Malleable Machines in Transcription Regulation: The Mediator Complex Intrinsic Disorder in Mediator's Regulation
Author Information
Author(s): Tóth-Petróczy Ágnes, Oldfield Christopher J., Simon István, Takagi Yuichiro, Dunker A. Keith, Uversky Vladimir N., Fuxreiter Monika
Primary Institution: Institute of Enzymology, Biological Research Center, Hungarian Academy of Sciences, Budapest, Hungary
Hypothesis
Mediator might utilize intrinsically disordered regions (IDRs) to facilitate structural transitions and transmit transcriptional signals.
Conclusion
The study suggests that intrinsic disorder plays an integral role in the function of the Mediator complex in transcription regulation.
Supporting Evidence
- A high prevalence of intrinsically disordered regions was found in various subunits of Mediator.
- IDRs can serve as target sites for multiple partners and facilitate assembly and disassembly of complexes.
- Short segments of IDRs, termed molecular recognition features (MoRFs), were identified in Mediator subunits.
Takeaway
The Mediator complex helps control how genes are turned on and off, and it has flexible parts that help it do this job better.
Methodology
Bioinformatics approaches were used to assess the preference of Mediator proteins for intrinsic disorder by analyzing sequences from various organisms.
Limitations
The predictions were performed on individual sequences, and regions predicted to be intrinsically disordered may adopt a well-folded structure upon interacting with other proteins.
Participant Demographics
The study analyzed Mediator sequences from 27 eukaryotic organisms, including Saccharomyces cerevisiae and Homo sapiens.
Digital Object Identifier (DOI)
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