6533b7d4fe1ef96bd12620e0

RESEARCH PRODUCT

Calorimetric study of myoglobin embedded in trehalose-water matrixes

Bellavia GAntonio CupaneLorenzo Cordone

subject

Ternary numeral systemChemistryHydrogen bondMineralogyCondensed Matter Physicschemistry.chemical_compoundDifferential scanning calorimetryChemical engineeringMyoglobinDenaturation (biochemistry)Physical and Theoretical ChemistryGlass transitionTernary operationThermal analysisdenaturation DSC glass transition myoglobin trehalose

description

It has been suggested that in ‘dry’ protein–trehalose–water systems, water–mediated hydrogen bond network, whose strength increases by drying, anchors the protein to its surroundings. To further characterize this effect, we performed a DSC study on low-water myoglobin–trehalose systems. The denaturation temperature resulted to increase by decreasing hydration, and linearly correlated to the glass transition temperature of both the ternary protein–water–trehalose and the binary water–trehalose systems. Further measurements are being performed to investigate eventual differences among different saccharides.

https://doi.org/10.1007/s10973-008-9490-4