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Bacterial Artificial Chromosomes: A Functional Genomics Tool for the Study of Positive-strand RNA Viruses
Published on: December 29, 2015
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Viral Short ORFs and Their Possible Functions.
Yaara Finkel1, Noam Stern-Ginossar1, Michal Schwartz1
1Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel.
Proteomics
|November 19, 2017
Summary
Researchers are uncovering the functions of short open reading frames (sORFs), small protein-coding sequences. Studies reveal these sORFs, particularly in viruses, play diverse roles and are more common than previously thought.
Area of Science:
- Genomics
- Molecular Biology
- Virology
Background:
- Traditionally, short open reading frames (sORFs) were overlooked due to technical limitations.
- Recent advancements show sORF translation is widespread and functionally significant across organisms.
Purpose of the Study:
- To investigate the prevalence and potential function of translated sORFs in DNA viruses.
- To explore the role of viral sORFs in host-pathogen interactions and immune responses.
Main Methods:
- Utilized ribosome profiling to identify translated sequences genome-wide.
- Applied computational analyses to detect features suggesting functionality in viral sORFs.
- Leveraged mass spectrometry for annotation of translated sORFs.
Main Results:
- Ribosome profiling revealed numerous previously unidentified translation events from sORFs.
- Computational analysis indicated specific features enriching functional viral sORFs.
- Evidence suggests a significant, yet largely uncharacterized, repertoire of functional viral sORFs exists.
Conclusions:
- sORFs represent an important, underappreciated class of functional genomic elements, especially in viruses.
- Further research combining genome editing and synthetic tagging is crucial to elucidate viral sORF functions.
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