Triple coding in human SRD5A1 mRNA
Author Information
Author(s): Yordanova Martina M., Slattery Conor, Baranova-Gurvich Mirriam, Engels Manon, Ting Oscar, Świrski Michał, Tierney Jack A. S., Tjeldnes Håkon, Mudge Jonathan, Loughran Gary, Andreev Dmitry E., Baranov Pavel V.
Primary Institution: University College Cork
Hypothesis
What are the benefits of encoding proteins in alternative frames of the same RNA molecule?
Conclusion
The study highlights the importance of identifying and characterizing productive RNA translation, regardless of the presumed biological roles of the products.
Supporting Evidence
- The study reports simultaneous translation of mRNA transcripts derived from the SRD5A1 locus in all three reading frames.
- Ribosome profiling data indicate that the most efficient translation produces catalytically inactive proteoforms.
- Phylogenetic analysis suggests that the long triple decoding region is specific to primates.
Takeaway
This study found that one piece of RNA can make three different proteins at the same time, which is like having three different toys made from the same box of building blocks.
Methodology
The study used ribosome profiling data and gene expression assays to analyze the translation of SRD5A1 mRNA in different cellular environments.
Limitations
The biological significance of the non-catalytic proteoforms remains unclear.
Digital Object Identifier (DOI)
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