Tau iso5 a microtubule-associated protein that regulates microtubule assembly and stability. Apparently involved in the establishment and maintenance of neuronal polarity. Mutations can result in several neurodegenerative disorders such as Alzheimer's disease, Pick's disease, frontotemporal dementia, cortico-basal degeneration and progressive supranuclear palsy. The C-terminus binds axonal microtubules while the N-terminus binds neural plasma membrane components, suggesting that tau functions as a linker. Axonal polarity is predetermined by tau localization (in the neuronal cell) in the domain of the cell body defined by the centrosome. Nine differentially spliced isoforms have been described. The short isoforms allow plasticity of the cytoskeleton, whereas the longer isoforms may preferentially play a role in its stabilization. Note: This description may include information from UniProtKB.
Protein type: Cytoskeletal
Chromosomal Location of Human Ortholog: 17q21.31
Cellular Component:  axolemma; axon; axon cytoplasm; cell body; cell soma; cytoplasm; cytoplasmic ribonucleoprotein granule; cytosol; dendrite; dendritic spine; extracellular region; growth cone; intracellular; main axon; membrane; membrane raft; microtubule; microtubule cytoskeleton; mitochondrion; neuron projection; nuclear periphery; nuclear speck; nucleus; plasma membrane; somatodendritic compartment; tubulin complex
Molecular Function:  actin binding; apolipoprotein binding; AT DNA binding; chaperone binding; DNA binding; double-stranded DNA binding; enzyme binding; histone-dependent DNA binding; Hsp90 protein binding; identical protein binding; lipoprotein particle binding; microtubule binding; phosphatidylinositol binding; protein binding; protein binding, bridging; protein homodimerization activity; protein kinase binding; protein phosphatase 2A binding; receptor ligand activity; RNA binding; sequence-specific DNA binding; SH3 domain binding; single-stranded DNA binding
Biological Process:  activation of cysteine-type endopeptidase activity involved in apoptotic process; amyloid fibril formation; astrocyte activation; axonal transport; axonal transport of mitochondrion; cell-cell signaling; cellular response to brain-derived neurotrophic factor stimulus; cellular response to heat; cellular response to reactive oxygen species; central nervous system neuron development; cytoplasmic microtubule organization; generation of neurons; internal protein amino acid acetylation; intracellular distribution of mitochondria; memory; microglial cell activation; microtubule cytoskeleton organization; microtubule polymerization; negative regulation of gene expression; negative regulation of kinase activity; negative regulation of mitochondrial fission; negative regulation of mitochondrial membrane potential; negative regulation of tubulin deacetylation; neuron projection development; plus-end-directed organelle transport along microtubule; positive regulation of axon extension; positive regulation of diacylglycerol kinase activity; positive regulation of microtubule polymerization; positive regulation of neuron death; positive regulation of superoxide anion generation; protein oligomerization; regulation of autophagy; regulation of calcium-mediated signaling; regulation of cellular response to heat; regulation of chromosome organization and biogenesis; regulation of long term synaptic depression; regulation of microtubule polymerization; regulation of microtubule polymerization or depolymerization; regulation of mitochondrial fission; regulation of receptor activity; regulation of response to DNA damage stimulus; regulation of synaptic plasticity; response to lead ion; rRNA metabolic process; stress granule assembly; synapse organization
Reference #:  P10636-5 (UniProtKB)
Alt. Names/Synonyms: DDPAC; FLJ31424; FTDP-17; G protein beta1/gamma2 subunit-interacting factor 1; MAPT; MAPTL; MGC138549; Microtubule-associated protein tau; MSTD; MTBT1; MTBT2; Neurofibrillary tangle protein; Paired helical filament-tau; PHF-tau; PPND; TAU
Gene Symbols: MAPT
Molecular weight: 42,603 Da
Basal Isoelectric point: 6.85  Predict pI for various phosphorylation states
CST Pathways:  Alzheimer's Disease  |  Microtubule Dynamics  |  Regulation of P38 MAPKs
Protein-Specific Antibodies or siRNAs from Cell Signaling Technology® Total Proteins
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Tau iso5

Protein Structure Not Found.


Cross-references to other databases:  cBioPortal  |  Wikipedia  |  Pfam  |  UniProtKB  |  Entrez-Gene  |  GenPept  |  Ensembl Gene  |  Ensembl Protein