ArticleRNA (New York, N.Y.)2013
Distinct binding interactions of HIV-1 Gag to Psi and non-Psi RNAs: implications for viral genomic RNA packaging.
Article in RNA (New York, N.Y.), 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 70 papers.
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Who cites it
70 citing papers in PubMed, 93 citations in OpenAlex.
- Article
- Mechanisms of APOBEC3 Packaging into HIV-1.Viruses · 2026Review
- Mechanism of SARS-CoV-2 Nucleocapsid Protein Phosphorylation-Induced Functional Switch.Viruses · 2026Article
- Specific Nucleic Acid Chaperone Activity of HIV-1 Nucleocapsid Protein Deduced from Hairpin Unfolding.Methods in molecular biology (Clifton, N.J.) · 2026Article
- Two Peas in a Pod: Retroviral RNA Dimers Organize Gag-RNA Nanoclusters with Novel Biophysical Properties.International journal of molecular sciences · 2025Article
- Two peas in a pod: retroviral RNA dimers organize Gag-RNA nanoclusters with novel biophysical properties.bioRxiv : the preprint server for biology · 2025Article
- Article
- MMTV RNA packaging requires an extended long-range interaction for productive Gag binding to packaging signals.PLoS biology · 2024Article
- Kinetic Studies on the Interaction of HIV-1 Gag Protein with the HIV-1 RNA Packaging Signal.Viruses · 2024Article
- Article
- Structure of the HIV immature lattice allows for essential lattice remodeling within budded virions.eLife · 2023Article
- The preference signature of the SARS-CoV-2 Nucleocapsid NTD for its 5'-genomic RNA elements.Nature communications · 2023Article
- Distinct Gag interaction properties of HIV-1 RNA 5' leader conformers reveal a mechanism for dimeric genome selection.RNA (New York, N.Y.) · 2023Article
- Initiation of HIV-1 Gag lattice assembly is required for recognition of the viral genome packaging signal.eLife · 2023Article
- Upstream of N-Ras (Unr/CSDE1) Interacts with NCp7 and Gag, Modulating HIV-1 IRES-Mediated Translation Initiation.Viruses · 2022Article
- Inositol Hexakisphosphate (IP6) Accelerates Immature HIV-1 Gag Protein Assembly toward Kinetically Trapped Morphologies.Journal of the American Chemical Society · 2022Article
- Human Retrovirus Genomic RNA Packaging.Viruses · 2022Review
- HIV-1 Nucleocapsid Protein Binds Double-Stranded DNA in Multiple Modes to Regulate Compaction and Capsid Uncoating.Viruses · 2022Article
- Selective packaging of HIV-1 RNA genome is guided by the stability of 5' untranslated region polyA stem.Proceedings of the National Academy of Sciences of the United States of America · 2021Article
- HIV-1 integrase binding to genomic RNA 5'-UTR induces local structural changes in vitro and in virio.Retrovirology · 2021Article
10 more citing papers are in PubMed but not listed here.
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Authors and funding
5 authors at 3 institutions in 1 country.
Funding
Abstract
Despite the vast excess of cellular RNAs, precisely two copies of viral genomic RNA (gRNA) are selectively packaged into new human immunodeficiency type 1 (HIV-1) particles via specific interactions between the HIV-1 Gag and the gRNA psi (ψ) packaging signal. Gag consists of the matrix (MA), capsid, nucleocapsid (NC), and p6 domains. Binding of the Gag NC domain to ψ is necessary for gRNA packaging, but the mechanism by which Gag selectively interacts with ψ is unclear. Here, we investigate the binding of NC and Gag variants to an RNA derived from ψ (Psi RNA), as well as to a non-ψ region (TARPolyA). Binding was measured as a function of salt to obtain the effective charge (Zeff) and nonelectrostatic (i.e., specific) component of binding, Kd(1M). Gag binds to Psi RNA with a dramatically reduced Kd(1M) and lower Zeff relative to TARPolyA. NC, GagΔMA, and a dimerization mutant of Gag bind TARPolyA with reduced Zeff relative to WT Gag. Mutations involving the NC zinc finger motifs of Gag or changes to the G-rich NC-binding regions of Psi RNA significantly reduce the nonelectrostatic component of binding, leading to an increase in Zeff. These results show that Gag interacts with gRNA using different binding modes; both the NC and MA domains are bound to RNA in the case of TARPolyA, whereas binding to Psi RNA involves only the NC domain. Taken together, these results suggest a novel mechanism for selective gRNA encapsidation.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.