Accurate mass measurement of DNA oligonucleotide ions using high-resolution time-of-flight mass spectrometry

John M. Koomen, William Russell, Shane E. Tichy, David H. Russell

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Matrix-assisted laser desorption/ionization (MALDI) and electrospray ionization (ESI) time-of-flight mass spectrometry (TOFMS) play an essential role in the analysis of biological molecules, not only peptides and proteins, but also DNA and RNA. Tandem mass spectrometry used for sequence analysis has been a major focus of technological developments in mass spectrometry, but accurate mass measurements by high-resolution TOFMS are equally important. This paper describes the role that high mass measurement accuracy can play in DNA composition assignment and discusses the influence of several parameters on mass measurement accuracy in both MALDI and ESI mass spectra. Five oligonucleotides (5-13mers) were used to test the resolving power and mass measurement accuracy obtained with MALDI and ESI instruments with reflectron TOF mass analyzers. The results from the experimental studies and additional theoretical calculations provide a basis to predict the practical utility of high-resolution TOFMS for the analysis of larger oligonucleotides.

Original languageEnglish (US)
Pages (from-to)357-371
Number of pages15
JournalJournal of Mass Spectrometry
Volume37
Issue number4
DOIs
StatePublished - 2002
Externally publishedYes

Fingerprint

oligonucleotides
Oligonucleotides
Mass spectrometry
Mass Spectrometry
DNA
mass spectroscopy
deoxyribonucleic acid
Electrospray ionization
Ions
ionization
Lasers
high resolution
Ionization
Desorption
ions
desorption
matrices
Tandem Mass Spectrometry
lasers
Sequence Analysis

Keywords

  • Accurate mass measurement
  • Calibration
  • Composition
  • DNA
  • Oligonucleotides
  • Time-of-flight mass spectrometry

ASJC Scopus subject areas

  • Biophysics
  • Organic Chemistry
  • Spectroscopy

Cite this

Accurate mass measurement of DNA oligonucleotide ions using high-resolution time-of-flight mass spectrometry. / Koomen, John M.; Russell, William; Tichy, Shane E.; Russell, David H.

In: Journal of Mass Spectrometry, Vol. 37, No. 4, 2002, p. 357-371.

Research output: Contribution to journalArticle

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