label: histone H3R2 arginine deiminase activity
label_lc: histone h3r2 arginine deiminase activity
description: "Catalysis of the reaction: H2O + histone H3 L-arginyl (position 2)= histone H3 L-citrullyl (position 2) + NH4+, resulting in histone H3 citrullination at position 2."