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Genomic Analysis of Amphioxus Reveals a Wide Range of Fragments Homologous to Viral Sequences
- Source :
- Viruses, Vol 15, Iss 4, p 909 (2023)
- Publication Year :
- 2023
- Publisher :
- MDPI AG, 2023.
-
Abstract
- Amphioxus species are considered living fossils and are important in the evolutionary study of chordates and vertebrates. To explore viral homologous sequences, a high-quality annotated genome of the Beihai amphioxus (Branchiostoma belcheri beihai) was examined using virus sequence queries. In this study, 347 homologous fragments (HFs) of viruses were identified in the genome of B. belcheri beihai, of which most were observed on 21 genome assembly scaffolds. HFs were preferentially located within protein-coding genes, particularly in their CDS regions and promoters. A range of amphioxus genes with a high frequency of HFs is proposed, including histone-related genes that are homologous to the Histone or Histone H2B domains of viruses. Together, this comprehensive analysis of viral HFs provides insights into the neglected role of viral integration in the evolution of amphioxus.
- Subjects :
- amphioxus
virus
homologous fragment
evolution
Microbiology
QR1-502
Subjects
Details
- Language :
- English
- ISSN :
- 15040909 and 19994915
- Volume :
- 15
- Issue :
- 4
- Database :
- Directory of Open Access Journals
- Journal :
- Viruses
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.54aca9cb912a4fc58fe0695669b2a77c
- Document Type :
- article
- Full Text :
- https://doi.org/10.3390/v15040909