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Hippocampal γCaMKII dopaminylation promotes synaptic-to-nuclear signaling and memory formation
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Hippocampal γCaMKII dopaminylation promotes synaptic-to-nuclear signaling and memory formation
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Journal Article
Hippocampal γCaMKII dopaminylation promotes synaptic-to-nuclear signaling and memory formation
2024
Overview
Protein monoaminylation is a class of posttranslational modification (PTM) that contributes to transcription, physiology and behavior. While recent analyses have focused on histones as critical substrates of monoaminylation, the broader repertoire of monoaminylated proteins in brain remains unclear. Here, we report the development/implementation of a chemical probe for the bioorthogonal labeling, enrichment and proteomics-based detection of dopaminylated proteins in brain. We identified 1,557 dopaminylated proteins - many synaptic - including γCaMKII, which mediates Ca
-dependent cellular signaling and hippocampal-dependent memory. We found that γCaMKII dopaminylation is largely synaptic and mediates synaptic-to-nuclear signaling, neuronal gene expression and intrinsic excitability, and contextual memory. These results indicate a critical role for synaptic dopaminylation in adaptive brain plasticity, and may suggest roles for these phenomena in pathologies associated with altered monoaminergic signaling.
Publisher
Cold Spring Harbor Laboratory
Subject
