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. 2018 Mar 19;8:4806. doi: 10.1038/s41598-018-22780-1

Figure 2.

Figure 2

Ixonnexin promotes plasmin generation initiated with t-PA. (A and B) Ixonnexin (0–1 μg/ml) was immobilized in 96-well plates and incubated with Glu- or Lys-plasminogen (0.5 μM), respectively. Reactions were initiated with t-PA (2.5 nM for Lys-plasminogen, or 10 nM for Glu-plasminogen), and plasmin formation was detected with chromogenic substrate S2251 (250 μM). The inset shows plasmin generation in solution. (C and D) Ixonexin (0.5 μg/ml) mediated plasmin generation in the presence of increasing concentrations of Glu- and Lys-plasminogen, respectively. (E and F) Show the transformation of the data in (C and D) as the slope A405 nm/min2 and Glu- and Lys-plasminogen concentration, respectively. Km of the reaction using Glu- or Lys-plasminogen was calculated by non-linear regression, as indicated in Methods.