This entry represents a C-terminal domain found in the the proteins TACC 1, 2 and 3 (TACC1-3). TACC1 is found concentrated in the centrosomes of eukaryotes which may play a conserved role in organising centrosomal microtubules. The human TACC proteins have been linked to cancer and TACC2 has been identified as a possible tumour suppressor (AZU-1) [1]. TACC 3 from Xenopus laevis, also known as maskin, associates XMAP215 and promotes efficient microtubule elongation during mitosis [2]. Maskin is also found to bind CPEB and elF-4E [3]. Interestingly, the functional homologue (Alp7) in Schizosaccharomyces pombe (not included in this entry) has been shown to be required for organisation of bipolar spindles [4].

1: The TACC domain identifies a family of centrosomal proteins that can interact with microtubules. Gergely F, Karlsson C, Still I, Cowell J, Kilmartin J, Raff JW; Proc Natl Acad Sci U S A 2000;97:14352-14357. PMID:11121038

2: XTACC3-XMAP215 association reveals an asymmetric interaction promoting microtubule elongation. Mortuza GB, Cavazza T, Garcia-Mayoral MF, Hermida D, Peset I, Pedrero JG, Merino N, Blanco FJ, Lyngso J, Bruix M, Pedersen JS, Vernos I, Montoya G; Nat Commun. 2014;5:5072. PMID:25262927

3: Maskin is a CPEB-associated factor that transiently interacts with elF-4E. Stebbins-Boaz B, Cao Q, de Moor CH, Mendez R, Richter JD; Mol Cell. 1999;4:1017-1027. PMID:10635326

4: Interdependency of fission yeast Alp14/TOG and coiled coil protein Alp7 in microtubule localization and bipolar spindle formation. Sato M, Vardy L, Angel Garcia M, Koonrugsa N, Toda T; Mol Biol Cell. 2004;15:1609-1622. PMID:14742702