Evidence map›Paper›PMID 34087218›Full record

ArticleBiophysical journal2021

Neuropilin-1 assists SARS-CoV-2 infection by stimulating the separation of Spike protein S1 and S2.

Zhen-Lu Li, Matthias Buck

Open access · bronzeAbstract read
In one paragraph

Article in Biophysical journal, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed, 1 pooled it
5.6field-weighted citation impact, top 3% 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

49 citing papers in PubMed, 1 synthesis or guideline pooled it, 64 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Molecular mechanisms of SARS-CoV-2 entry: implications for biomedical strategies.Microbiology and molecular biology reviews : MMBR · 2025
    Review
  6. Article
  7. Review
  8. iPSC-derived human cortical organoids display profound alterations of cellular homeostasis following SARS-CoV-2 infection and Spike protein exposure.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2025
    Article
  9. Article
  10. Review
  11. Article
  12. Review
  13. Review
  14. Article
  15. Article
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  17. Review
  18. Biophysical investigation of interactions between SARS-CoV-2 spike protein and neuropilin-1.Protein science : a publication of the Protein Society · 2023
    Article
  19. Review
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

Zhen-Lu LiDepartment of Physiology and Biophysics, School of Medicine, Cleveland, Ohio.
Matthias BuckDepartment of Physiology and Biophysics, School of Medicine, Cleveland, Ohio; Department of Pharmacology, School of Medicine, Cleveland, Ohio; Department of Neurosciences, School of Medicine, Cleveland, Ohio; Case Comprehensive Cancer Center, Case Western Reserve University, School of Medicine, Cleveland, Ohio. Electronic address: matthias.buck@case.edu.
University School · US

Funding

Structure and function of plexin - co-receptor interactionsR01EY029169 · NEI · CASE WESTERN RESERVE UNIVERSITY · PI BUCK, MATTHIAS · 2018 to 2021
$2.1M
Signaling Biophysics of Protein-GTPase InteractionsR01GM073071 · NIGMS · CASE WESTERN RESERVE UNIVERSITY · PI BUCK, MATTHIAS · 2005 to 2009
$1.4M
Structure-Dynamics Relationships in Proteins: A multi-faceted characterizatiR01GM092851 · NIGMS · CASE WESTERN RESERVE UNIVERSITY · PI BUCK, MATTHIAS · 2010 to 2013
$1.2M
NEI NIH HHS R01 EY029169NIGMS NIH HHS R01 GM073071NIGMS NIH HHS R01 GM092851
6 · The paper itself

Abstract

The cell surface receptor Neuropilin-1 (Nrp1) was recently identified as a host factor for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) entry. The Spike protein of SARS-CoV-2 is cleaved into two segments, the S1 (residues (res.) 1-685) and the S2 (res. 686-1273) domains by furin protease. Nrp1 predominantly binds to the C-terminal RRAR amino acid motif (res. 682-685) of the S1 domain. In this study, we firstly modeled the association of an Nrp1 protein (consisting of domains a2-b1-b2) with the Spike protein. Next, we studied the separation of S2 from the S1 domain, with and without Nrp1 bound, by utilizing molecular dynamics pulling simulations. During the separation, Nrp1 stabilizes the S1 C-terminal region (res. 640-685) and thereby assists the detachment of S2 N-terminal region (res. 686-700). Without Nrp1 bound, S1 tends to become stretched, whereas the bound Nrp1 stimulates an earlier separation of S2 from the S1 domain. The liberated S2 domain is known to mediate the fusion of virus and host membranes; thus, Nrp1 likely increases virus infectivity by facilitating the S1 and S2 separation. We further analyzed the possible topological structure of the SARS-CoV-2 Spike protein when bound with Nrp1 and angiotensin-converting enzyme 2 (ACE2). Understanding of such an Nrp1-assisted viral infection opens the gate for the generation of protein-protein inhibitors, such as antibodies, which could attenuate the infection mechanism and protect certain cells in a future Nrp1-ACE2 targeted combination therapy.

Identifiers

PMID34087218
PMCPMC8169233
OpenAlexW3164413797

What OpenQuestion holds

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Registered trials

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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.