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Virology. 2015 Oct;484:334-40. doi: 10.1016/j.virol.2015.06.025. Epub 2015 Jul 9.

High recombination potential of subtype A HIV-1.

Author information

1
HIV Dynamics and Replication Program, National Cancer Institute, Frederick, MD 21702, USA.
2
AIDS and Cancer Virus Program, Frederick National Laboratory for Cancer Research, Frederick, MD 21702, USA.
3
Data Management Services, National Cancer Institute at Frederick, Frederick, MD 21702, USA.
4
Institute of Immunology, Kashirskoe shosse 24-2, Moscow 115478, Russia.
5
HIV Dynamics and Replication Program, National Cancer Institute, Frederick, MD 21702, USA. Electronic address: Wei-Shau.Hu@nih.gov.

Abstract

Recombination can assort polymorphic alleles to increase diversity in the HIV-1 population. To better understand the recombination potential of subtype A HIV-1, we generated viruses containing sequences from two variants circulating in Russia and analyzed the polymerase gene (pol) of the recombinants after one round of HIV-1 replication using single-genome sequencing. We observed that recombination occurred throughout pol and could easily assort alleles containing mutations that conferred resistance to currently approved antivirals. We measured the recombination rate in various regions of pol including a G-rich region that has been previously proposed to be a recombination hot spot. Our study does not support a recombination hot spot in this G-rich region. Importantly, of the 58 proviral sequences containing crossover event(s) in pol, we found that each sequence was a unique genotype indicating that recombination is a powerful genetic mechanism in assorting the genomes of subtype A HIV-1 variants.

KEYWORDS:

HIV-1; Recombination; Subtype A

PMID:
26164392
PMCID:
PMC6258064
DOI:
10.1016/j.virol.2015.06.025
[Indexed for MEDLINE]
Free PMC Article

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