pH-Tuned MGO Probe

Distinguishes Arg dimethylation isomers

By tuning pH to control reactivity with methylglyoxal, it simultaneously enriches and distinguishes asymmetric and symmetric arginine dimethylation isomers in complex cell samples without prior separation.

Wang, Jiayi · Liu, Ye · Wang, Qi · Ma, Yanni · Longrun, Shi · Wang, Yan · Li, Zhouxian · Fang, Zheng · Liu, Zhen · Yan, Jiayang · Mu, Xia · Li, Guohui · Wang, Anhui · Wang, Keyun · Ye, Mingliang

Journal of the American Chemical Society 2025

Advantages

Effectively distinguishes arginine dimethylation isomers in complex cell samples

Identified sDMA at R112 of SNRPN, confirmed modified by PRMT5

Feasibility verified by orthogonal validation with neutral loss