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HuR thermal stability is dependent on domain binding and upon phosphorylation

 

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Opened Access HuR thermal stability is dependent on domain binding and upon phosphorylation
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Author: Scheiba, Rafael Manfred
Aroca Aguilar, Ángeles
Díaz Moreno, Irene
Date: 2012
Published in: European Biophysics Journal, 41, 597-605.
Document type: Article
Abstract: Human antigen R (HuR) is a multitasking RNA binding protein involved in posttranscriptional regulation by recognizing adenine- and uracile-rich elements placed at the 3′-untranslated regions of messenger RNAs (mRNAs). The modular architecture of the protein, which consists of two N-terminal RNA recognition motifs (RRMs) in tandem spaced from a third one by a nuclear-cytoplasmic shuttling sequence, controls the stability of many mRNA targets, as well as their translation rates. A higher level of regulation comes from the fact that both localization and function of HuR are strictly regulated by phosphorylation. Here, we report how the thermal stability of RRM2 is decreased by the presence of RRM1, indicating that both domains are interacting in solution. In addition, even though no significant structural changes are observed among mutants of HuR RRM12 mimicking phosphorylated species, slight differences in stability are appreciable, which may explain the RNA binding activity of HuR.
Cite: Scheiba, R.M., Aroca Aguilar, Á. y Díaz Moreno, I. (2012). HuR thermal stability is dependent on domain binding and upon phosphorylation. European Biophysics Journal, 41, 597-605.
Size: 430.6Kb
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URI: https://hdl.handle.net/11441/70833

DOI: 10.1007/s00249-012-0827-3

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