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  • Title: 3-Aminopicolinic acid as a matrix for laser desorption mass spectrometry of biopolymers.
    Author: Taranenko NI, Tang K, Allman SL, Ch'ang LY, Chen CH.
    Journal: Rapid Commun Mass Spectrom; 1994 Dec; 8(12):1001-6. PubMed ID: 7696697.
    Abstract:
    3-Aminopicolinic acid (3-APA) was tested and found to be a useful matrix for matrix-assisted laser desorption/ionization of DNA and protein. Single-stranded DNA segments of 150-mer and double-stranded DNA of 246 base pairs were successfully detected by using 3-APA as an ultraviolet-absorbing matrix in a linear time-of-flight mass spectrometer. In the case of the double-stranded DNA, only parent ions corresponding to single-stranded DNA were observed. The comparison with 3-hydroxypicolinic acid and picolinic acid matrices is discussed.
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