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Intrinsically disordered proteins: regulation and disease
Authors:Babu M Madan  van der Lee Robin  de Groot Natalia Sanchez  Gsponer Jörg
Institution:1 MRC Laboratory of Molecular Biology, Hills Road, Cambridge CB2 0QH, United Kingdom
2 Centre for High-Throughput Biology, Department of Biochemistry & Molecular Biology, The University of British Columbia, Vancouver, Canada
Abstract:Intrinsically disordered proteins (IDPs) are enriched in signaling and regulatory functions because disordered segments permit interaction with several proteins and hence the re-use of the same protein in multiple pathways. Understanding IDP regulation is important because altered expression of IDPs is associated with many diseases. Recent studies show that IDPs are tightly regulated and that dosage-sensitive genes encode proteins with disordered segments. The tight regulation of IDPs may contribute to signaling fidelity by ensuring that IDPs are available in appropriate amounts and not present longer than needed. The altered availability of IDPs may result in sequestration of proteins through non-functional interactions involving disordered segments (i.e., molecular titration), thereby causing an imbalance in signaling pathways. We discuss the regulation of IDPs, address implications for signaling, disease and drug development, and outline directions for future research.
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