Fig 5. Human Caco-2 cells express prostasin predominantly in the activated form and matriptase primarily in the zymogen form.

Human Caco-2 enterocytes were cultured and harvested at indicated dates post confluency. Cell lysates were analyzed by Western blot for prostasin species (A.) and matriptase species (B.). The composition of the various forms of prostasin and matriptase are indicated. The experiment was conducted twice with the same profile observed. Representative data are shown.