Microtubule-associated force-producing protein which is involved in the production of microtubule bundles and which is able to bind and hydrolyze GTP. Implicated in endocytic protein sorting. GTP + H2O = GDP + H(+) + phosphate Microtubule-associated. Shibire mutation is the cause of temperature-sensitive paralysis. This is believed to be due to a reversible block of endocytosis, which prevents membrane cycling and thus depletes synaptic vesicles. 'Shibire' means 'paralyzed' in Japanese. Belongs to the TRAFAC class dynamin-like GTPase superfamily. Dynamin/Fzo/YdjA family. Chimeric cDNA. There is a 6 amino acid insertion at position 634 due to a chimera of DNA from chromosome arms X and 3L. Chimeric cDNA. There is a 6 amino acid insertion at position 634 due to a chimera of DNA from chromosome arms X and 3L. Chimeric cDNA. There is a 6 amino acid insertion at position 634 due to a chimera of DNA from chromosome arms X and 3L.