Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Basic building blocks of microtubules. Microtubule nucleation in vivo occurs from the γ-tubulin ring complex (γ-TuRC). Heterodimers of α-β-tubulin are added to the growing microtubule with the β end of the dimer out. The end with β-tubulin exposed is the plus end, and undergoes dynamic instability.
