O-linked N-acetylglucosamine (O-GlcNAc) is a dynamic post-translational modification of serine and threonine residues on nuclear and cytoplasmic proteins. O-GlcNAc modification influences many cellular mechanisms. including carbohydrate metabolism. signal transduction and protein degradation. https://www.roneverhart.com/Apple-Watch-Series-6-GPS-Cellular-44mm-Space-Gray-Aluminum-w-Black-Sport-Band/