Tubulin-specific chaperone E is a protein that in humans is encoded by the TBCEgene.[1][2]
Cofactor E is one of four proteins (cofactors A, D, E, and C) involved in the pathway leading to correctly folded beta-tubulin from folding intermediates. Cofactors A and D are believed to play a role in capturing and stabilizing beta-tubulin intermediates in a quasi-native confirmation. Cofactor E binds to the cofactor D/beta-tubulin complex; interaction with cofactor C then causes the release of beta-tubulin polypeptides that are committed to the native state. Two transcript variants encoding the same protein have been found for this gene.[2]
The TBCE gene is either deleted or mutated in Sanjad-Sakati Syndrome
References
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Kortazar D, Fanarraga ML, Carranza G, et al. (2007). "Role of cofactors B (TBCB) and E (TBCE) in tubulin heterodimer dissociation". Exp. Cell Res. 313 (3): 425–36. doi:10.1016/j.yexcr.2006.09.002. PMID17184771.