Evidence map›Paper›PMID 41993386›Full record

ArticlebioRxiv : the preprint server for biology2026

Structural Basis of Polypurine Track Strand Displacement by HIV-1 Reverse Transcriptase.

Xin Wen, Rachel Lee, Sri Dhanya Muppalla, William M McFadden, Karen A Kirby, Robert A Dick, Stefan G Sarafianos

Abstract readPreprint
In one paragraph

Article in bioRxiv : the preprint server for biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

7 authors.

Xin WenCenter for ViroScience and Cure, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA.ORCID 0000-0003-4762-7567
Rachel LeeCenter for ViroScience and Cure, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA.ORCID 0000-0002-5190-614X
Sri Dhanya MuppallaSchool of Biological Sciences, Georgia Institute of Technology, Atlanta, GA.ORCID 0009-0009-6697-4637
William M McFaddenCenter for ViroScience and Cure, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA.ORCID 0000-0001-6911-2172
Karen A KirbyCenter for ViroScience and Cure, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA.ORCID 0000-0003-2468-4796
Robert A DickCenter for ViroScience and Cure, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA.ORCID 0000-0003-3693-2531
Stefan G SarafianosCenter for ViroScience and Cure, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA.ORCID 0000-0002-5840-154X

Funding

Atlanta Clinical and Translational Science Institute (ACTSI) RenewalUL1TR000454 · NCATS · EMORY UNIVERSITY · PI STEPHENS, DAVID S · 2012 to 2016
$25.8M
Ultrapotent Inhibitors of Wild-type and Multi-drug Resistant HIVR37AI076119 · NIAID · EMORY UNIVERSITY · PI Stefan G Sarafianos · 2020 to 2026
$3.6M
Training Program in Biochemistry, Cell and Molecular BiologyT32GM135060 · NIGMS · EMORY UNIVERSITY · PI Lawrence H. Boise, ANITA H. CORBETT · 2020 to 2026
$2.8M
Structural and Biochemical Effects of Capsid-targeting Molecules on HIV-1 Capsid AssemblyF31AI174951 · NIAID · EMORY UNIVERSITY · PI WILLIAM MICHAEL MCFADDEN · 2023 to 2026
$196k
Characterization of JT-4-173, a Potent Antiviral that Inhibits HIV-1 by a Novel Mechanism of ActionF31AI179424 · NIAID · EMORY UNIVERSITY · PI Xin Wen · 2023 to 2026
$196k
NCATS NIH HHS UL1 TR000454NIAID NIH HHS F31 AI174951NIAID NIH HHS F31 AI179424NIAID NIH HHS R37 AI076119NIGMS NIH HHS T32 GM135060
6 · The paper itself

Abstract

To complete reverse transcription, HIV-1 reverse transcriptase (RT) must displace the RNase H-resistant polypurine tract (PPT) primers. This enables synthesis of the long terminal repeats and formation of the central cDNA flap. However, the molecular mechanism of this PPT strand displacement (SD) has remained unknown, and no structural data exist on how a retroviral polymerase execute these reactions. We report the first cryo-EM structures of HIV-1 RT bound to nucleic acid substrates containing either a PPT

Identifiers

PMID41993386
PMCPMC13082151

What OpenQuestion holds

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Registered trials

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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.