Myrosinases TGG1 and TGG2 from Arabidopsis thaliana contain exclusively oligomannosidic N-glycans

► TGG1 and TGG2 are glycosylated with oligomannosidic N-glycans. ► TGG1 N-glycans are processed by class I alpha-mannosidases. ► TGG1 transcript levels are higher in leaves of mns1 mns2 mns3 plants.