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. 2015 Jun 15;26(12):2242–2251. doi: 10.1091/mbc.E15-01-0041

FIGURE 1:

FIGURE 1:

The deubiquitinase activity of VCIP135 is inhibited during mitosis. (A) Asynchronous HeLa cells were immunoprecipitated using control (Ctr) or VCIP135 (135) antibodies. All eight individual di-ubiquitin molecules were treated with the precipitates; this was followed by Western blot for ubiquitin. Lane numbers are denoted underneath the gels in this and all following figures. (B) Quantitation of A to show the ratio of Ub1 to the sum of Ub1 and Ub2. Results are expressed as the mean ± SEM from three independent experiments. (C) VCIP135 immunoprecipitated from asynchronous interphase (Int) or nocodazole-arrested mitotic (Mit) HeLa cells was incubated with K48- or K63-linked di-ubiquitin. Note that mitotic VCIP135 has reduced activity for both di-ubiquitin molecules.