Evidence map›Paper›PMID 33932324›Full record

ArticleStructure (London, England : 1993)2021

Conformational flexibility and structural variability of SARS-CoV2 S protein.

Ishika Pramanick, Nayanika Sengupta, Suman Mishra, Suman Pandey, Nidhi Girish, Alakta Das, Somnath Dutta

Abstract read
In one paragraph

Article in Structure (London, England : 1993), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
–field-weighted citation impact
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

23 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Molecular dynamics studies reveal structural and functional features of the SARS-CoV-2 spike protein.BioEssays : news and reviews in molecular, cellular and developmental biology · 2022
    Review
  15. Science advances · 2022
    Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Review
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

7 authors.

Ishika PramanickMolecular Biophysics Unit, Indian Institute of Science, Bangalore 560012, India.
Nayanika SenguptaMolecular Biophysics Unit, Indian Institute of Science, Bangalore 560012, India.
Suman MishraMolecular Biophysics Unit, Indian Institute of Science, Bangalore 560012, India.
Suman PandeyMynvax Private Limited, ES12, Entrepreneurship Centre, SID, Indian Institute of Science, Bengaluru, India.
Nidhi GirishMynvax Private Limited, ES12, Entrepreneurship Centre, SID, Indian Institute of Science, Bengaluru, India.
Alakta DasMolecular Biophysics Unit, Indian Institute of Science, Bangalore 560012, India.
Somnath DuttaMolecular Biophysics Unit, Indian Institute of Science, Bangalore 560012, India. Electronic address: somnath@iisc.ac.in.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Spike (S) glycoprotein of SARS-CoV2 exists chiefly in two conformations, open and closed. Most previous structural studies on S protein have been conducted at pH 8.0, but knowledge of the conformational propensities under both physiological and endosomal pH conditions is important to inform vaccine development. Our current study employed single-particle cryoelectron microscopy to visualize multiple states of open and closed conformations of S protein at physiological pH 7.4 and near-physiological pH 6.5 and pH 8.0. Propensities of open and closed conformations were found to differ with pH changes, whereby around 68% of S protein exists in open conformation at pH 7.4. Furthermore, we noticed a continuous movement in the N-terminal domain, receptor-binding domain (RBD), S2 domain, and stalk domain of S protein conformations at various pH values. Several key residues involving RBD-neutralizing epitopes are differentially exposed in each conformation. This study will assist in developing novel therapeutic measures against SARS-CoV2.

Indexed as

Cryoelectron MicroscopyHumansHydrogen-Ion ConcentrationModels, MolecularProtein BindingProtein ConformationProtein DomainsSARS-CoV-2Single Molecule ImagingSpike Glycoprotein, CoronavirusSpike Glycoprotein, Coronavirusspike protein, SARS-CoV-23D reconstructioncryo-EMnegative stainingpH-dependentS-headsingle particlesolvent accessibilityspike homotrimerstalk domainTEM

Identifiers

PMID33932324
PMCPMC8086150

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.