microtubule

Is Tubulin A GTPase? Tubulin has GTPase activity and the GTP molecules associated with β-tubulin molecules are hydrolyzed shortly after being incorporated into the polymerizing microtubules. GTP hydrolysis alters the conformation of the tubulin molecules and drives the dynamic behavior of microtubules. What type of substance is tubulin? The tubulin proteins α- and β polymerize