To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 1 Related to figure 1B. Time-lapse movie showing a mitotic HeLa cell stably expressing Samp1aYFP, enhanced to visualize GFP fluorescence in the mitotic spindle. Frame rate 3 min. Scale bar 10μm. Mitotic spindle assembly and γ-tubulin localisation depend on the integral nuclear membrane protein Samp1 Veronica J. Larsson, Mohammed Hakim Jafferali, Balaje Vijayaraghavan, Ricardo A. Figueroa, and Einar Hallberg J Cell Sci 2018. 131:None-None; doi: 10.1242/jcs.211664 Download Original Video