Hydration Dynamics of Antifreeze Proteins

Projektinformationen

AntWatFre

ID Finanzhilfevereinbarung: 654936

DOI 10.3030/654936

Abgeschlossenes Projekt

EK-Unterschriftsdatum 26 März 2015

Startdatum 1 November 2015

Enddatum 31 Oktober 2017

Finanziert unter

• EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions

Gesamtkosten € 165 598,80

EU-Beitrag € 165 598,80

Koordiniert durch

STICHTING NEDERLANDSE WETENSCHAPPELIJK ONDERZOEK INSTITUTEN
Netherlands

Ziel

Antifreeze proteins (AFPs) and antifreeze glycoproteins (AFGPs) enable the survival of various organisms in freezing or subfreezing habitats. Even millimolar concentrations of these proteins are sufficient to lower the freezing temperature by several degrees. To reach a similar freezing point depression using sodium chloride would require molar concentrations. Nowadays AF(G)Ps already find applications in food industry, for instance to prevent recrystallization in ice cream and have great potential in medical applications (cell & organ storage, operations at low temperature). Protein-water interactions are of general interest owing to the importance of protein hydration for protein function; AF(G)Ps form an extraordinary example of this coupling that is sufficiently strong and specific that the protein controls macroscopic thermodynamic properties of water. Despite their importance in nature and their industrial relevance, the mechanisms by which AF(G)Ps depress the freezing point are still poorly understood. Although substantial information presently exists on the static protein structures and thermodynamic properties of these systems, molecular scale information on the dynamics of the conformations of the AF(G)Ps, their hydration shells and their binding to ice, is extremely scarce. Here we propose to study the molecular mechanisms by which AF(G)Ps lower the freezing temperature with advanced nonlinear spectroscopic techniques like 2D polarization-resolved vibrational spectroscopy and surface sum-frequency generation. These techniques enable the label-free study of the structural dynamics of the AF(G)P conformations, their hydration shells and their mechanism of binding to the ice surface. They will be used to study several key elements in the functioning of AF(G)Ps.

Wissenschaftliches Gebiet

• natural sciences › chemical sciences › inorganic chemistry › alkali metals
• natural sciences › physical sciences › thermodynamics
• natural sciences › biological sciences › biochemistry › biomolecules › proteins
• natural sciences › physical sciences › optics › spectroscopy

Programm/Programme

• H2020-EU.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions Main Programme
• H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility

Thema/Themen

• MSCA-IF-2014-EF - Marie Skłodowska-Curie Individual Fellowships (IF-EF)

Aufforderung zur Vorschlagseinreichung

H2020-MSCA-IF-2014

Finanzierungsplan

MSCA-IF-EF-ST - Standard EF

Koordinator

STICHTING NEDERLANDSE WETENSCHAPPELIJK ONDERZOEK INSTITUTEN

• Netto-EU-Beitrag: € 165 598,80
• Adresse: WINTHONTLAAN 2 ; 3526 KV Utrecht ; Niederlande
• Region: West-Nederland › Utrecht › Utrecht
• Aktivitätstyp: Research Organisations
• Gesamtkosten: € 165 598,80