Ka. Sanneslowery et al., POSITIVE-ION ELECTROSPRAY-IONIZATION MASS-SPECTROMETRY OF OLIGONUCLEOTIDES, Journal of the American Society for Mass Spectrometry, 8(1), 1997, pp. 90-95
Positive ion electrospray ionization mass spectra have been obtained o
f deoxyribonucleic acids (DNA) and ribonucleic acids (RNA), including
transfer RNAs (77-mer, similar to 25 kDa). For several different solut
ion conditions, the charge state distributions of DNA and RNA molecule
s were determined. It is postulated that the production of the multipl
y charged positive ions results from gas phase dissociation of complex
es between nitrogen-containing bases and oligonucleotides. (C) 1997 Am
erican Society for Mass Spectrometry