Fig. 7.

PCA of the differentially regulated proteins identified in (A) the apical samples and (B) the basal samples. Squares represent the barycenter of the four replicates per copper condition. Represented is the expression profile of 51 and 35 proteins (apex and base) analyzed on 24 samples each. (Cu1) 3 nM Cu, (Cu2) 30 nM Cu, (Cu3) 300 nM Cu, (Cu4) 1 µM Cu, (Cu5) 3 µM Cu and (Cu6) 10 µM Cu. Red arrows link the barycenter of the samples grown under copper deprivation (Cu1), optimal copper (Cu4) and copper excess (Cu6).