1. Microtubule Polymerization: One Step at a Time
David Sept 
Current Biology 
Volume 17, Issue 17, Pages R764-R766 (September 2007)
DOI: /j.cub
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2. Figure 1 Microtubule structures during growth and shrinkage.
Since protofilaments with GDP–tubulin prefer a curved conformation, it has been postulated that one or more terminal layers of GTP–tubulin help keep the end of the microtubule straight.
Current Biology  , R764-R766DOI: ( /j.cub )
Copyright © 2007 Elsevier Ltd Terms and Conditions

3. Figure 2 The dynamic instability exhibited during microtubule growth.
Regular polymerization is interrupted by catastrophes and subsequent rescues.
Current Biology  , R764-R766DOI: ( /j.cub )
Copyright © 2007 Elsevier Ltd Terms and Conditions