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Investigating the clearance of VWF A‐domains using site‐directed PEGylation and novel N‐linked glycosylation

Previous studies have demonstrated that the A1A2A3 domains of von Willebrand factor (VWF) play a key role in regulating macrophage‐mediated clearance in vivo. In particular, the A1‐domain has been shown to modulate interaction with macrophage low‐density lipoprotein receptor‐related protein‐1 (LRP1) clearance receptor. Furthermore, N‐linked glycans within the A2‐domain have been shown to protect VWF against premature LRP1‐mediated clearance. Importantly, however, the specific regions within A1A2A3 that enable macrophage binding have not been defined.