Function
Tau-tubulin kinase (TTBK) phosphorylates microtubule-associated protein tau and tubulin[1]. TTBK contains 2 isomers: TTBK1 and TTBK2 which are expressed in different tissues. TTBK1 and TTBK2 are homologous in their catalytic domains with identical catalytic residues, but different in their non-catalytic domains. TTBK2 serves a critical function in cilia genesis[2].
Disease
Mutations in TTBK1 and in particular the R142Q mutation is involved in taupathogenesis like in Alzheimer Disease[3].
Relevance
TTBK1 inhibitors are promising candidates for Alzheimer Disease therapy[4].
Structural highlights
Tau-tubulin kinase 3D structures
Tau-tubulin kinase 3D structures
References
- ↑ Ikezu S, Ikezu T. Tau-tubulin kinase. Front Mol Neurosci. 2014 Apr 28;7:33. PMID:24808823 doi:10.3389/fnmol.2014.00033
- ↑ Liao JC, Yang TT, Weng RR, Kuo CT, Chang CW. TTBK2: a tau protein kinase beyond tau phosphorylation. Biomed Res Int. 2015;2015:575170. PMID:25950000 doi:10.1155/2015/575170
- ↑ Ahamad S, Hema K, Kumar V, Gupta D. The structural, functional, and dynamic effect of Tau tubulin kinase1 upon a mutation: A neuro-degenerative hotspot. J Cell Biochem. 2021 Nov;122(11):1653-1664. PMID:34297427 doi:10.1002/jcb.30112
- ↑ Martinez-Gonzalez L, Cuevas EP, Tosat-Bitrián C, Nozal V, Gil C, Palomo V, Martín-Requero Á, Martinez A. TTBK1 and CK1 inhibitors restore TDP-43 pathology and avoid disease propagation in lymphoblast from Alzheimer's disease patients. Front Mol Neurosci. 2023 Aug 9;16:1243277. PMID:37621404 doi:10.3389/fnmol.2023.1243277
