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. 2020 May 5;11:785. doi: 10.3389/fimmu.2020.00785

FIGURE 4.

FIGURE 4

cSPH11 and cSPH50 are cofactors in PPO activation. (A) PO activity was increased significantly in the presence of procSPH11 and procSPH50. The experimental groups were the same with Figure 3B, instead of factor Xa mutants, wild type procSPHs were used to measure PO activity (upper panel), which was represented as mean ± SD of three independent experiments. ***p < 0.001. (B) Proteolytic activation of procSPH11 and proSPH50 by cSP6Xa. Factor Xa activated cSP6Xa (50 ng) was incubated with 100 ng procSPH11 (left panel) or procSPH50 (right panel) for 1 h. The mixtures were analyzed by immunoblotting using anti-cSPH11 or anti-cSPH50 antibody.