Evidence map›Paper›PMID 24516589›Full record

ArticlePloS one2014

New findings in cleavage sites variability across groups, subtypes and recombinants of human immunodeficiency virus type 1.

Esther Torrecilla, Teresa Llácer Delicado, África Holguín

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
0.6field-weighted citation impact, top 35% 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

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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

7 citing papers in PubMed, 10 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

3 authors at 1 institution in 1 country.

Esther TorrecillaHIV-1 Molecular Epidemiology Laboratory, Dept. of Microbiology, Hospital Ramón y Cajal- IRYCIS and CIBERESP, Madrid, Spain.
Teresa Llácer DelicadoHIV-1 Molecular Epidemiology Laboratory, Dept. of Microbiology, Hospital Ramón y Cajal- IRYCIS and CIBERESP, Madrid, Spain.
África HolguínHIV-1 Molecular Epidemiology Laboratory, Dept. of Microbiology, Hospital Ramón y Cajal- IRYCIS and CIBERESP, Madrid, Spain.
Instituto Ramón y Cajal de Investigación Sanitaria · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPolymorphisms at cleavage sites (CS) can influence Gag and Pol proteins processing by the viral protease (PR), restore viral fitness and influence the virological outcome of specific antiretroviral drugs. However, data of HIV-1 variant-associated CS variability is scarce.

methodsIn this descriptive research, we examine the effect of HIV-1 variants on CS conservation using all 9,028 gag and 3,906 pol HIV-1 sequences deposited in GenBank, focusing on the 110 residues (10 per site) involved at 11 CS: P17/P24, P24/P2, P2/P7, P7/P1, P1/P6 (gag) , NC/TFP, TFP/P6 (pol), P6 (pol) /PR, PR/RT(p51), RT(p51)/RT(p66) and RT(p66)/IN. CS consensus amino acid sequences across HIV-1 groups (M, O, N, P), group M 9 subtypes and 51 circulating recombinant forms (CRF) were inferred from our alignments and compared to the HIV-1 consensus-of-consensuses sequence provided by GenBank.

resultsIn all HIV-1 variants, the most conserved CS were PR/RT(p51), RT(p51)/RT(p66), P24/P2 and RT(p66)/IN and the least P2/P7 and P6 (pol) /PR. Conservation was significantly lower in subtypes vs. recombinants in P2/P7 and TFP/P6 (pol) and higher in P17/P24. We found a significantly higher conservation rate among Group M vs. non-M Groups HIV-1. The late processing sites at Gag (P7/P1) and GagPol precursors (PR/RT(p51)) presented a significantly higher conservation vs. the first CS (P2/P7) in the 4 HIV-1 groups. Here we show 52 highly conserved residues across HIV-1 variants in 11 CS and the amino acid consensus sequence in each HIV-1 group and HIV-1 group M variant for each 11 CS.

conclusionsThis is the first study to describe the CS conservation level across all HIV-1 variants and 11 sites in one of the largest available sequence HIV-1 dataset. These results could help other researchers for the future design of both novel antiretroviral agents acting as maturation inhibitors as well as for vaccine targeting CS.

Indexed as

DNA CleavagePolymorphism, GeneticConsensus SequenceHIV-1HumansViral ProteinsViral Proteins

Identifiers

PMID24516589
PMCPMC3917854
OpenAlexW2013754211

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.