Fig. 1From: “Don’t Phos Over Tau”: recent developments in clinical biomarkers and therapies targeting tau phosphorylation in Alzheimer’s disease and other tauopathiesSchematic showing 2N4R tau (441 amino acids), the longest isoform expressed in human brain. Tau protein contains major structural domains including N-terminal domain with N1 and N2 inserts, proline rich region, four major microtubule-binding repeats (R1-R4), and C-terminal domain. The N1, N2 and R2 regions can be alternatively spliced in the human brain resulting in 6 isoforms: 0N3R, 1N3R, 2N3R, 0N4R, 1N4R, and 2N4R. The position of identified phosphorylation sites found in AD brains are shown [1,2,3,4,5]Back to article page