Rhizobiales-like Phosphatase 2 from Arabidopsis thaliana Is a Novel Phospho-tyrosine-specific Phospho-protein Phosphatase (PPP) Family Protein Phosphatase
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Protein phosphatase 2A is a specific protamine-kinase-inactivating phosphatase.
Purified preparations of a protamine protein kinase from bovine kidney cytosol [Damuni, Amick & Sneed (1989) J. Biol. Chem. 264, 6412-6416] were inactivated after incubation with near-homogeneous preparations of protein phosphatase 2A1 and protein phosphatase 2A2. These protein phosphatase 2A-mediated inactivations of the protamine kinase were unaffected by highly purified preparations of inhib...
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The tyrosine kinase Ron, receptor for MSP (macrophage-stimulating protein), displays several serine residues of unknown functions. Using [(32)P]H(3)PO(4) metabolic labelling, we found that Ron is serine-phosphorylated and dephosphorylated in vitro by PP1 (protein phosphatase 1). PP1 associates with Ron obtained from cells of different origins. The association is stimulated by MSP or serum and i...
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UNLABELLED Reversible phosphorylation, a fundamental regulatory mechanism required for many biological processes including memory formation, is coordinated by the opposing actions of protein kinases and phosphatases. Type I protein phosphatase (PP1), in particular, has been shown to constrain learning and memory formation. However, how PP1 might be regulated in memory is still not clear. Our pr...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 2016
ISSN: 0021-9258
DOI: 10.1074/jbc.m115.683656