Evidence map›Paper›PMID 30587764›Full record

ArticlePathogens (Basel, Switzerland)2018

Identification of Residues in Lassa Virus Glycoprotein Subunit 2 That Are Critical for Protein Function.

Katherine A Willard, Jacob T Alston, Marissa Acciani, Melinda A Brindley

Open access · goldAbstract read
In one paragraph

Article in Pathogens (Basel, Switzerland), 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
9.7field-weighted citation impact, top 1% 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

15 citing papers in PubMed, 80 citations in OpenAlex.

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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

4 authors at 1 institution in 1 country.

Katherine A WillardDepartment of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA. kwillard@uga.edu.ORCID 0000-0002-0044-2664
Jacob T AlstonDepartment of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA. jacob.t.alston@gmail.com.
Marissa AccianiDepartment of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA. marissa.acciani@uga.edu.
Melinda A BrindleyDepartment of Infectious Diseases, Department of Population Health, Center for Vaccines and Immunology, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA. mbrindle@uga.edu.ORCID 0000-0002-4929-8085
University of Georgia · US

Funding

Characterization of the arenavirus glycoprotein complex and mechanism of fusionK22AI104800 · NIAID · UNIVERSITY OF GEORGIA · PI BRINDLEY, MELINDA ANN · 2015 to 2016
$269k
National Institutes of Health AI104800NIAID NIH HHS K22 AI104800
6 · The paper itself

Abstract

Lassa virus (LASV) is an Old World arenavirus, endemic to West Africa, capable of causing hemorrhagic fever. Currently, there are no approved vaccines or effective antivirals for LASV. However, thorough understanding of the LASV glycoprotein and entry into host cells could accelerate therapeutic design. LASV entry is a two-step process involving the viral glycoprotein (GP). First, the GP subunit 1 (GP1) binds to the cell surface receptor and the viral particle is engulfed into an endosome. Next, the drop in pH triggers GP rearrangements, which ultimately leads to the GP subunit 2 (GP2) forming a six-helix-bundle (6HB). The process of GP2 forming 6HB fuses the lysosomal membrane with the LASV envelope, allowing the LASV genome to enter the host cell. The aim of this study was to identify residues in GP2 that are crucial for LASV entry. To achieve this, we performed alanine scanning mutagenesis on GP2 residues. We tested these mutant GPs for efficient GP1-GP2 cleavage, cell-to-cell membrane fusion, and transduction into cells expressing α-dystroglycan and secondary LASV receptors. In total, we identified seven GP2 mutants that were cleaved efficiently but were unable to effectively transduce cells: GP-L280A, GP-L285A/I286A, GP-I323A, GP-L394A, GP-I403A, GP-L415A, and GP-R422A. Therefore, the data suggest these residues are critical for GP2 function in LASV entry.

Indexed as

arenavirusfusion proteinLassa virusviral entryviral fusionviral glycoprotein

Identifiers

PMID30587764
PMCPMC6471855
OpenAlexW2906512614

What OpenQuestion holds

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LicenceCC BY
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.