Evidence map›Paper›PMID 30021898›Full record

ArticleJournal of virology2018

SOSIP Changes Affect Human Immunodeficiency Virus Type 1 Envelope Glycoprotein Conformation and CD4 Engagement.

Nirmin Alsahafi, Sai Priya Anand, Luis Castillo-Menendez, Myriam Maude Verly, Halima Medjahed, Jérémie Prévost, Alon Herschhorn, Jonathan Richard, Arne Schön, Bruno Melillo and 4 more

Abstract read
In one paragraph

Article in Journal of virology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing 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

33 citing papers in PubMed.

  1. Article
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  7. Incompletely closed HIV-1Npj viruses · 2025
    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

14 authors.

Nirmin AlsahafiCentre de Recherche du CHUM, Montreal, Quebec, Canada.
Sai Priya AnandCentre de Recherche du CHUM, Montreal, Quebec, Canada.
Luis Castillo-MenendezDepartment of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Department of Microbiology, Harvard Medical School, Boston, Massachusetts, USA.
Myriam Maude VerlyCentre de Recherche du CHUM, Montreal, Quebec, Canada.
Halima MedjahedCentre de Recherche du CHUM, Montreal, Quebec, Canada.
Jérémie PrévostCentre de Recherche du CHUM, Montreal, Quebec, Canada.
Alon HerschhornDivision of Infectious Diseases and International Medicine, Department of Medicine, University of Minnesota, Minneapolis, Minnesota, USA.
Jonathan RichardCentre de Recherche du CHUM, Montreal, Quebec, Canada.
Arne SchönDepartment of Biology, The Johns Hopkins University, Baltimore, Maryland, USA.
Bruno MelilloDepartment of Chemistry, School of Arts and Sciences, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
Ernesto FreireDepartment of Biology, The Johns Hopkins University, Baltimore, Maryland, USA.
Amos B SmithDepartment of Chemistry, School of Arts and Sciences, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
Joseph SodroskiDepartment of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Department of Microbiology, Harvard Medical School, Boston, Massachusetts, USA.
Andrés FinziCentre de Recherche du CHUM, Montreal, Quebec, Canada andres.finzi@umontreal.ca.

Funding

Virus biology scientific research support componentUM1AI100645 · NIAID · DUKE UNIVERSITY · PI MCMICHAEL, ANDREW JAMES · 2012 to 2018
$204.7M
Understanding Envelope Function in HIV-1 Infection: The Design, Synthesis and Validation of Small Molecule HIV-1 Env InhibitorsP01GM056550 · NIGMS · UNIVERSITY OF PENNSYLVANIA · PI ABRAMS, CAMERON F · 1997 to 2018
$31.2M
Conformational Landscape of the HIV-1 Envelope GlycoproteinsR01AI124982 · NIAID · DANA-FARBER CANCER INST · PI SODROSKI, JOSEPH G · 2016 to 2025
$6.7M
Unlocking Envelope: A New Strategy for a Functional Cure Through Antibody-Dependent Cell-Mediated CytotoxicityR01AI129769 · NIAID · UNIVERSITY OF MARYLAND BALTIMORE · PI PAZGIER, MARZENA ELZBIETA · 2017 to 2021
$2.3M
NIAID NIH HHS R01 AI124982NIAID NIH HHS R01 AI129769NIAID NIH HHS UM1 AI100645NIGMS NIH HHS P01 GM056550
6 · The paper itself

Abstract

The entry of human immunodeficiency virus into host cells is mediated by the envelope glycoprotein (Env) trimeric spike, which consists of three exterior gp120 subunits and three transmembrane gp41 subunits. The trimeric Env undergoes extensive conformational rearrangement upon interaction with the CD4 receptor, transitioning from the unliganded, "closed" State 1 to more-open downstream State 2 and State 3 conformations. Changes in "restraining" amino acid residues, such as leucine 193 and isoleucine 423, destabilize State 1 Env, which then assumes entry-competent, downstream conformations. The introduction of an artificial disulfide bond linking the gp120 and gp41 subunits (SOS) in combination with the I559P (IP) change has allowed structural characterization of soluble gp140 (sgp140) trimers. The conformation of these SOSIP-stabilized sgp140 trimers has been suggested to represent the closed native State 1 conformation. Here we compare the impact on the membrane Env conformation of the SOSIP changes with that of the well-characterized changes (L193R and I423A) that shift Env to downstream States 2 and 3. The results presented here suggest that the SOSIP changes stabilize Env in a conformation that differs from State 1 but also from the downstream Env conformations stabilized by L193R or I423A.

Indexed as

CD4 Antigensenv Gene Products, Human Immunodeficiency VirusHEK293 CellsHIV-1HIV Envelope Protein gp120HIV Envelope Protein gp41HIV InfectionsHumansMutagenesis, Site-DirectedMutationProtein ConformationProtein MultimerizationCD4 Antigensenv Gene Products, Human Immunodeficiency Virusgp140 envelope protein, Human immunodeficiency virus 1HIV Envelope Protein gp120HIV Envelope Protein gp41EnvEnv conformationHIV-1SOSIPState 1States 2/3

Identifiers

PMID30021898
PMCPMC6146791

What OpenQuestion holds

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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.