Predicted to enable GTP binding activity. Predicted to be a structural constituent of cytoskeleton. Predicted to be involved in microtubule-based process. Predicted to be located in microtubule. Is an ortholog of C. elegans tba-2. In C. elegans, tba-2 is involved in several processes, including centrosome localization; establishment of mitotic spindle orientation; and regulation of cytokinesis.