Fig. 4. The cryptic epitope of anti-metalloprotease domain mAb 6A6 is exposed by conformational activation of ADAMTS13.
Binding of rADAMTS13, MDTCS and T2-CUB2 to 3H9 and/or 6A6 (both anti-metalloprotease domain mAbs) was tested in ELISA. Binding was detected with the anti-V5-HRP mAb. (A) Binding of rADAMTS13, MDTCS and T2-CUB2 to 3H9 and 6A6. Binding was calculated relative to the binding of MDTCS. (B) Binding of ADAMTS13, pre-incubated with the respective anti- T8 and anti-CUB mAb or Fab fragment, to 6A6. Binding was calculated relative to the binding of rADAMTS13. Differences were statistically analysed using the Student t-test. Error bars represent the SD of at least three independent experiments.