Three-dimensional arrangement of F-actin in the contractile ring of fission yeast

摘要: The contractile ring, which is required for cytokinesis in animal and yeast cells, consists mainly of actin filaments. Here, we investigate the directionality filaments fission using myosin S1 decoration electron microscopy. ring composed around 1,000 to 2,000 each 0.6 μm length. During early stages cytokinesis, two semicircular populations parallel opposite directionality. At later stages, before contraction, show mixed We consider that initially assembled from a single site division plane subsequently rearrange contraction initiates.