Model of microtubule-microtubule sliding driven by kinesin-1. Kinesin-1 slides antiparallel microtubules apart with their minus-ends leading (left panel). When kinesin-1 binds to parallel microtubules (right panel), forces applied by the two motors
During late oogenesis, Drosophila oocyte cytoplasm undergoes circular movement called ooplasmic streaming. Posterior determinants containing the fluorescently labeled marker Staufen move with the cytoplasmic flow, but dramatically slow down near the