Fig. 4From: Hyperinsulinism associated with GLUD1 mutation: allosteric regulation and functional characterization of p.G446V glutamate dehydrogenaseMolecular structures of GDH-wt and GDH-G446V subunit. Single subunit of GDH (side view, blue) with highlighted glycine-446 (yellow) in wtGDH (arrow a, b) and 446-valine (yellow) in GDH-G446V (arrow c, d) on the descending helix in opened (a, c) and closed (b, d) conformation. The pivot helix of the GDH-G446V shows a different conformation in the closed state (b, d) versus the GDH-wtBack to article page