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. 2014 May 2;289(24):16748–16760. doi: 10.1074/jbc.M114.567388

TABLE 3.

Oligosaccharide substrate specificity of PatBSUMO

Potential substrates in 50 mm sodium phosphate buffer, pH 6.5, containing 4 mm pNP-Ac were incubated with 1.0 μm PatBSUMO, and samples of reaction mixtures were subjected to MALDI-TOF MS analysis. ND, not detected.

Potential substrate m/z [m + Na] of potential O-acetylated product
Difference
Theoretical Detected
m/z m/z
PG metabolites
    GlcNAc 286.09 ND
    MurNAc 316.10 ND
    GlcNAc-MurNAc 561.19 ND
    GlcNAc-MurNAc-dipeptide 759.28 ND

Chitooligosaccharides
    GlcNAc2 489.17 ND
    GlcNAc2-O-benzyl 579.22 579.45 0.23
    GlcNAc3 692.25 692.45 0.20
    GlcNAc4 895.33 894.54 −0.79
    GlcNAc5 1,098.41 1098.85 0.44
    GlcNAc6 1,301.49 1302.18 0.69

Other oligosaccharides
    β-1,4 Glc6 1,055.33 ND
    β-1,4 Glc4 731.22 ND
    α-1,4 Glc3 569.17 ND
    Xylose6 875.26 ND
    Xylose4 611.18 ND
    GlcN6 1,049.42 ND