(A) Wild type (A5244), GAL-MAM1 (A12315), GAL-CDC5 (A12325), GAL-CDC5 GAL-MAM1 (A12312), lrs4Δ (A15911), GAL-CDC5 GAL-MAM1 lrs4Δ (A15910) and GAL-CDC5 GAL-MAM1 lrs4Δ csm1Δ (A16882) cells, all carrying CENIV GFP dots, were arrested in G1 using 5 μg/ml α factor, and treated with galactose for 1 hour prior to release. When arrest was complete, cells were released into medium lacking pheromone and containing 2% galactose. Samples were taken to determine GFP dot segregation (data represent the average of 3 experiments; statistically significant changes relative to wild type (p ≤ 0.001) are indicated by ***).
(B) Wild type (A15127), GAL-CDC5 (A15926), and GAL-CDC5 GAL-MAM1 (A15925) cells carrying LRS4–6HA and NDC80-GFP were grown as described in (A) to determine the localization of Lrs4-HA on chromosome spreads. Lrs4-6HA is shown in red, Ndc80-GFP in green and DNA in blue.
(C, D) Wild type (A15912, squares) and GAL-CDC5 GAL-MAM1 (A15915, circles) cells, all carrying PDS1-3HA fusions, were grown as in (A) except α-factor was re-added (5 μg/ml) 90 minutes after release from the G1 arrest. Samples were taken to determine the percentage of metaphase (closed symbols; C) and anaphase (open circles; C) spindles and Pds1-3HA protein levels (D). Pgk1 was used as a loading control.