Related Experiment Video
Updated: Jun 24, 2025

07:38
Open-source Single-particle Analysis for Super-resolution Microscopy with VirusMapper
Published on: April 9, 2017
10.1K
Inside the capsid: Revealing viral genome organization through multiscale simulations
1Department of Molecular and Cell Biology, University of Connecticut, Storrs, CT 06269, USA.
Structure (London, England : 1993)
|June 7, 2024
Summary
Researchers used computational modeling to understand how the HK97 virus packages its genome into its capsid. This study reveals new details about genome structures and the packaging mechanism.
Area of Science:
- Virology
- Computational Biology
- Structural Biology
Background:
- The HK97 bacteriophage is a model system for studying viral DNA packaging.
- Understanding genome packaging is crucial for viral assembly and infection mechanisms.
Discussion:
- Coshic et al. utilized a computational multiscale approach to simulate the complete viral genome packaging process.
- The study compares simulation results with existing experimental data, validating the model's accuracy.
Key Insights:
- The computational model accurately predicts the packaging of the complete HK97 viral genome into its capsid.
- New insights into the structural heterogeneity of viral genomes during packaging were uncovered.
- The study elucidates the dynamic mechanism governing viral genome packaging.
Outlook:
- This multiscale modeling approach can be applied to other viral systems.
- Further research can refine the model to explore variations in packaging under different conditions.
Related Concept Videos
Viral Structure
62.1K
Viruses are extraordinarily diverse in shape and size, but they all have several structural features in common. All viruses have a core that contains a DNA- or RNA-based genome. The core is surrounded by a protective coat of proteins called the capsid. The capsid is composed of subunits called capsomeres. The capsid and genome-containing core are together known as the nucleocapsid.
62.1K
Retrovirus Life Cycles
45.8K
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...
45.8K
Viral Recombination
23.4K
Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment.
23.4K
What are Viruses?
114.8K
Overview
114.8K
Retroviruses
12.2K
Retroviruses and retrotransposons both insert copies of their genetic elements into the genome of the host cell. Thus, the viral genes are passed on when the host genome is replicated or translated. A typical retroviral DNA sequence contains 3-4 genes that encode the different proteins required for its structural assembly and function as a molecular parasite. This DNA is transcribed into a single mRNA, which is very similar in structure to conventional mRNAs, i.e., it is capped at the 5’...
12.2K
Viral Mutations
32.2K
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...
32.2K

