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Default Wide-line NMR and DSC studies on intrinsically disordered p53 transactivation domain and its helically pre-structured segment.

Wide-line NMR and DSC studies on intrinsically disordered p53 transactivation domain and its helically pre-structured segment.

Related Articles Wide-line NMR and DSC studies on intrinsically disordered p53 transactivation domain and its helically pre-structured segment.

BMB Rep. 2016 Apr 4;

Authors: Tompa P, Kim KH, Bokor M, Kamasa P, Tantos Á, Fritz B, Kim DH, Lee C, Verebélyi T, Tompa K

Abstract
Wide-line 1H NMR intensity and differential scanning calorimetry measurements were carried out on the intrinsically disordered 73-residue full transactivation domain (TAD) of p53 tumor suppressor protein and two peptides, one a wild type p53 TAD peptide with a helix pre-structuring property and a mutant peptide with a disabled helix-forming propensity in order to characterize their water and ion binding characteristics. By quantifying the number of hydrate water molecules, we provide microscopic description for the interactions of water with a wild-type p53 TAD and two p53 TAD peptides. The results provide direct evidence that intrinsically disordered proteins (IDPs) and a less structured peptide not only have a higher hydration capacity than globular proteins but also are able to bind a larger amount of charged solute ions.


PMID: 27418282 [PubMed - as supplied by publisher]



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