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Mobility and temperature resistance of trehalose mycolates as key characteristics of the outer membrane of Mycobacterium tuberculosis. | LitMetric

Mobility and temperature resistance of trehalose mycolates as key characteristics of the outer membrane of Mycobacterium tuberculosis.

J Biomol Struct Dyn

a Department of Physics and Earth Sciences , University of Messina, Viale D'Alcontres 31, 98166 Messina , Italy.

Published: January 2016

AI Article Synopsis

Article Abstract

Trehalose mycolates are fundamental characteristics of the outer membrane (mycomembrane) of Mycobacterium tuberculosis and they are supposed to play a key role in the low permeability and high resistance of mycobacteria to many antibiotics; however, still, the molecular characteristics making mycolates so effective in their biological function are not fully understood. This work aims to investigate by quasi-elastic neutron scattering the diffusive dynamical properties of trehalose mycolates in water mixtures as a function of temperature, energy and exchanged wavevector Q in order to elucidate the dynamics-function relation in the mycomembrane. A comparison with lecithin lipids in water mixtures is performed since they are considered among the most rigid and resistant lipids. From the analysis of the data collected as a function of temperature, a lower temperature dependence of the mobility as well as a higher rigidity of trehalose mycolates in comparison with lecithin lipids are highlighted. The present findings provide detailed molecular information which allows to go ahead in the understanding at a molecular level of the resistance to stress and antibiotics by corynebacteria and mycobacteria.

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Source
http://dx.doi.org/10.1080/07391102.2014.887032DOI Listing

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