Applied Biosystems original ICAT(TM) d8 modified cysteine 450.27520751953125 450.279998779296875 553.280029296875 553.28436279296875 A protein modification that is produced by formation of an adduct of a cysteine residue with the Applied Biosystems original isotope-coded affinity tag d8 reagent. Applied Biosystems original ICAT(TM) d8 C C 20 (1)H 26 (2)H 8 N 4 O 5 S 1 C 23 (1)H 31 (2)H 8 N 5 O 6 S 2 ICAT-D:2H(8) MOD:00405 PSI-MOD Unimod:12 artifact (2)H deuterium tagged reagent isotope tagged sufhydryl reagent modified cysteine