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. 2021 Apr 1:cwab021. doi: 10.1093/glycob/cwab021

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Fig. 6 — Overview of E- and P-selectin interactions with sLe^X in the binding site (Somers et al. 2000; Woelke et al. 2013). The tetrasaccharide sLe^X binds in a Ca²⁺-dependent manner via interactions with fucose hydroxyls. The fucose residue is shown in yellow and the Ca²⁺ cation as a red sphere. This figure is available in black and white in print and in color at Glycobiology online.