PMID- 1376245 OWN - NLM STAT- MEDLINE DCOM- 19920714 LR - 20220511 IS - 0261-4189 (Print) IS - 1460-2075 (Electronic) IS - 0261-4189 (Linking) VI - 11 IP - 6 DP - 1992 Jun TI - Mitogen activated protein (MAP) kinase transforms tau protein into an Alzheimer-like state. PG - 2131-8 AB - The microtubule-associated protein tau is a major component of the paired helical filaments (PHFs) observed in Alzheimer's disease brains. The pathological tau is distinguished from normal tau by its state of phosphorylation, higher apparent M(r) and reaction with certain antibodies. However, the protein kinase(s) have not been characterized so far. Here we describe a protein kinase from brain which specifically induces the Alzheimer-like state in tau protein. The 42 kDa protein belongs to the family of mitogen activated protein kinases (MAPKs) and is activated by tyrosine phosphorylation. It is capable of phosphorylating Ser-Pro and Thr-Pro motifs in tau protein (approximately 14-16 P1 per tau molecule). By contrast, other proline directed Ser/Thr kinases such as p34(cdc2) combined with cyclin A or B have only minor effects on tau phosphorylation. We propose that MAP kinase is abnormally active in Alzheimer brain tissue, or that the corresponding phosphatases are abnormally passive, due to a breakdown of the normal regulatory mechanisms. FAU - Drewes, G AU - Drewes G AD - Max-Planck-Unit for Structural Molecular Biology, Hamburg, Germany. FAU - Lichtenberg-Kraag, B AU - Lichtenberg-Kraag B FAU - Doring, F AU - Doring F FAU - Mandelkow, E M AU - Mandelkow EM FAU - Biernat, J AU - Biernat J FAU - Goris, J AU - Goris J FAU - Doree, M AU - Doree M FAU - Mandelkow, E AU - Mandelkow E LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - EMBO J JT - The EMBO journal JID - 8208664 RN - 0 (Recombinant Proteins) RN - 0 (tau Proteins) RN - 21820-51-9 (Phosphotyrosine) RN - 42HK56048U (Tyrosine) RN - EC 2.7.- (Protein Kinases) RN - EC 2.7.11.17 (Calcium-Calmodulin-Dependent Protein Kinases) SB - IM MH - Alzheimer Disease/*metabolism MH - Animals MH - Brain/*enzymology MH - Calcium-Calmodulin-Dependent Protein Kinases MH - Cattle MH - Chromatography, Ion Exchange MH - Cloning, Molecular MH - Electrophoresis, Polyacrylamide Gel MH - Enzyme Activation MH - Humans MH - Molecular Weight MH - Phosphorylation MH - Phosphotyrosine MH - Protein Kinases/genetics/isolation & purification/*metabolism MH - Recombinant Proteins/isolation & purification/metabolism MH - Reference Values MH - Substrate Specificity MH - Swine MH - Tyrosine/analogs & derivatives/analysis MH - tau Proteins/genetics/*metabolism PMC - PMC556680 EDAT- 1992/06/01 00:00 MHDA- 1992/06/01 00:01 PMCR- 1993/06/01 CRDT- 1992/06/01 00:00 PHST- 1992/06/01 00:00 [pubmed] PHST- 1992/06/01 00:01 [medline] PHST- 1992/06/01 00:00 [entrez] PHST- 1993/06/01 00:00 [pmc-release] AID - 10.1002/j.1460-2075.1992.tb05272.x [doi] PST - ppublish SO - EMBO J. 1992 Jun;11(6):2131-8. doi: 10.1002/j.1460-2075.1992.tb05272.x.