Evidence map›Paper›PMID 32768580›Full record

ArticleLife sciences2020

Structural analysis of ACE2 variant N720D demonstrates a higher binding affinity to TMPRSS2.

Anwar Mohammad, Sulaiman K Marafie, Eman Alshawaf, Mohamed Abu-Farha, Jehad Abubaker, Fahd Al-Mulla

Open access · hybridAbstract read
In one paragraph

Article in Life sciences, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
4.2field-weighted citation impact, top 5% 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

18 citing papers in PubMed, 31 citations in OpenAlex.

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  10. SARS-CoV-2 Susceptibility andFrontiers in genetics · 2022
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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

6 authors at 1 institution in 1 country.

Anwar MohammadDepartment of Biochemistry and Molecular Biology, Dasman Diabetes Institute, Kuwait. Electronic address: anwar.mohammad@dasmaninstitute.org.
Sulaiman K MarafieDepartment of Biochemistry and Molecular Biology, Dasman Diabetes Institute, Kuwait.
Eman AlshawafDepartment of Biochemistry and Molecular Biology, Dasman Diabetes Institute, Kuwait.
Mohamed Abu-FarhaDepartment of Biochemistry and Molecular Biology, Dasman Diabetes Institute, Kuwait.
Jehad AbubakerDepartment of Biochemistry and Molecular Biology, Dasman Diabetes Institute, Kuwait.
Fahd Al-MullaDepartment of Genetics and Bioinformatics, Dasman Diabetes Institute, Kuwait. Electronic address: fahd.almulla@dasmaninstitute.org.
Dasman Diabetes Institute · KW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimsSevere acute respiratory syndrome coronavirus 2 (SARS-CoV-2), a novel member of the betacoronaviruses family affecting the lower respiratory tract mainly through binding to angiotensin converting enzyme 2 (ACE2) via its S-protein. Genetic analysis of (ACE2) gene revealed several variants that have been suggested to regulate the interaction with S protein. This study investigates the N720D variant, positioned in the collectrin-like domain (CLD) at proximity to type II transmembrane serine protease (TMPRSS2) cleavage site. MAIN

methodsThe effect of N720D variant on ACE2 structure and thermodynamic stability was studied by DynaMut. HDOCK was utilised to model TMPRSS2 protease binding to ACE2 WT and D720 variant cleavage site. PRODIGY was used to calculate binding affinities and MD simulation tools calculated the at 100 ns for ACE2 apo structure and the ACE2-TMPRSS2 complex. KEY

findingsThe N720D variant is a more dynamic structure with a free energy change (ΔΔG): -0.470 kcal/mol. As such, introducing a tighter binding affinity of K SIGNIFICANCE: The hotspot N720D variant in the CLD of ACE2 affected the stability and flexibility of ACE2 by increasing the level of motion in the loop region, resulting in a more favourable site for TMPRSS2 binding and cleavage. Consequently, this would facilitate S-protein binding and can potentially increase viral entry highlighting the importance of variants affecting the ACE2-TMPRSS2 complex.

Indexed as

Angiotensin-Converting Enzyme 2BetacoronavirusCoronavirus InfectionsCOVID-19HumansLungMolecular Docking SimulationMolecular Dynamics SimulationPandemicsPeptidyl-Dipeptidase APneumonia, ViralPolymorphism, Single NucleotideProtein BindingSARS-CoV-2Serine EndopeptidasesThermodynamicsACE2 protein, humanAngiotensin-Converting Enzyme 2Peptidyl-Dipeptidase ASerine EndopeptidasesTMPRSS2 protein, humanACE2BindingMolecular dynamic simulationsSARS-CoV-2S-proteinThermodynamic stabilityTMPRSS2

Identifiers

PMID32768580
PMCPMC7405906
OpenAlexW3047623672

What OpenQuestion holds

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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.