Supplement to Figure 6A

Original data presented in Figure 6A. Each of the panels shown in Figure 6A [1] was selected from the same, original, 17-line file and reassembled in the original order without individual changes in brightness or contrast. Panels without Cka2 kinase were first shown separately in Figure 4A [1], to introduce the key differences seen between Cdc34 and ^tmCdc34 samples. In addition, the Sic1 image in Figure 6A [1] had two cosmetic alterations. First, three bands of contaminating human keratin, now marked with white asterisks, were inappropriately removed. Second, the control reaction shown in lane 1, one of four identical control reactions shown on the same blot (lanes 1, 5, 10 and 15), was patched to cover up an irrelevant bubble. None of these changes altered the results or their interpretation