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FMRP loss of function causes Fragile X syndrome (FXS) and autistic features. FMRP is a polyribosome-associated neuronal RNA-binding protein, suggesting that it plays a key role in regulating neuronal translation, but there has been little consensus regarding either its RNA targets or mechanism of action. Here, we use high-throughput sequencing of RNAs isolated by crosslinking immunoprecipitation (HITS-CLIP) to identify FMRP interactions with mouse brain polyribosomal mRNAs. FMRP interacts with the coding region of transcripts encoding pre- and postsynaptic proteins and transcripts implicated in autism spectrum disorders (ASD). We developed a brain polyribosome-programmed translation system, revealing that FMRP reversibly stalls ribosomes specifically on its target mRNAs. Our results suggest that loss of a translational brake on the synthesis of a subset of synaptic proteins contributes to FXS. In addition, they provide insight into the molecular basis of the cognitive and allied defects in FXS and ASD and suggest multiple targets for clinical intervention.
Pubmed ID: 21784246 RIS Download
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Database for genomes that have been completely sequenced, have active research community to contribute gene-specific information, or that are scheduled for intense sequence analysis. Includes nomenclature, map location, gene products and their attributes, markers, phenotypes, and links to citations, sequences, variation details, maps, expression, homologs, protein domains and external databases. All entries follow NCBI's format for data collections. Content of Entrez Gene represents result of curation and automated integration of data from NCBI's Reference Sequence project (RefSeq), from collaborating model organism databases, and from many other databases available from NCBI. Records are assigned unique, stable and tracked integers as identifiers. Content is updated as new information becomes available.
View all literature mentionsWorldwide authority that approves standardized nomenclature to gene name and symbol, short form abbreviation, for each known human gene and stores all approved symbols in HGNC database. Approved human gene nomenclature. Database of gene symbols. Manually curated genes into family sets based on shared characteristics such as homology, function or phenotype. Data for protein-coding genes, pseudogenes, non-coding RNAs, phenotypes and genomic features.
View all literature mentionsA neuroscience research program that studies genes, the brain and behavior in an integrated manner, established to elucidate the molecular mechanisms of learning and memory, and shed light on the pathogenesis of disorders of cognition. Central to G2C investigations is the NMDA receptor complex (NRC/MASC), that is found at the synapses in the central nervous system which constitute the functional connections between neurons. Changes in the receptor and associated components are thought to be in a large part responsible for the phenomenon of synaptic plasticity, that may underlie learning and memory. G2C is addressing the function of synapse proteins using large scale approaches combining genomics, proteomics and genetic methods with electrophysiological and behavioral studies. This is incorporated with computational models of the organization of molecular networks at the synapse. These combined approaches provide a powerful and unique opportunity to understand the mechanisms of disease genes in behavior and brain pathology as well as provide fundamental insights into the complexity of the human brain. Additionally, Genes to Cognition makes available its biological resources, including gene-targeting vectors, ES cell lines, antibodies, and transgenic mice, generated for its phenotyping pipeline. The resources are freely-available to interested researchers.
View all literature mentionsThe Autism Genetic Database currently contains the full list of autism susceptibility genes as well as all Copy Number Variations (CNVs) found to have a relationship to autism. Additionally, all noncoding RNA molecules (snoRNA, miRNA, and piRNA) and chemically induced fragile sites are stored as well. This information is currently accessible via an in-house human genome browser focusing specifically on the chromosomal features associated with autism, and in a tabular format broken down by chromosome. Genome Browser:A genome browser that displays the genes, CNVs, ncRNAs and fragile sites in an easily accessible graphical visualization tool Tabular Data Display:A tabular data display that allows the user to observe the chromosomal spatial relationship between the genes, CNVs, ncRNAs and fragile sites. This also provides links to Entrez and pubmed for each gene, as well as miRBase for miRNAs, snoRNA-LBME-db for snoRNAs, and piRNABank for piRNAs.
View all literature mentionsSoftware used for Bio-Rad imaging systems to acquire, quantitate, and analyze a variety of data. The software allows automatic configuration of imaging systems with appropriate filters, lasers, LEDs, and other illumination sources. It also contains tools for automated analysis of tests and assays such as 1-D electrophoretic gels, western blots, and colony counts.
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