Analysis of phosphorylation of tau with antibodies specific for phosphorylation sites - PubMed (original) (raw)
Analysis of phosphorylation of tau with antibodies specific for phosphorylation sites
K Ishiguro et al. Neurosci Lett. 1995.
Abstract
Previously, we determined sites of tau protein phosphorylation by tau protein kinase (TPK) I/glycogen synthase kinase 3 beta (GSK-3 beta) and TPKII/(cyclin-dependent kinase 5 (CDK5) + p23). We prepared antibodies specific for these sites of tau phosphorylated by TPKI and TPKII, using chemically synthesized phosphopeptides as antigens. Each antibody specifically reacts with each phosphorylation site. With these antibodies, it was confirmed that TPKI and TPKII are responsible for these phosphorylation sites, as reported previously, except that Ser404 is also weakly phosphorylated by TPKI alone. It was also observed that TPKII-phosphorylation enhances TPKI-phosphorylation. These results indicate that these antibodies are useful tools for investigation of the phosphorylation of tau by TPKI and TPKII.
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