Cited by 952Genetics and Neurodevelopmental DisordersRNA Research and SplicingRNA and protein synthesis mechanisms

Fragile X mental retardation protein targets G quartet mRNAs important for neuronal function

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Darnell, Jennifer C., Jensen, Kirk B., Jin, Peng, Brown, Victoria, Warren, Stephen T., Darnell, Robert B.·2001·Cell

Abstract

Loss of fragile X mental retardation protein (FMRP) function causes the fragile X mental retardation syndrome. FMRP harbors three RNA binding domains, associates with polysomes, and is thought to regulate mRNA translation and/or localization, but the RNAs to which it binds are unknown. We have used RNA selection to demonstrate that the FMRP RGG box binds intramolecular G quartets. This data allowed us to identify mRNAs encoding proteins involved in synaptic or developmental neurobiology that harbor FMRP binding elements. The majority of these mRNAs have an altered polysome association in fragile X patient cells. These data demonstrate that G quartets serve as physiologically relevant targets for FMRP and identify mRNAs whose dysregulation may underlie human mental retardation.

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Crossref · 10.1016/s0092-8674(01)00566-9

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  • FMRP binds to G-rich sequences (G-quartets) with consensus site DWGG-N(0-2)-DWGG-N(0-1)-DWGG-N(0-1)-DWGG.

    “FMRP binds to G-rich sequences (so-called G-quartets; consensus site: DWGG-N(0–2)-DWGG-N(0–1)-DWGG-N(0–1)-DWGG, where D is any nucleotide except C and W is A or U) [17] arranged in a planar conformation and stabilized by Hoogsteen-type hydrogen bonds.”
  • FMRP mostly acts as an mRNA-binding protein that represses translation of a subset of mRNAs.

    “Encoded by the FMR1 gene, Fragile X mental retardation protein (FMRP) mostly operates as an mRNA-binding protein (Fig. 5B2) that represses translation of an emerging subset of mRNAs (Brown et al., 2001; Darnell et al., 2001; Darnell et al., 2011; Santoro et al., 2012), among other functions (Contractor et al., 2015).”
  • FMRP binds RNA in vitro with high affinity for kissing complex and G-quadruplex motifs through its KH and RGG-type RNA-binding domains.

    “FMRP binds to RNA in vitro (Siomi et al., 1993) with high affinity for kissing complex and G-quadruplex motifs mediated through its KH and RGG-type RNA binding domains, respectively (Darnell et al., 2005a; Darnell et al., 2001).”

    From FMRP Stalls Ribosomal Translocation on mRNAs Linked to Synaptic Function and Autism (2011) · cites this paper as Darnell et al., 2001

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Authors
Darnell, J. C., Jensen, K. B., Jin, P., Brown, V., Warren, S. T., & Darnell, R. B.
Affiliations
  • Rockefeller University (US)
  • Howard Hughes Medical Institute (US)
Corresponding author
Darnell, Robert B.
Venue
Cell
Publisher
Elsevier BV
Published
2001-11
Volume
107
Issue
4
Pages
489-499
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2110811750
Cited by
952
References
87
Citations by year
2026: 12 · 2025: 13 · 2024: 22 · 2023: 21 · 2022: 23 · 2021: 32 · 2020: 36 · 2019: 30 · 2018: 30 · 2017: 38 · 2016: 31 · 2015: 42 · 2014: 38 · 2013: 44 · 2012: 38
FWCI
30.05
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
  • Adelaide Research & Scholarship (AR&S) (University of Adelaide) (submittedVersion)
Funders
  • National Institute of Neurological Disorders and Stroke (R01NS034389)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (R37HD020521, R01HD040647, P01HD035576)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Research and Splicing
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
Keywords
FMRP, fragile X syndrome, G-quartet, RGG box, RNA binding, polysome association, mRNA translation regulation, mRNA localization, synaptic proteins, neuronal development, RNA selection
MeSH terms
Base Sequence, Binding Sites, Codon, Dendrites, Fragile X Syndrome, Genetic Vectors, Humans, Ligands, Molecular Sequence Data, Nerve Tissue Proteins, Neurons, Nucleic Acid Conformation, Protein Binding, Regulatory Sequences, Nucleic Acid, Ribosomes, RNA, Messenger, Synapses, Protein Biosynthesis, Mutagenesis, Consensus Sequence, Sequence Alignment, RNA-Binding Proteins, Protein Structure, Tertiary, Nucleopolyhedroviruses, DNA, Complementary, Fragile X Messenger Ribonucleoprotein 1

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