BIOL 361 Study Guide - Midterm Guide: Tubulin, Microtubule, Microfilament
Document Summary
Know the differences between the 3 components of the cytoskeleton. Think back to the chart that was used during the open book quiz. Know the differences between alpha and beta tubulin. Alpha and beta tubulin alternate along the length of a microtubule. Beta tubulin is the plus end, alpha tubulin is the minus end. Beta tubulin is the growing end, alpha tubulin is attached to the gamma tubulin ring. Centrosomes are the microtubule organizing center (mtoc) of animal cells. The number of protofilaments in the microtubule wall. Know what holds microtubules together, what types of enzymes work with them. Ring shaped structures form from gamma tubulin at the nucleation site. This seeds the growth of 1 microtubule. ab-tubulin dimers add to the y-tubulin ring. Microtubules will form spontaneously if ab-tubulin concentration is high, but not in cellular conditions. What is the difference between kinesins and dyneins.
