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Table 1 Methylglyoxal-dependent modifications of catalase

From: Arg354 in the catalytic centre of bovine liver catalase is protected from methylglyoxal-mediated glycation

Sequence Position Modification m/z Peak area % modified
F.DRERIPERVVH.A 65–75 nm 469.260 141,239,376  
MG-H1 487.263 1,972,739 1.4
DHI 493.267 2,816,325 1.9
F.GYFEVTHDITRY.S 83–94 nm 750.860 35,923,631  
MG-H1 777.865 6,243,848 13.2
DHI 786.870 5,107,276 10.8
F.SDRGIPDGHRHM.N 201–212 nm 459.886 36,013,455  
MG-H1 477.889 1,015,794 2.7
DHI 483.893 1,049,274 1.0
L.AHEDPDYGLRDLF.N 254–266 nm 774.360 104,144,627  
MG-H1 801.365 140,068 0.1
DHI 810.370 393,409 0.4
M.LQGRLF.A 351–356 nm 367.221 68,678,448  
MG-H1 394.226 nd 0.0
DHI 403.231 nd 0.0
H.RHRLGPNYLQIPVNCPY.R 363–379 nm 699.698 13,777,078  
MG-H1 717.702 225,543 1.6
DHI 723.705 130,193 0.9
F.NSANDDNVTQVRTF.Y 433–446 nm 790.868 194,414,574  
MG-H1 817.874 14,193,861 6.3
DHI 826.879 16,307,423 7.3
  1. Arginine residues of interest are printed in italic letters
  2. m/z mass to charge ratio, nm non-modified catalase peptide ion, nd not detected