kinetochore
"One model that has been suggested is that a kinetochore is like a sliding collar, in which motor proteins maintain contact with tubulin molecules at or near the ... "
"The kinetochore does have motor proteins... think of the mitotic spindle as an anchor with a rope (the rope being the microtubules). The kinetochore is like a man climbing up the rope - he's actually putting force on the rope to move himself along. (the kinetochore also breaks down the microtubule as it goes along). "
METAMIA is a free database of analogy and metaphor. Anyone can contribute or search. The subject matter can be anything. Science is popular, but poetry is encouraged. The goal is to integrate our fluid muses with the stark literalism of a relational database. Metamia is like a girdle for your muses, a cognitive girdle.