Abstract：
:Endogenous phosphorylation of proteins from rat brain synaptosomal plasma membranes was studied in vitro. Cyclic AMP (cAMP) markedly stimulated(32)P incorporation in three protein bands with molecular weights of 75,000, 57,000, and 54,000, respectively. The effect of the behaviorally active peptide ACTH1-24 on this endogenous phosphorylation in vitro was studied using peptide concentrations from 10(-10) to 10(-4) M. In a number of protein bands, a biphasic effect of ACTH1-24 was observed: in concentrations of 10(-4)-10(-5) M, a reduced amount of(32)P was found; in concentrations of 10(-6)-10(-7) M, hardly any effect could be detected, whereas consistently at concentrations around 10(-8) M, a significant decrease was again observed. The phosphoprotein bands affected by in vitro addition of ACTH1-24 were of a smaller molecular weight than those affected by in vitro addition of cAMP.
journal_name
Neurochem Resjournal_title
Neurochemical researchauthors
Zwiers H,Veldhuis HD,Schotman P,Gispen WHdoi
10.1007/BF00965607subject
Has Abstractpub_date
1976-12-01 00:00:00pages
669-77issue
6eissn
0364-3190issn
1573-6903journal_volume
1pub_type
杂志文章abstract：:The synaptic glutamate level homeostasis is mainly maintained by the astrocytes membrane bound glutamate transporter type-1 (GLT-1/EAAT2). Alterations in its expression during development and aging and the underlying mechanisms are not well studied. Here, we report that NF-κB interaction was highest in both cerebral a...
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