Interaction of VWF domains with LRP1 cluster II and cluster IV. (A) Overview of the recombinant truncated VWF constructs studied. (B) Binding of full-length rVWF (red), VWF-D’A3 (blue), and VWF-A1A2A3 (green) to purified LRP1 cluster IV. (C) Binding of full-length rVWF (red), VWF-D’A3 (blue), and VWF-A1A2A3 (green) to LRP1 cluster II. (D) Binding of individual VWF-A1 (red), VWF-A2 (blue), and VWF-A3 (green) domains to LRP1 cluster IV. (E) Binding of individual VWF-A1 (red), VWF-A2 (blue), and VWF-A3 (green) domains to LRP1 cluster II. Dots represent mean absorbance at 450 nm at corresponding VWF concentrations. Error bars depict standard deviations. P values are outcomes of extra-sum-of-squares F test and compare the binding capacity of different VWF constructs with LRP1 cluster IV or cluster II. Abs, absorbance.