Using molecular dynamics simulations, we show that a molecule of moderately active antifreeze protein (type III AFP, QAE HPLC-12 isoform) is able to interact with ice in an indirect manner. This interaction occurs between the ice binding site (IBS) of the AFP III molecule and the surface of ice, and it is mediated by liquid water, which separates these surfaces. As a result, the AFP III molecule positions itself at a specific orientation and distance relative to the surface of ice, which enables the effective binding (via hydrogen bonds) of the molecule with the nascent ice surface. Our results show that the final adsorption of the AFP III molecule on the surface of ice is not achieved by chaotic diffusion movements, but it is preceded by a remote, water-mediated interaction between the IBS and the surface of ice. The key factor that determines the existence of this interaction is the ability of water molecules to spontaneously form large, high-volume aggregates that can be anchored to both the IBS of the AFP molecule and the surface of ice. The results presented in this work for AFP III are in full agreement with the ones obtained by us previously for hyperactive CfAFP, which indicates that the mechanism of the remote interaction of these molecules with ice remains unchanged despite significant differences in the molecular structure of their ice binding sites. For that reason, we can expect that also other types of AFPs interact with the ice surface according to an analogous mechanism.
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7 March 2024
Research Article|
March 06 2024
Long-range, water-mediated interaction between a moderately active antifreeze protein molecule and the surface of ice Available to Purchase
Joanna Grabowska
;
Joanna Grabowska
a)
(Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Supervision, Writing – original draft, Writing – review & editing)
Faculty of Chemistry, Department of Physical Chemistry, Gdańsk University of Technology
, Narutowicza 11/12, 80–233 Gdańsk, Poland
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Anna Kuffel
;
Anna Kuffel
b)
(Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Supervision, Writing – original draft, Writing – review & editing)
Faculty of Chemistry, Department of Physical Chemistry, Gdańsk University of Technology
, Narutowicza 11/12, 80–233 Gdańsk, Poland
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Jan Zielkiewicz
Jan Zielkiewicz
c)
(Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Supervision, Writing – original draft, Writing – review & editing)
Faculty of Chemistry, Department of Physical Chemistry, Gdańsk University of Technology
, Narutowicza 11/12, 80–233 Gdańsk, Poland
c)Author to whom correspondence should be addressed: [email protected]
Search for other works by this author on:
Joanna Grabowska
Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Supervision, Writing – original draft, Writing – review & editing
a)
Faculty of Chemistry, Department of Physical Chemistry, Gdańsk University of Technology
, Narutowicza 11/12, 80–233 Gdańsk, Poland
Anna Kuffel
Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Supervision, Writing – original draft, Writing – review & editing
b)
Faculty of Chemistry, Department of Physical Chemistry, Gdańsk University of Technology
, Narutowicza 11/12, 80–233 Gdańsk, Poland
Jan Zielkiewicz
Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Supervision, Writing – original draft, Writing – review & editing
c)
Faculty of Chemistry, Department of Physical Chemistry, Gdańsk University of Technology
, Narutowicza 11/12, 80–233 Gdańsk, Poland
c)Author to whom correspondence should be addressed: [email protected]
a)
Electronic mail: [email protected]
b)
Electronic mail: [email protected]
J. Chem. Phys. 160, 095101 (2024)
Article history
Received:
November 15 2023
Accepted:
February 16 2024
Citation
Joanna Grabowska, Anna Kuffel, Jan Zielkiewicz; Long-range, water-mediated interaction between a moderately active antifreeze protein molecule and the surface of ice. J. Chem. Phys. 7 March 2024; 160 (9): 095101. https://doi.org/10.1063/5.0187663
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