We observe a logarithmic-like decay of the intermediate scattering function (ISF) of the hydrogen atoms in the protein molecule in the time interval from 10 ps to 1 ns. We analyze the ISF, F(H)(Q,t), in terms of an asymptotic expression proposed by mode coupling theory (MCT). The result clearly shows that this logarithmic stretching of the beta-relaxation range is real, substantiating the prediction of the molecular dynamics (MD) simulation results that used the formula proposed by MCT for the analysis of ISF.
Experimental Evidence of Logarithmic Relaxation in Single-particle Dynamics of Protein Molecules / X.-Q. Chu; M. Lagi; E. Mamontov; E. Fratini; P. Baglioni; S.-H. Chen. - In: SOFT MATTER. - ISSN 1744-683X. - STAMPA. - 6:(2010), pp. 2623-2627. [10.1039/c002602f]
Experimental Evidence of Logarithmic Relaxation in Single-particle Dynamics of Protein Molecules
LAGI, MARCO;FRATINI, EMILIANO;BAGLIONI, PIERO;
2010
Abstract
We observe a logarithmic-like decay of the intermediate scattering function (ISF) of the hydrogen atoms in the protein molecule in the time interval from 10 ps to 1 ns. We analyze the ISF, F(H)(Q,t), in terms of an asymptotic expression proposed by mode coupling theory (MCT). The result clearly shows that this logarithmic stretching of the beta-relaxation range is real, substantiating the prediction of the molecular dynamics (MD) simulation results that used the formula proposed by MCT for the analysis of ISF.
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