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. 2009 Jul 15;20(14):3200–3208. doi: 10.1091/mbc.E09-03-0240

Figure 1.

Figure 1.

Retraction of MSP fibers is initiated by PP2A phosphatase. (A) Time-lapse sequences of fiber retraction triggered by YOP-treated S100 (top) and the inhibitory effect of 10 nM OA (bottom). Bar, 5 μm. (B) Retraction rate of fibers perfused with YOP-S100 in the presence of 1 mM OV, 100 nM calyculin A (CA), and 100 ng/μl I2 or 10 nM OA. (C) Time-lapse sequences of PP2A-triggered retraction (top) and its inhibition by OA. Bar, 5 μm. (D) Retraction rate of fibers induced by PP2A (0.1 U/perfusion) with or without 10 nM OA. Entries are the means of 10–15 fibers measured ± SD.