Fig. 9. Phosphorylation of purified POK-2 and centrin. Overexpressed CaM (POK-2)
and engineered centrin of Chlamydomonas were purified and prepared
for phosphorylation by CaPK-1 and CaPK-2. Lanes 1 and 2, 2 µg POK-2; lanes
3 and 4, 1 µg centrin. Autophosphorylation of each kinase and the
phosphorylation of POK-2 and centrin are indicated.