Cited by 108RNA Research and SplicingRNA and protein synthesis mechanismsRNA regulation and disease

GC content around splice sites affects splicing through pre-mRNA secondary structures

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Zhang, Jing, Kuo, CC Jay, Chen, Liang·2011·BMC Genomics

Abstract

BACKGROUND: Alternative splicing increases protein diversity by generating multiple transcript isoforms from a single gene through different combinations of exons or through different selections of splice sites. It has been reported that RNA secondary structures are involved in alternative splicing. Here we perform a genomic study of RNA secondary structures around splice sites in humans (Homo sapiens), mice (Mus musculus), fruit flies (Drosophila melanogaster), and nematodes (Caenorhabditis elegans) to further investigate this phenomenon. RESULTS: We observe that GC content around splice sites is closely associated with the splice site usage in multiple species. RNA secondary structure is the possible explanation, because the structural stability difference among alternative splice sites, constitutive splice sites, and skipped splice sites can be explained by the GC content difference. Alternative splice sites tend to be GC-enriched and exhibit more stable RNA secondary structures in all of the considered species. In humans and mice, splice sites of first exons and long exons tend to be GC-enriched and hence form more stable structures, indicating the special role of RNA secondary structures in promoter proximal splicing events and the splicing of long exons. In addition, GC-enriched exon-intron junctions tend to be overrepresented in tissue-specific alternative splice sites, indicating the functional consequence of the GC effect. Compared with regions far from splice sites and decoy splice sites, real splice sites are GC-enriched. We also found that the GC-content effect is much stronger than the nucleotide-order effect to form stable secondary structures. CONCLUSION: All of these results indicate that GC content is related to splice site usage and it may mediate the splicing process through RNA secondary structures.

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  • GC-enrichment should have a similar effect to 1-methyl-pseudouridine on RNA secondary structure stability.

    “CureVac uses GC-enrichment, which should have a similar effect (Hubert, 2021, Zhang et al., 2011).”

    From mRNA-lipid nanoparticle COVID-19 vaccines: structure and stability (2021) · cites this paper as Zhang et al., 2011

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Authors
Zhang, J., Kuo, C. J., & Chen, L.
Affiliations
University of Southern California (US)
Corresponding author
Chen, Liang
Venue
BMC Genomics
Published
2011-01-31
Volume
12
Issue
1
Pages
90-90
ISSN
1471-2164 (ISSN-L)
OpenAlex
W2074860825
Cited by
108
References
34
Citations by year
2026: 11 · 2025: 10 · 2024: 8 · 2023: 8 · 2022: 6 · 2021: 7 · 2020: 3 · 2019: 12 · 2018: 4 · 2017: 5 · 2016: 3 · 2015: 7 · 2014: 9 · 2013: 6 · 2012: 7
FWCI
3.11
Type
journal article
Language
en
Open access
Locations
  • BMC Genomics (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
  • National Institutes of Health
  • National Human Genome Research Institute (P50HG002790)
Topics
  • 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
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA regulation and disease
Keywords
GC content, splice sites, alternative splicing, RNA secondary structure, pre-mRNA splicing, exon-intron junctions, tissue-specific splicing
MeSH terms
Animals, Base Composition, Drosophila, Humans, Nucleic Acid Conformation, RNA Precursors, RNA Splicing, Caenorhabditis elegans, Mice

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