Journal of the American Society for Mass Spectrometry, 18(2), 201-207 (2006-10-28)
Development of a quantification method based on isotopic variants of O-methyl isourea (OMIU) in conjunction with reversed-phase (RP) liquid chromatography (LC) electrospray mass spectrometry is described for determining the relative quantification of tau-related peptides Ac-VQIVXK-NH2. Extracted ion chromatograms of the
Journal of immunology (Baltimore, Md. : 1950), 133(6), 3250-3254 (1984-12-01)
Lysine epsilon-amino groups of human factor H were selectively converted to guanidino groups by treatment with 0.1 M O-methylisourea at pH 10.4. Guanidination resulted in a dose-dependent decrease in the capacity of the regulatory protein to accelerate decay dissociation of
The Journal of dairy research, 49(4), 607-617 (1982-11-01)
Several dicarbonyl compounds (glyoxal, substituted glyoxals, diacetyl and 1, 2-cyclohexanedione) had a marked stabilizing effect on the heat stability of milk, especially in the presence of urea. These reagents are believed to modify arginine more or less specifically suggesting an
Toxicon : official journal of the International Society on Toxinology, 29(7), 819-826 (1991-01-01)
The effect of modification of amino groups on RTX-III induced lethality in mice has been studied. The toxicity was not affected by guanidination of one or two lysine residues with O-methylisourea, but guanidination of three or four lysine residues decreased
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