RGD Reference Report - Postsynaptic recruitment of Dendrin depends on both dendritic mRNA transport and synaptic anchoring. - Rat Genome Database

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Postsynaptic recruitment of Dendrin depends on both dendritic mRNA transport and synaptic anchoring.

Authors: Kremerskothen, Joachim  Kindler, Stefan  Finger, Indra  Veltel, Stefan  Barnekow, Angelika 
Citation: Kremerskothen J, etal., J Neurochem. 2006 Mar;96(6):1659-66. doi: 10.1111/j.1471-4159.2006.03679.x. Epub 2006 Feb 8.
RGD ID: 21201256
Pubmed: PMID:16464232   (View Abstract at PubMed)
DOI: DOI:10.1111/j.1471-4159.2006.03679.x   (Journal Full-text)

Synaptic plasticity and memory formation involve remodeling of the postsynaptic cytoskeleton, a process that is in part based on both local translation of dendritic mRNAs and synaptic recruitment of newly synthesized proteins. The postsynaptic component Dendrin that is encoded by a dendritically localized mRNA is thought to modulate the structure of the synaptic cytoskeleton. However, molecular mechanisms that control extrasomatic Dendrin mRNA transport and postsynaptic protein recruitment are unknown. The data presented here reveal that Dendrin interacts with the cytoskeletal components alpha-actinin and Maguk with inverted orientation (MAGI) or synaptic scaffolding molecule (S-SCAM). The latter retains Dendrin in the cytoplasm of mammalian cells and prevents its nuclear import. Furthermore in neurons, postsynaptic clustering of Dendrin requires dendritic targeting of its messenger RNA (mRNA), a process that is mediated by a sequence motif within the 3' untranslated region. In summary our finding suggest that postsynaptic recruitment of Dendrin appears to critically depend on both local protein synthesis and association with the synaptic scaffolding protein MAGI/S-SCAM. Its nuclear localization capacity further points to a function in retrograde signaling from the synapse to the nucleus.

Gene Ontology Annotations    Click to see Annotation Detail View

Molecular Function
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
protein binding enablesIPIUniProtKB:P5061721201256PMID:16464232UniProt 
protein binding enablesIPIUniProtKB:Q9Z1P221201256PMID:16464232UniProt 

Objects Annotated

Genes (Rattus norvegicus)
Actn1  (actinin, alpha 1)
Ddn  (dendrin)


Additional Information