Newly formed tetraploid cells rapidly lose extra centrosomes acquired upon tetraploidization via asymmetric centrosome clustering during cell division and selective advantage of tetraploid daughter cells that inherit a single centrosome.
Building on previous work (Conduit et al., 2014), and contrary to what was previously thought, it is shown that key centrosomal proteins are not recruited to centrosomes as part of large multi-protein assemblies.
A newly discovered membrane structure associates with one of the centrioles and affects two important centrosomal events in epidermal cells – ciliary positioning and spindle orientation – through a physical interaction.
Experiments reveal mechanisms through which Caenorhabditis elegans zygotes depleted of Aurora A or lacking centrosomes spontaneously establish two posterior PAR-2 domains, one at each pole, in a curvature-dependent manner.
Kinesin-4 KIF21B promotes rapid reorientation of the microtubule network during formation of immunological synapse in T cells by acting as a pausing and catastrophe-inducing factor that keeps microtubules short.