Evidence map›Paper›PMID 22993165›Full record

ArticleJournal of virology2012

Molecular mechanism of antagonism between the Y181C and E138K mutations in HIV-1 reverse transcriptase.

Hong-Tao Xu, Maureen Oliveira, Eugene L Asahchop, Matthew McCallum, Peter K Quashie, Yingshan Han, Yudong Quan, Mark A Wainberg

Open access · bronzeAbstract read
In one paragraph

Article in Journal of virology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
2.2field-weighted citation impact, top 12% 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

13 citing papers in PubMed, 23 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

8 authors at 2 institutions in 1 country.

Hong-Tao XuMcGill University AIDS Centre, Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Quebec, Canada.
Maureen Oliveira
Eugene L Asahchop
Matthew McCallum
Peter K Quashie
Yingshan Han
Yudong Quan
Mark A Wainberg
Jewish General Hospital · CAMcGill University · CA

Funding

Canadian Institutes of Health Research
6 · The paper itself

Abstract

Etravirine (ETR) is an expanded-spectrum nonnucleoside reverse transcriptase inhibitor (NNRTI) approved for use as an antiretroviral agent in treatment-experienced patients. Y181C and E138K in HIV-1 RT are among 20 different drug resistance mutations associated with ETR. However, E138K can be consistently selected by ETR when wild-type viruses but not viruses containing Y181C are grown in tissue culture. This study was carried out to evaluate any possible mechanisms that might explain antagonism between the Y181C and E138K mutations. Accordingly, we performed tissue culture studies to investigate the evolutionary dynamics of E138K in both a wild-type (WT) and a Y181C background. We also generated recombinant enzymes containing Y181C and E138K alone or in combination in order to study enzyme processivity, rates of processive DNA synthesis, enzyme kinetics, and susceptibility to ETR. We now show that the presence of the Y181C mutation prevented the emergence of E138K in cell culture and that the simultaneous presence of E138K and Y181C impaired each of enzyme activity, processivity, rate of processive DNA synthesis, and deoxynucleoside triphosphate (dNTP) affinity. The addition of E138K to Y181C also decreased the level of resistance to ETR compared to that obtained with Y181C alone.

Indexed as

Anti-HIV AgentsChromatography, AffinityDrug Resistance, ViralElectrophoresis, Polyacrylamide GelEscherichia coliHIV-1HIV Reverse TranscriptaseKineticsMutation, MissenseNitrilesPyridazinesPyrimidinesRecombinant ProteinsAnti-HIV AgentsetravirineHIV Reverse TranscriptaseNitrilesPyridazinesPyrimidinesRecombinant Proteinsreverse transcriptase, Human immunodeficiency virus 1

Identifiers

PMID22993165
PMCPMC3497622
OpenAlexW2123853362

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.