMS spectrum. This value is generally given as a range, in percentage. Entries without a range represent masses which appeared only once.