Fig. 1: Biochemical and structural features of human GLT25D1/COLGALT1.

a Reaction scheme showing the collagen Lys–to–Glc-Gal-Hyl conversion post-translational modification process mediated by the alternate action of LH/PLOD and GLT25D1/COLGALT1, with color highlight of donor substrates and associated products. b Cartoon representation of the crystal structure of human GLT25D1/COLGALT1, showing the domain architecture of the enzyme with GT1 and GT2 domains connected via a rigid linker element, anchored to both domains via hydrophobic anchorages shown in details in (c).