Evidence map›Paper›PMID 33730549›Full record

ArticleCell host & microbe2021

Structural insights into viral RNA capping and plasma membrane targeting by Chikungunya virus nonstructural protein 1.

Kuo Zhang, Yee-Song Law, Michelle Cheok Yien Law, Yaw Bia Tan, Melissa Wirawan, Dahai Luo

Open access · bronzeAbstract read
PubMed Publisher
In one paragraph

Article in Cell host & microbe, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
55citing papers in PubMed, 1 pooled it
11.2field-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

55 citing papers in PubMed, 1 synthesis or guideline pooled it, 78 citations in OpenAlex.

  1. Pooled it
  2. The oxidative stress paradigm in arbovirus infections: mechanisms and therapeutic insights.Redox report : communications in free radical research · 2026
    Review
  3. Article
  4. Article
  5. Review
  6. Review
  7. Article
  8. Article
  9. The SMARCA4-TMEM47 axis plays an essential role in chikungunya virus RNA replication.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  10. Article
  11. Article
  12. Review
  13. Review
  14. Review
  15. Review
  16. Article
  17. Article
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  19. Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 1 institution in 2 countries.

Kuo ZhangLee Kong Chian School of Medicine, Nanyang Technological University, EMB 03-07, 59 Nanyang Drive, Singapore 636921, Singapore; NTU Institute of Structural Biology, Nanyang Technological University, EMB 06-01, 59 Nanyang Drive, Singapore 636921, Singapore.
Yee-Song LawLee Kong Chian School of Medicine, Nanyang Technological University, EMB 03-07, 59 Nanyang Drive, Singapore 636921, Singapore; NTU Institute of Structural Biology, Nanyang Technological University, EMB 06-01, 59 Nanyang Drive, Singapore 636921, Singapore.
Michelle Cheok Yien LawLee Kong Chian School of Medicine, Nanyang Technological University, EMB 03-07, 59 Nanyang Drive, Singapore 636921, Singapore; NTU Institute of Structural Biology, Nanyang Technological University, EMB 06-01, 59 Nanyang Drive, Singapore 636921, Singapore.
Yaw Bia TanLee Kong Chian School of Medicine, Nanyang Technological University, EMB 03-07, 59 Nanyang Drive, Singapore 636921, Singapore; NTU Institute of Structural Biology, Nanyang Technological University, EMB 06-01, 59 Nanyang Drive, Singapore 636921, Singapore.
Melissa WirawanLee Kong Chian School of Medicine, Nanyang Technological University, EMB 03-07, 59 Nanyang Drive, Singapore 636921, Singapore; NTU Institute of Structural Biology, Nanyang Technological University, EMB 06-01, 59 Nanyang Drive, Singapore 636921, Singapore.
Dahai LuoLee Kong Chian School of Medicine, Nanyang Technological University, EMB 03-07, 59 Nanyang Drive, Singapore 636921, Singapore; NTU Institute of Structural Biology, Nanyang Technological University, EMB 06-01, 59 Nanyang Drive, Singapore 636921, Singapore; School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551, Singapore. Electronic address: luodahai@ntu.edu.sg.
Nanyang Technological University · SG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Chikungunya virus (CHIKV) causes a debilitating arthralgic inflammatory disease in humans. The multifunctional CHIKV protein, nsP1, facilitates virus RNA replication and transcription by anchoring the viral replication complex (RC) to plasma membrane vesicles and synthesizing the viral RNA 5' cap-0. Here, we report a cryo-EM structure of CHIKV nsP1 at 2.38 Å resolution. Twelve copies of nsP1 form a crown-shaped ring structure with a 7.5-nm-wide channel for mediating communication and exchange between the viral RC and the host cell. The catalytic site for viral RNA capping is located in a tunnel that is shaped by neighboring nsP1 molecules. Two membrane-association loops target nsP1 to the inner leaflet of the plasma membrane via palmitoylation and hydrophobic and electrostatic interactions. Our study provides the structural basis of viral RNA capping and RC assembly mediated by nsP1 and guides the development of antivirals targeting these essential steps of virus infection.

Indexed as

Cell MembraneChikungunya FeverChikungunya virusHumansRNA CapsRNA, ViralViral Nonstructural ProteinsVirus ReplicationRNA CapsRNA, ViralViral Nonstructural ProteinsChikungunya viruscryo-EM structure determinationmembrane associationsnonstructural proteinreplicationRNA cap

Identifiers

PMID33730549
OpenAlexW3136024933

What OpenQuestion holds

Textmetadata
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.