Table 2

The frequencies that different fragment ion types have observed peaks in the training ETD data.

Ion

z'

c

y

z

b

a


Frequency

81.9%

79.9%

70.2%

45.3%

40.5%

37.9%


Ion

z'2+

y-H2O

C-H2O

z'-NH3

a-NH3

b-H2O


Frequency

34.3%

30.8%

29.3%

27.2%

24.9%

24.5%


Liu et al. BMC Bioinformatics 2010 11(Suppl 1):S4   doi:10.1186/1471-2105-11-S1-S4

Open Data