Related Experiment Video
Updated: Feb 23, 2026
14:23
A Restriction Enzyme Based Cloning Method to Assess the In vitro Replication Capacity of HIV-1 Subtype C Gag-MJ4 Chimeric Viruses
Published on: August 31, 2014
16.2K
HIV-1 mutates to adapt in fluxing environments
Masako Nomaguchi1, Naoya Doi1, Takaaki Koma1
1Department of Microbiology, Tokushima University Graduate School of Medical Science, Tokushima 770-8503, Japan.
Microbes and Infection
|September 2, 2017
Summary
Human immunodeficiency virus type 1 (HIV-1) exhibits remarkable adaptability. This review highlights experimental evidence of HIV-1's rapid mutation and genome alteration in response to environmental pressures, showcasing its survival strategies.
Area of Science:
- Virology
- Molecular Biology
- Immunology
Background:
- Human immunodeficiency virus type 1 (HIV-1) demonstrates specialized adaptations for human replication, persistence, and transmission.
- The virus's ability to survive within the human host is a key characteristic.
- Understanding these adaptations is crucial for developing effective treatments and prevention strategies.
Purpose of the Study:
- To review experimental evidence detailing the adaptive capabilities of HIV-1.
- To elucidate the mechanisms behind HIV-1's genetic mutability.
- To highlight the virus's dynamic response to environmental pressures.
Main Methods:
- This review synthesizes findings from various experimental studies.
- Focus is placed on documented instances of HIV-1 genome sequence alterations.
- Evidence demonstrating the virus's response to selective pressures is analyzed.
Main Results:
- HIV-1 exhibits significant genetic mutability.
- The virus actively alters its genome sequences in response to diverse environmental pressures.
- Experimental data confirms HIV-1's capacity for rapid adaptation.
Conclusions:
- HIV-1 possesses a "phantasmagoric" property, characterized by its extreme adaptability and mutability.
- These adaptive traits are central to HIV-1's replication, persistence, and survival in humans.
- Further research into these mechanisms can inform therapeutic interventions.
Related Concept Videos
00:36Viral Mutations
40.0K
A mutation is a change in the sequence of bases of DNA or RNA in a genome. Some mutations occur during replication of the genome due to errors made by the polymerase enzymes that replicate DNA or RNA. Unlike DNA polymerase, RNA polymerase is prone to errors because it is not capable of “proofreading” its work. Viruses with RNA-based genomes, like HIV, therefore accrue mutations faster than viruses with DNA-based genomes. Because mutation and recombination provide the raw material...
40.0K
01:18Mutations in Microorganisms
841
Mutations are heritable changes in an organism’s genome involving alterations in the base sequence of DNA or RNA. These changes can influence cellular processes and phenotypic traits, potentially transforming the unaltered wild type into a mutant form. Such changes, termed forward mutations, are pivotal in shaping the genetic diversity of organisms.RNA viruses exhibit the highest mutation rates due to the absence of robust proofreading mechanisms during genome replication. In contrast,...
841
01:26Size and Structure of Viral Genomes
888
Viral genomes exhibit remarkable diversity in size, structure, and composition, influencing their replication strategies and interactions with host cells. These genomes consist of either DNA or RNA and may be linear or circular. Additionally, they can be single-stranded or double-stranded, with each configuration affecting how the virus propagates within a host. RNA viruses, for instance, generally have smaller genomes than DNA viruses, a factor that contributes to their high mutation rates and...
888
01:20Mismatch Repair
6.8K
Organisms are capable of detecting and fixing nucleotide mismatches that occur during DNA replication. This sophisticated process requires identifying the new strand and replacing the erroneous bases with correct nucleotides. Mismatch repair is coordinated by many proteins in both prokaryotes and eukaryotes.
The Mutator Protein Family Plays a Key Role in DNA Mismatch Repair
The human genome has more than 3 billion base pairs of DNA per cell. Prior to cell division, that vast amount of genetic...
The Mutator Protein Family Plays a Key Role in DNA Mismatch Repair
The human genome has more than 3 billion base pairs of DNA per cell. Prior to cell division, that vast amount of genetic...
6.8K
01:36Mismatch Repair
44.0K
Overview
44.0K
01:10Retrovirus Life Cycles
49.9K
Retroviruses have a single-stranded RNA genome that undergoes a special form of replication. Once the retrovirus has entered the host cell, an enzyme called reverse transcriptase synthesizes double-stranded DNA from the retroviral RNA genome. This DNA copy of the genome is then integrated into the host’s genome inside the nucleus via an enzyme called integrase. Consequently, the retroviral genome is transcribed into RNA whenever the host’s genome is transcribed, allowing the...
49.9K