Evidence map›Paper›PMID 21931546›Full record

ArticlePLoS pathogens2011

Discovery of the first insect nidovirus, a missing evolutionary link in the emergence of the largest RNA virus genomes.

Phan Thi Nga, Maria del Carmen Parquet, Chris Lauber, Manmohan Parida, Takeshi Nabeshima, Fuxun Yu, Nguyen Thanh Thuy, Shingo Inoue, Takashi Ito, Kenta Okamoto and 4 more

Open access · goldAbstract read
In one paragraph

Article in PLoS pathogens, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 135 papers.

0numbers the graph read from it
0cells of the map it votes in
135citing papers in PubMed
13.5field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

135 citing papers in PubMed, 203 citations in OpenAlex.

  1. Review
  2. Discovery of the order 'Virus evolution · 2026
    Article
  3. Article
  4. Article
  5. Evolutionarily divergent nidovirus with an exceptionally large genome identified in Pacific oysters undergoing mass mortality.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  6. Review
  7. Insect-specific Alphamesonivirus-1 (Journal of virology · 2025
    Article
  8. Article
  9. Giant RNA genomes: Roles of host, translation elongation, genome architecture, and proteome in nidoviruses.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  10. Unchecked growth: Pushing the limits on RNA virus genome size in the absence of known proofreading.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  11. A ~40-kb flavi-like virus does not encode a known error-correcting mechanism.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  12. Recurrent viral capture of cellular phosphodiesterases that antagonize OAS-RNase L.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. Article

75 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

14 authors at 3 institutions in 3 countries.

Phan Thi NgaDepartment of Virology, National Institute of Hygiene and Epidemiology, Hanoi, Vietnam.
Maria del Carmen Parquet
Chris Lauber
Manmohan Parida
Takeshi Nabeshima
Fuxun Yu
Nguyen Thanh Thuy
Shingo Inoue
Takashi Ito
Kenta Okamoto
Akitoyo Ichinose
Eric J Snijder
Kouichi Morita
Alexander E Gorbalenya
Nagasaki University · JPLeiden University Medical Center · NLNational Institute Of Hygiene And Epidemiology · VN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Nidoviruses with large genomes (26.3-31.7 kb; 'large nidoviruses'), including Coronaviridae and Roniviridae, are the most complex positive-sense single-stranded RNA (ssRNA+) viruses. Based on genome size, they are far separated from all other ssRNA+ viruses (below 19.6 kb), including the distantly related Arteriviridae (12.7-15.7 kb; 'small nidoviruses'). Exceptionally for ssRNA+ viruses, large nidoviruses encode a 3'-5'exoribonuclease (ExoN) that was implicated in controlling RNA replication fidelity. Its acquisition may have given rise to the ancestor of large nidoviruses, a hypothesis for which we here provide evolutionary support using comparative genomics involving the newly discovered first insect-borne nidovirus. This Nam Dinh virus (NDiV), named after a Vietnamese province, was isolated from mosquitoes and is yet to be linked to any pathology. The genome of this enveloped 60-80 nm virus is 20,192 nt and has a nidovirus-like polycistronic organization including two large, partially overlapping open reading frames (ORF) 1a and 1b followed by several smaller 3'-proximal ORFs. Peptide sequencing assigned three virion proteins to ORFs 2a, 2b, and 3, which are expressed from two 3'-coterminal subgenomic RNAs. The NDiV ORF1a/ORF1b frameshifting signal and various replicative proteins were tentatively mapped to canonical positions in the nidovirus genome. They include six nidovirus-wide conserved replicase domains, as well as the ExoN and 2'-O-methyltransferase that are specific to large nidoviruses. NDiV ORF1b also encodes a putative N7-methyltransferase, identified in a subset of large nidoviruses, but not the uridylate-specific endonuclease that - in deviation from the current paradigm - is present exclusively in the currently known vertebrate nidoviruses. Rooted phylogenetic inference by Bayesian and Maximum Likelihood methods indicates that NDiV clusters with roniviruses and that its branch diverged from large nidoviruses early after they split from small nidoviruses. Together these characteristics identify NDiV as the prototype of a new nidovirus family and a missing link in the transition from small to large nidoviruses.

Indexed as

Biological EvolutionAmino Acid SequenceAnimalsBase SequenceCell LineCloning, MolecularComputational BiologyCulexExonsExoribonucleasesGene Expression Regulation, ViralGenes, ViralGenome SizeMolecular Sequence DataNidoviralesNucleic Acid ConformationExoribonucleasesRNA, Viral

Identifiers

PMID21931546
PMCPMC3169540
OpenAlexW2151368749

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.