Centrosomal protein which may be required for microtubule attachment to centrosomes. May act by forming ring-like structures around microtubules. Mediates nuclear translocation and mitogenic activity of the internalized growth factor FGF2 (By similarity). Homodimer and homooligomer. Interacts with FGF2 and RAP80. Does not interact with FGF1 or FGF2 isoform 24 kDa. Interacts with microtubules (By similarity). The C-terminal region mediates the interaction with microtubules and is able to nucleate and bundles microtubules in vitro. The centrosome localization domain (CLD) region mediates the localization to centrosomes and homooligomerization. Belongs to the translokin family. Contaminating sequence. Potential poly-A sequence.