Involved in the synthesis of glucuronoxylan hemicellulose in secondary cell walls. Mostly expressed in newly formed or expanding tissues. Mainly observed in the apical region of the adult gametophore, new branches forming on the side of the mature gametophore and in the tissue immediately basal to the immature sporophyte. Also detected in the antheridia. Expressed at the tips of the protonema side branches and in lateral buds of the chloronema. No visible phenotype and no significant change in monosaccharide composition of the cell walls. Belongs to the glycosyltransferase 47 family.