derives from 4x(2)H labeled alpha-amino succinylated residue 104.0411529541015625 104.0411529541015625 104.09999847412109375 104.09999847412109375 artifact C 4 (2)H 4 O 3 N-term Succinyl:2H(4) A protein modification that effectively replaces a residue alpha-amino- or alpha-imino-hydrogen with a 4x(2)H labeled succinyl group. MOD:00458 PSI-MOD Succinic anhydride labeling reagent, heavy form (+4amu, 4H2), N-term X C 4 (2)H 4 O 3 succinylated residue isotope tagged reagent derivatized residue alpha-amino acylated residue