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Printable Handouts
Navigable Slide Index
- Introduction
- Regulatory genomics and systems biology
- Outline
- Intrinsically unstructured proteins (IUP)
- IUPs- structural and biophysical advantage
- IUPs- functional advantage (1)
- IUPs- functional advantage (2)
- IUPs- thermodynamic and kinetic advantage
- IUPs- functional advantages (3)
- IUPs- conformational advantage
- Identification of intrinsically unstructured proteins
- Functions of intrinsically unstructured proteins
- Disadvantages of unstructured regions (1)
- Disadvantages of unstructured regions (2)
- Unstructured regions in proteins- summary
- Cells minimize the risks of unstructured proteins
- Regulatory mechanisms may affect IUP levels
- Tight regulation of IUPs
- Key regulatory events affecting protein availability
- IUPs in yeast
- Gene-ontology functional enrichment analysis
- Regulating availability of transcripts
- Genome-scale datasets on transcript availability
- Transcripts encoding IUPs are tightly controlled
- Mechanisms affecting transcript stability (1)
- Mechanisms affecting transcript stability (2)
- Regulating availability of proteins
- Genome-scale datasets on protein availability
- IUPs are tightly controlled at the translational level
- IUPs are enriched in containing PEST sequences
- Transcription and translation regulate IUPs
- Aggregation prone IUPs- more tightly regulated
- Control calculation (1)
- Control calculation (2)
- Control calculation (3)
- Tight regulation of IUPs- evolutionarily conserved
- Implications of the tight regulation of IUPs
- Control of IUP affects signaling fidelity/regulation
- Control of specific IUP affects protein aggregation
- Hypothetical 'availability - outcome' landscape
- Open questions and implications
- Conclusion
- Acknowledgements
- Regulatory genomics and systems biology group
Topics Covered
- Regulatory genomics and systems biology
- Intrinsically unstructured proteins (IUPs): structural and biophysical advantage
- Functional advantage
- Thermodynamic and kinetic advantage
- Conformational advantage
- Identification of IUPs
- Functions of IUPs
- Disadvantages of unstructured regions
- Unstructured regions in proteins
- Cells minimize the risks of unstructured proteins
- Tight regulation of IUPs
- Key regulatory events affecting protein availability
- IUPs in yeast
- Gene-ontology functional enrichment analysis
- Genome-scale datasets on transcript availability
- Transcripts encoding IUPs are tightly controlled
- Mechanisms affecting transcript stability
- Genome-scale datasets on protein availability
- IUPs are tightly controlled at the translational level
- PEST sequences
- Aggregation prone IUPs: more tightly regulated
- Control calculation
- Tight regulation of IUPs is evolutionarily conserved
- Control of IUP affects signaling fidelity/regulation
- Control of specific IUP affects protein aggregation
Talk Citation
Babu, M.M. (2016, November 1). Intrinsically unstructured proteins: regulation and disease [Video file]. In The Biomedical & Life Sciences Collection, Henry Stewart Talks. Retrieved November 21, 2024, from https://doi.org/10.69645/EIRQ4733.Export Citation (RIS)
Publication History
Financial Disclosures
- Dr. M. Madan Babu has not informed HSTalks of any commercial/financial relationship that it is appropriate to disclose.
Intrinsically unstructured proteins: regulation and disease
A selection of talks on Cell Biology
Transcript
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0:00
Hi, my name is Madan Babu,
and I'm a Group Leader at the MRC Laboratory of Molecular Biology in Cambridge, UK.
What l'll be doing in the next 45 minutes or so,
is to talk to you about a problem that we've been interested in for several years,
which involves a group of proteins called intrinsically unstructured proteins.
Research of the last several decades have clearly shown,
that most proteins need to adopt
a defined three-dimensional structure in order to carry out their function.
And this is exemplified by the availability of numerous enzyme structures,
that highlight the requirement to position
particular chemical groups in special proximity,
in order to carry out enzyme catalysis.
However, more recently, it's becoming increasingly clear that the large fraction of
the proteome of any organism do not encode
for proteins that adopt a defined three-dimensional structure,
but they are nevertheless important for function.
And it is this group of proteins that
I'll be referencing as intrinsically unstructured proteins,
and this is going to be the topic of my discussion today.
1:01
Before moving on with my presentation,
I'd like to spend a slide describing the kind of work that we do in my group.
So my group is basically interested in understanding how regulation
is achieved in cellular systems at different levels of complexity.
We address this problem by investigating
regulatory processes that involve protein-protein,
protein-nucleic acids,
and protein-small molecule interactions at three distinct levels of complexity.
At the molecular level,
we aim to discover novel features of regulatory systems,
such as discovering new domains and identifying functions of un-characterized proteins.
At the systems level,
we aim to understand how the different regulatory processes
influence each other to maintain cellular homeostasis.
And at the genomic level,
we aim to understand the interplay between regulation and genome organization.
So in today's presentation,
I'll discuss some of our work on the regulation of intrinsically unstructured proteins.