First Author | Dutta A | Year | 2013 |
Journal | FEBS Lett | Volume | 587 |
Issue | 18 | Pages | 2918-23 |
PubMed ID | 23892077 | Mgi Jnum | J:200924 |
Mgi Id | MGI:5510275 | Doi | 10.1016/j.febslet.2013.07.023 |
Citation | Dutta A, et al. (2013) The effect of beta2-alpha2 loop mutation on amyloidogenic properties of the prion protein. FEBS Lett 587(18):2918-23 |
abstractText | Recent studies revealed that elk-like S170N/N174T mutation in mouse prion protein (moPrP), which results in an increased rigidity of beta2-alpha2 loop, leads to a prion disease in transgenic mice. Here we characterized the effect of this mutation on biophysical properties of moPrP. Despite similar thermodynamic stabilities of wild type and mutant proteins, the latter was found to have markedly higher propensity to form amyloid fibrils. Importantly, this effect was observed even under fully denaturing conditions, indicating that the increased conversion propensity of the mutant protein is not due to loop rigidity but rather results from greater amyloidogenic potential of the amino acid sequence within the loop region of S170N/N174T moPrP. |