Evidence map›Paper›PMID 33667651›Full record

ArticleProtein expression and purification2021

Expression of SARS-CoV-2 surface glycoprotein fragment 319-640 in E. coli, and its refolding and purification.

Gabriel A Fitzgerald, Andrei Komarov, Anna Kaznadzey, Ilya Mazo, Maria L Kireeva

Open access · greenAbstract read
In one paragraph

Article in Protein expression and purification, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.1field-weighted citation impact, top 10% 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

22 citing papers in PubMed, 39 citations in OpenAlex.

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  7. RecombinantVeterinary world · 2023
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  14. A magnetic bead immunoassay to detect high affinity human IgG reactive to SARS-CoV-2 Spike S1 RBD produced in Escherichia coli.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2022
    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

5 authors at 3 institutions in 3 countries.

Gabriel A FitzgeraldVirIntel, LLC, Frederick, MD, USA.
Andrei KomarovVirIntel, LLC, Frederick, MD, USA.
Anna KaznadzeyVirIntel, LLC, Frederick, MD, USA; A. A. Kharkevich Institute for Information Transmission Problems, Russian Academy of Sciences, Moscow, Russia.
Ilya MazoVirIntel, LLC, Frederick, MD, USA; Argentys Informatics, LLC, Gaithersburg, MD, USA.
Maria L KireevaVirIntel, LLC, Frederick, MD, USA. Electronic address: maria.kireeva@virintel.com.
Department of Virology · FRID Genomics (United States) · USInstitute for Information Transmission Problems · RU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Sensitive and specific serology tests are essential for epidemiological and public health studies of COVID-19 and for vaccine efficacy testing. The presence of antibodies to SARS-CoV-2 surface glycoprotein (Spike) and, specifically, its receptor-binding domain (RBD) correlates with inhibition of SARS-CoV-2 binding to the cellular receptor and viral entry into the cells. Serology tests that detect antibodies targeting RBD have high potential to predict COVID-19 immunity and to accurately determine the extent of the vaccine-induced immune response. Cost-effective methods of expression and purification of Spike and its fragments that preserve antigenic properties are essential for development of such tests. Here we describe a method of production of His6-tagged S319-640 fragment containing RBD in E. coli. It includes expression of the fragment, solubilization of inclusion bodies, and on-the-column refolding. The antigenic properties of the resulting product are similar, but not identical to the RBD-containing fragment expressed in human cells.

Indexed as

Binding SitesCloning, MolecularCOVID-19Escherichia coliGene ExpressionHumansPeptide FragmentsProtein DomainsProtein RefoldingSARS-CoV-2SolubilitySpike Glycoprotein, CoronavirusPeptide FragmentsSpike Glycoprotein, Coronavirusspike protein, SARS-CoV-2Antibody testAntigenBacterial expressionCOVID-19Receptor-binding domainSpike

Identifiers

PMID33667651
PMCPMC7923943
OpenAlexW3133516577

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.