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Publication - Dr Adam Perriman

    The effect of surface charge on the thermal stability and ice recrystallization inhibition activity of antifreeze protein III (AFP III)

    Citation

    Deller, R, Carter, B, Zampetakis, I, Scarpa, F & Perriman, A, 2018, ‘The effect of surface charge on the thermal stability and ice recrystallization inhibition activity of antifreeze protein III (AFP III)’. Biochemical and Biophysical Research Communications, vol 495., pp. 1055-1060

    Abstract

    The aim of this study was to examine the effect of chemical cationization on the structure and function of antifreeze protein III (AFP III) over an extreme temperature range (−40°C to +90°C) using far-UV synchrotron radiation circular dichroism (SRCD) and ice recrystallization inhibition (IRI) assays. Chemical cationization was able to produce a modified AFP III with a net cationic charge at physiological pH that had enhanced resistance to denaturation at elevated temperatures, with no immediate negative impact on protein structure at subzero temperatures. Furthermore, cationized AFP III retained an IRI activity similar to that of native AFP III. Consequently, chemical cationization may provide a pathway to the development of more robust antifreeze proteins as supplementary cryoprotectants in the cryopreservation of clinically relevant cells.

    Full details in the University publications repository