Journal
OPEN BIOLOGY
Volume 10, Issue 12, Pages -Publisher
ROYAL SOC
DOI: 10.1098/rsob.200328
Keywords
RNA-binding proteins; RNA-binding modules; RNA-binding domains; intrinsically disordered regions; linkers; assemblies; amyloids
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Funding
- Schaefer Research Scholars Program
- Hirschl Family Trust
- NIH [R35 GM124633-01]
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Most RNA-binding modules are small and bind few nucleotides. RNA-binding proteins typically attain the physiological specificity and affinity for their RNA targets by combining several RNA-binding modules. Here, we review how disordered linkers connecting RNA-binding modules govern the specificity and affinity of RNA-protein interactions by regulating the effective concentration of these modules and their relative orientation. RNA-binding proteins also often contain extended intrinsically disordered regions that mediate protein-protein and RNA-protein interactions with multiple partners. We discuss how these regions can connect proteins and RNA resulting in heterogeneous higher-order assemblies such as membrane-less compartments and amyloid-like structures that have the characteristics of multi-modular entities. The assembled state generates additional RNA-binding specificity and affinity properties that contribute to further the function of RNA-binding proteins within the cellular environment.
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