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Detection of 500-nucleotide DNA by laser desorption mass spectrometry.

Rapid communications in mass spectrometry : RCM (1994-09-01)
K Tang, N I Taranenko, S L Allman, L Y Cháng, C H Chen
ABSTRACT

We report the first detection of DNA segments as large as 500 nucleotides by matrix-assisted laser desorption/ionization (MALDI) mass spectrometry, using picolinic acid and 3-hydroxypicolinic acid mixtures as desorption matrices. The successful detection of 500-nucleotide DNA indicates that laser mass spectrometry is now emerging as a new biotechnology tool for DNA-related research. It should be possible to utilize fast detection of large DNA segments by laser mass spectrometry for rapid human genome sequencing.

MATERIALS
Product Number
Brand
Product Description

Supelco
3-Hydroxypicolinic acid, matrix substance for MALDI-MS, ≥99.0% (HPLC)
Sigma-Aldrich
3-Hydroxypyridine-2-carboxylic acid, 98%