Journal
SCIENCE SIGNALING
Volume 1, Issue 5, Pages -Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/stke.15pe6
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Fragile X syndrome (FXS) mental retardation is caused by loss-of-function mutations in an RNA-binding protein, fragile X mental retardation protein (FMRP). Previous studies in patients or animal models of FXS have identified alterations in dendritic spine structure, as well as synaptic plasticity induced by metabotropic glutamate receptors (mGluRs). The translation of multiple messenger RNA (mRNA) targets of FMRP is regulated by mGluRs at synapses. Here, we incorporate data from several studies into a working model of how FMRP regulates mGluR-stimulated protein synthesis and, in turn, regulates protein synthesis-dependent synaptic plasticity. Understanding the comple X functions of FMRP at the synapse will lead to a better understanding of the neurobiological underpinnings of mental retardation.
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