Figure 8.

Gin4 retains septins at the bud cortex in elm1∆ cells. (A) Representative images of YEF10238 (elm1∆ gin4∆ CDC3-GFP mRuby2-TUB1) cells with brightfield (left) and maximum-intensity projection of merged Cdc3-GFP in green and mRuby2-Tub1 in magenta (right). Scale bars = 5 μm. (B) Maximum-intensity projection images of representative elm1∆ gin4∆ (YEF10238), elm1∆ gin4KD (YEF11144), and elm1∆ gin4∆KA1 (YEF10990) cells from a time-lapse series taken with a 2-min interval with Cdc3-GFP in green and mRuby2-Tub1 in magenta at indicated times. T = 0 is bud emergence. Gray dashed line is the cell periphery. Yellow boxed region is the area used for measurements in C–E. Scale bars = 2 μm. (C) Quantification of cells in Fig. 3 B and B. Shown is background subtracted intensity of Cdc3-GFP in WT (green), elm1∆ (gray), gin4∆ (yellow), and elm1∆ gin4∆ (blue) relative to the maximum value measured from the sum projection of the given number of cells for each strain. Curves for WT, elm1∆, and gin4∆ are the same used in Fig. 3 C and are at 30% opacity for ease of comparing the kinetic signature of elm1∆ gin4∆ cells to WT and each single deletion mutant. The mean is plotted with error bars being the SD. (D) Quantification of cells in Fig. 3 B and B. Shown is the background subtracted intensity of Cdc3-GFP in WT (green), elm1∆ (gray), gin4∆ (yellow), elm1∆ gin4∆ (blue), and elm1∆ gin4KD (black) relative to the maximum value measured from the sum projection of given number cells for each strain. Curves for WT, elm1∆, and gin4∆ are the same used in Fig. 3 C and that of elm1∆ gin4∆ is the same as used in C and are at 30% opacity for ease of comparing the kinetic signature of elm1∆ gin4KD cells to previously analyzed cells. The mean is plotted with error bars being the SD. (E) Representative image of YEF10989 (elm1∆ gin4KD-GFP CDC3-mCherry) cells with brightfield (left) and maximum intensity projection of Gin4KD-GFP in green (middle) and Cdc3-mCherry in magenta (right). Gray dashed line is cell periphery. Scale bar = 5 μm. (F) Quantification of cells in Fig. 3 B and B. Shown is the background subtracted intensity of Cdc3-GFP in WT (green), elm1∆ (gray), gin4∆ (yellow), elm1∆ gin4∆ (blue), and elm1∆ gin4∆KA1 (black) relative to the maximum value measured from the sum projection of given number cells for each strain. Curves for WT, elm1∆, and gin4∆ are the same used in Fig. 3 C and that of elm1∆ gin4∆ is the same as used in C and are at 30% opacity for ease of comparing the kinetic signature of elm1∆ gin4∆KA1 cells to previously analyzed cells. The mean is plotted with error bars being the SD.

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