FIG 2 .
Ellipsometry studies of AnxA5 binding to LPS. (A) Ellipsometry tracing of AnxA5 binding to purified LPS. In the presence of calcium, the net binding of the protein to LPS was rapid, reaching a maximum level within 5 min; addition of EDTA immediately dissociated the bound AnxA5 from the LPS. In the absence of calcium, virtually no binding of AnxA5 to LPS was observed. (B) AnxA5 binding isotherm showing the maximum binding densities (Bmax) and KD values for the AnxA5-LPS interaction.