Abstract
The cleavage action of Ser-His on a series of single-stranded oligonucleotides was investigated by Fourier-transform ion cyclotron resonance mass spectrometry with electrospray ionization. It was found that polyadenine was selectively hydrolyzed at the terminal phosphodiester bond.
Acknowledgments
This work was supported by the National Natural Science Foundation of China (No. 20732004, 20805037) and the Research Fund for the Doctoral Program of Higher Education of China (No. 200803841009).