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NATURE REVIEWS MOLECULAR CELL BIOLOGY
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NATURE PORTFOLIO
DOI: 10.1038/s41580-023-00673-0
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Intrinsically disordered protein regions, lacking a stable 3D structure, are structurally heterogeneous and widely present in all kingdoms of life. Despite their lack of a defined structure, these regions play essential roles in cellular processes and can be regulated by their structural and chemical context. Recent studies have advanced our understanding of the link between protein sequence and conformational behavior in disordered regions, but the connection between sequence and molecular function is still not well defined.
Intrinsically disordered protein regions exist in a collection of dynamic interconverting conformations that lack a stable 3D structure. These regions are structurally heterogeneous, ubiquitous and found across all kingdoms of life. Despite the absence of a defined 3D structure, disordered regions are essential for cellular processes ranging from transcriptional control and cell signalling to subcellular organization. Through their conformational malleability and adaptability, disordered regions extend the repertoire of macromolecular interactions and are readily tunable by their structural and chemical context, making them ideal responders to regulatory cues. Recent work has led to major advances in understanding the link between protein sequence and conformational behaviour in disordered regions, yet the link between sequence and molecular function is less well defined. Here we consider the biochemical and biophysical foundations that underlie how and why disordered regions can engage in productive cellular functions, provide examples of emerging concepts and discuss how protein disorder contributes to intracellular information processing and regulation of cellular function. Intrinsically disordered regions of proteins lack a defined 3D structure and exist in a collection of interconverting conformations. Recent work is shedding light on how - through their conformational malleability and adaptability - intrinsically disordered regions extend the repertoire of macromolecular interactions in the cell and contribute to key cellular functions.
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