- histone H3R26 arginine deiminase activity
Catalysis of the reaction: H2O + histone H3 L-arginyl (position 26)= histone H3 L-citrullyl (position 26) + NH4+, resulting in histone H3 citrullination at position 26.
- histone H3R26 methyltransferase activity
Catalysis of the reaction: S-adenosyl-L-methionine + (histone H3)-arginine (position 26) = S-adenosyl-L-homocysteine + (histone H3)-N-methyl-arginine (position 26). This reaction is the addition of a methyl group to the arginine residue at position 26 of histone H3.