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. 1998 Sep 29;95(20):11613–11618. doi: 10.1073/pnas.95.20.11613

Table 1.

Matrix-associated laser desorption ionization-time of flight atomic mass determination of the proscripts containing base analogs

Proscript name Mass, daltons
Δ, amu
Calc. Obs.
−17 G/2′-dG 10571.2 10566.1 5.1
−17 G/2-Aminopurine 10570.2 10568.8 1.4
−17 G/N7-deaza-2′-dG 10569.2 10559.6 9.6
−14 A/Purine 10572.2 10577.8 5.6
−13 C/Pyrimidine-2-one 10571.2 10564.6 7.3
−11 G/2′-dG 10571.2 10563.9 7.3
−11 G/N7-deaza-2′-dG 10569.2 10569.5 0.3
−11 G/2-Aminopurine 10570.2 10571.2 1.0
−1 G/2-Aminopurine 10570.2 10569.3 0.9
+1 C/Pyrimidine-2-one 10571.2 10566.4 4.8
+2 A/Purine 10572.2 10569.3 2.9

Calc., calculated; Obs., observed.