The product of this gene is a component of the centrosome, a non-membraneous organelle that functions as the major microtubule-organizing center in animal cells. During interphase, the encoded protein localizes to the sub-distal appendages of mature centrioles, which are microtubule-based structures thought to help organize centrosomes. During mitosis, the protein associates with spindle microtubules near the centrosomes. The protein interacts with and is phosphorylated by polo-like kinase 1, and functions in maintaining microtubule organization and cell morphology. The human genome contains a putative transcribed pseudogene. Several alternatively spliced transcript variants of this gene have been found, but the full-length nature of some of these variants has not been determined. [provided by RefSeq, Jul 2008].
Baron Gaillard, Pallesi-Pocachard, Massey-Harroche, Richard, Arsanto, Chauvin, Lecine, Krämer, Borg, Le Bivic: "Hook2 is involved in the morphogenesis of the primary cilium." in: Molecular biology of the cell, Vol. 22, Issue 23, pp. 4549-62, (2011) (PubMed).