Complete Genome Sequence of Herpes Simplex Virus 2 Strain G
Weizhong Chang1, Xiaoli Jiao1, Hongyan Sui1
1Laboratory of Human Retrovirology and lmmunoinformatics, Frederick National Laboratory for Cancer Research, Frederick, MD 21702, USA.
Viruses
|March 26, 2022
Summary
This study fully sequenced the Herpes simplex virus type 2 (HSV-2) strain G genome using long-read sequencing. The research identified key genomic features and evolutionary relationships, aiding future HSV-2 clinical research and treatment development.
Area of Science:
- Virology
- Genomics
- Molecular Biology
Background:
- Herpes simplex virus type 2 (HSV-2) causes common genital infections and increases HIV risk.
- High GC content and repetitive regions challenge complete HSV-2 genome sequencing.
- Previous sequencing efforts left strain G's genome incomplete.
Purpose of the Study:
- To de novo assemble and annotate the complete genome of HSV-2 strain G.
- To analyze the 'α' sequence and its role in viral DNA processing.
- To visualize HSV-2 genome isomers and compare coding sequences.
Main Methods:
- PacBio long sequencing reads for de novo genome assembly.
- Analysis of the 'α' sequence for replication and packaging signals.
- Oxford Nanopore Technology sequencing for visualizing genome isomers.
- Comparative genomics and phylogenetic analysis.
Main Results:
- Complete de novo assembly and annotation of the HSV-2 strain G genome.
- Identification of packaging signals within the 'α' sequence, homologous to HSV-1.
- Visualization of four HSV-2 genome isomers at the nucleotide level.
- Comparative analysis of coding sequences and phylogenetic relationships.
Conclusions:
- The complete HSV-2 strain G genome sequence provides a valuable resource.
- Understanding the 'α' sequence and genome structure aids in studying viral replication and packaging.
- This comprehensive genomic data supports advancements in HSV-2 clinical research and therapeutic strategies.
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