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(a) Superimposition of the six intermonomeric binding sites (chains A and B of the three RSL variants) complexed with the LeX tetrasaccharide. Color coding as in Figure 3a. (b) Close-up of the intermonomeric binding site of RSL[7FW] (chain B). The network of hydrogen bonds is displayed as dashed blue lines, and contacts with the fluorine atoms are in magenta.
