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Different Forms of MARCKS Protein Are Involved in Memory Formation in the Learning Process of Imprinting

Overview
Journal Exp Brain Res
Specialty Neurology
Date 2008 Jun 3
PMID 18516597
Citations 16
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Abstract

There is strong evidence that a restricted part of the chick forebrain, the IMM (formerly IMHV), stores information acquired through the learning process of visual imprinting. Twenty-four hours after imprinting training, a learning-specific increase in amount of myristoylated, alanine-rich C-kinase substrate (MARCKS) protein is known to occur in the homogenate fraction of IMM. We investigated the two components of this fraction, membrane-bound and cytoplasmic-phosphorylated MARCKS. In IMM, amount of membrane-bound MARCKS, but not of cytoplasmic-phosphorylated MARCKS, increased as chicks learned. No changes were observed for either form of MARCKS in PPN, a control forebrain region. The results indicate that there is a learning-specific increase in membrane-bound, non-phosphorylated MARCKS 24 h after training. This increase might contribute to stabilization of synaptic morphology.

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