Figure 2.

HURP and augmin are required for de novo interzonal MT generation in the absence of preexisting MTs. (A–D) Immunostaining of MT in control, BI2536-treated (A), GCC185-depleted (B), ZM477439-treated (C), augmin- or HURP-depleted (D) cells fixed at 5 min after the MT depolymerization/regrowth treatment. Bars, 5 µm. (A’–D’) The ratio of central and polar MT intensities of anaphase cells in A–D. Means ± SEM of three independent experiments are shown (>16 cells were analyzed for each treatment). The ratio in both the augmin- and HURP-depleted cells but not in the other cells was significantly lower (augmin and HURP [asterisks], P < 0.001; other cells, P > 0.04; by t test) than that in the control cells.

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