Sequence and structural evolution of the KsgA/Dim1 methyltransferase family
2008
Evolution of KsgA/Dim1 Methyltransferase Family
publication
Evidence: moderate
Author Information
Author(s): Heather C O'Farrell, Zhili Xu, Gloria M Culver, Jason P Rife
Primary Institution: Virginia Commonwealth University
Hypothesis
How have KsgA/Dim1 methyltransferases evolved to perform new functions beyond rRNA methylation?
Conclusion
KsgA/Dim1 proteins have adapted to roles beyond rRNA methyltransferase, influencing ribosome biogenesis and mitochondrial transcription.
Supporting Evidence
- KsgA is conserved across all life forms and has adapted to new functions.
- Dim1 is essential for processing pre-18S rRNA in eukaryotes.
- mtTFB serves as both a methyltransferase and a transcription factor in mitochondria.
Takeaway
Some proteins help make ribosomes, but they can also do other important jobs in cells. This study looks at how these proteins have changed over time.
Methodology
The study used structure and sequence comparisons along with a unified ribosome binding model.
Digital Object Identifier (DOI)
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