rdf:type |
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lifeskim:mentions |
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pubmed:dateCreated |
1977-5-20
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pubmed:abstractText |
This work supports the idea that PDEA is bound and stored in brain particulate fraction. The release of PDEA into cytosol where the activator-sensitive PDE is located, is the first event in the process of the regulation of cAMP metabolism and inactivation. PDEA is released by cAMP-dependent phosphorylation of the activator-binding sites. This process is Ca2+ independent and does not occur in the presence of cGMP and cGMP-dependent phosphorylation. The free, soluble PDEA activates the high Km PDE in the presence of micromolar concentrations of Ca2+. This protein decreases severalfold the Km for cAMP of the high Km activator-sensitive PDE. PDEA regulates cAMP metabolism when the concentration of cAMP is elevated by a transsynaptic activation of adenylate cyclase. The rate of synthesis and the release of PDEA might be a part of the process of receptor sub- and supersensitivity, which has been reported during denervation or as a result of chronic treatment with drugs.
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pubmed:language |
eng
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pubmed:journal |
|
pubmed:citationSubset |
IM
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pubmed:chemical |
|
pubmed:status |
MEDLINE
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pubmed:issn |
0065-2229
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pubmed:author |
|
pubmed:issnType |
Print
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pubmed:volume |
15
|
pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
283-301
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pubmed:dateRevised |
2009-11-19
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pubmed:meshHeading |
pubmed-meshheading:15421-Adenosine Triphosphate,
pubmed-meshheading:15421-Adrenal Medulla,
pubmed-meshheading:15421-Animals,
pubmed-meshheading:15421-Brain,
pubmed-meshheading:15421-Calcium,
pubmed-meshheading:15421-Carbachol,
pubmed-meshheading:15421-Cyclic AMP,
pubmed-meshheading:15421-Cyclic GMP,
pubmed-meshheading:15421-Enzyme Activation,
pubmed-meshheading:15421-Kinetics,
pubmed-meshheading:15421-Male,
pubmed-meshheading:15421-Nerve Tissue Proteins,
pubmed-meshheading:15421-Neurotransmitter Agents,
pubmed-meshheading:15421-Phosphoric Diester Hydrolases,
pubmed-meshheading:15421-Protein Kinases,
pubmed-meshheading:15421-Rats,
pubmed-meshheading:15421-Subcellular Fractions
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pubmed:year |
1976
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pubmed:articleTitle |
A neurobiological role for a protein activator of cyclic nucleotide phosphodiesterase.
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pubmed:publicationType |
Journal Article,
Review
|