2vvn
BtGH84 in complex with NH-Butylthiazoline
Structural highlights
FunctionOGA_BACTN Biological function unknown. Capable of hydrolyzing the glycosidic link of O-GlcNAcylated proteins. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedPathological hyperphosphorylation of the microtubule-associated protein tau is characteristic of Alzheimer's disease (AD) and the associated tauopathies. The reciprocal relationship between phosphorylation and O-GlcNAc modification of tau and reductions in O-GlcNAc levels on tau in AD brain offers motivation for the generation of potent and selective inhibitors that can effectively enhance O-GlcNAc in vertebrate brain. We describe the rational design and synthesis of such an inhibitor (thiamet-G, K(i) = 21 nM; 1) of human O-GlcNAcase. Thiamet-G decreased phosphorylation of tau in PC-12 cells at pathologically relevant sites including Thr231 and Ser396. Thiamet-G also efficiently reduced phosphorylation of tau at Thr231, Ser396 and Ser422 in both rat cortex and hippocampus, which reveals the rapid and dynamic relationship between O-GlcNAc and phosphorylation of tau in vivo. We anticipate that thiamet-G will find wide use in probing the functional role of O-GlcNAc in vertebrate brain, and it may also offer a route to blocking pathological hyperphosphorylation of tau in AD. A potent mechanism-inspired O-GlcNAcase inhibitor that blocks phosphorylation of tau in vivo.,Yuzwa SA, Macauley MS, Heinonen JE, Shan X, Dennis RJ, He Y, Whitworth GE, Stubbs KA, McEachern EJ, Davies GJ, Vocadlo DJ Nat Chem Biol. 2008 Aug;4(8):483-90. Epub 2008 Jun 29. PMID:18587388[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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