The correct enzymatic activity of a previously misnamed enzyme is defined, placing the enzyme upstream of LARGE in building functional O-mannose structures on α-dystroglycan that are disrupted in multiple forms of congenital muscular dystrophy.
Tobias Willer, Kei-ichiro Inamori ... Kevin P Campbell
Post-phosphoryl modification of α-dystroglycan requires the glucuronyltransferase B4GAT1; this enzyme synthesizes the acceptor glycan that serves as a primer for the glycosyltransferase LARGE to synthesize the laminin-binding glycan.
Hung-Hsiang Huang, Antti Hassinen ... Pamela Stanley
GnT1IP-L is a membrane bound glycoprotein that interacts with MGAT1 in the Golgi, but not in the endoplasmic reticulum, to regulate complex N-glycan synthesis.
Jennifer N Jahncke, Daniel S Miller ... Kevin M Wright
Loss of functional dystroglycan disrupts the formation and function of CCK+/CB1R+ inhibitory synapses in hippocampal CA1, resulting in reduced seizure thresholds in mouse models of dystroglycanopathy.