Evidence map›Paper›PMID 34725509›Full record

ArticleNature chemical biology2021

Structure-based investigation of fluorogenic Pepper aptamer.

Kaiyi Huang, Xianjun Chen, Chunyan Li, Qianqian Song, Huiwen Li, Linyong Zhu, Yi Yang, Aiming Ren

Abstract read
PubMed Publisher
In one paragraph

Article in Nature chemical biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed
4.2field-weighted citation impact, top 4% 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

48 citing papers in PubMed, 85 citations in OpenAlex.

  1. Review
  2. Nitro Reduction-Based RNA Control and Ultrafast Release.Angewandte Chemie (International ed. in English) · 2026
    Article
  3. Article
  4. Review
  5. Honeydew: A Fluorescent Aptamer for Low-Cost Azo Food Dyes.Chembiochem : a European journal of chemical biology · 2026
    Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Review
  11. Article
  12. Article
  13. Review
  14. Structural basis and affinity improvement for an ATP-binding DNA aptamer.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  15. Article
  16. Article
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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

8 authors at 2 institutions in 1 country.

Kaiyi Huang *Life Sciences Institute, Zhejiang University, Hangzhou, China.
Xianjun Chen *Optogenetics & Synthetic Biology Interdisciplinary Research Center, State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing Technology, East China University of Science and Technology, Shanghai, China.ORCID http://orcid.org/0000-0002-8475-332X
Chunyan LiLife Sciences Institute, Zhejiang University, Hangzhou, China.
Qianqian SongLife Sciences Institute, Zhejiang University, Hangzhou, China.
Huiwen LiOptogenetics & Synthetic Biology Interdisciplinary Research Center, State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing Technology, East China University of Science and Technology, Shanghai, China.
Linyong ZhuOptogenetics & Synthetic Biology Interdisciplinary Research Center, State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing Technology, East China University of Science and Technology, Shanghai, China. linyongzhu@ecust.edu.cn.ORCID http://orcid.org/0000-0002-0398-7213
Yi YangOptogenetics & Synthetic Biology Interdisciplinary Research Center, State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing Technology, East China University of Science and Technology, Shanghai, China. yiyang@ecust.edu.cn.ORCID http://orcid.org/0000-0001-7896-1184
Aiming RenLife Sciences Institute, Zhejiang University, Hangzhou, China. aimingren@zju.edu.cn.ORCID http://orcid.org/0000-0002-5420-4899
East China University of Science and Technology · CNZhejiang University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Pepper fluorescent RNAs are a recently reported bright, stable and multicolor fluorogenic aptamer tag that enable imaging of diverse RNAs in live cells. To investigate the molecular basis of the superior properties of Pepper, we determined the structures of complexes of Pepper aptamer bound with its cognate HBC or HBC-like fluorophores at high resolution by X-ray crystallography. The Pepper aptamer folds in a monomeric non-G-quadruplex tuning-fork-like architecture composed of a helix and one protruded junction region. The near-planar fluorophore molecule intercalates in the middle of the structure and is sandwiched between one non-G-quadruplex base quadruple and one noncanonical G·U wobble helical base pair. In addition, structure-based mutational analysis is evaluated by in vitro and live-cell fluorogenic detection. Taken together, our research provides a structural basis for demystifying the fluorescence activation mechanism of Pepper aptamer and for further improvement of its future application in RNA visualization.

Indexed as

Aptamers, NucleotideBase PairingBase SequenceBinding SitesCrystallography, X-RayFluorescent DyesG-QuadruplexesHEK293 CellsHumansIn Vitro TechniquesMolecular StructureMutationRNAStructure-Activity RelationshipAptamers, NucleotideFluorescent DyesRNA

Identifiers

PMID34725509
OpenAlexW3211077113

What OpenQuestion holds

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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.