Figure 3

Isolation of organelles from etiolated castor bean seedlings. Four fractions of the sucrose density step gradient after centrifugation were taken from the gradient for various analyses at the interface 30% - 44% (w/w) sucrose solution (F1), 44% - 48% (w/w) sucrose solution (F2), 48% - 49% (w/w) sucrose solution (F3), and 50% - 54% (w/w) sucrose solution (F4).