On the microscopic origin of the cryoprotective effect in lysine solutions

Andrés Henao; Guadalupe N Ruiz; Nicola Steinke; Silvina Cerveny; Roberto Macovez; Elvira Guàrdia; Sebastian Busch; Sylvia E McLain; Christian D Lorenz; Luis Carlos Pardo

doi:10.1039/c9cp06192d

On the microscopic origin of the cryoprotective effect in lysine solutions

Andrés Henao, Guadalupe N Ruiz, Nicola Steinke, Silvina Cerveny, Roberto Macovez, Elvira Guàrdia, Sebastian Busch, Sylvia E McLain, Christian D Lorenz, Luis Carlos Pardo

Grup de Caracterització de Materials, Departament de Física, ETSEIB, Universitat Politècnica de Catalunya, C/Eduard Maristany 10, E-08019 Barcelona, Spain. [email protected].

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

The amino acid lysine has been shown to prevent water crystallization at low temperatures in saturated aqueous solutions [S. Cerveny and J. Swenson, Phys. Chem. Chem. Phys., 2014, 16, 22382-22390]. Here, we investigate two ratios of water and lysine (5.4 water molecules per lysine (saturated) and 11 water molecules per lysine) by means of the complementary use of computer simulations and neutron diffraction. By performing a detailed structural analysis we have been able to explain the anti-freeze properties of lysine by the strong hydrogen bond interactions of interstitial water molecules with lysine that prevent them from forming crystalline seeds. Additional water molecules beyond the 1 : 5.4 proportion are no longer tightly bonded to lysine and therefore are free to form crystals.

Original language	English
Pages (from-to)	6919-6927
Number of pages	9
Journal	Physical Chemistry Chemical Physics
Volume	22
Issue number	13
DOIs	https://doi.org/10.1039/c9cp06192d
Publication status	Published - 7 Apr 2020

Keywords

Computer Simulation
Cryoprotective Agents/chemistry
Crystallization
Hydrogen Bonding
Lysine/chemistry
Models, Molecular
Neutron Diffraction
Solutions/chemistry
Water/chemistry

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10.1039/c9cp06192d

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title = "On the microscopic origin of the cryoprotective effect in lysine solutions",

abstract = "The amino acid lysine has been shown to prevent water crystallization at low temperatures in saturated aqueous solutions [S. Cerveny and J. Swenson, Phys. Chem. Chem. Phys., 2014, 16, 22382-22390]. Here, we investigate two ratios of water and lysine (5.4 water molecules per lysine (saturated) and 11 water molecules per lysine) by means of the complementary use of computer simulations and neutron diffraction. By performing a detailed structural analysis we have been able to explain the anti-freeze properties of lysine by the strong hydrogen bond interactions of interstitial water molecules with lysine that prevent them from forming crystalline seeds. Additional water molecules beyond the 1 : 5.4 proportion are no longer tightly bonded to lysine and therefore are free to form crystals.",

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doi = "10.1039/c9cp06192d",

language = "English",

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T1 - On the microscopic origin of the cryoprotective effect in lysine solutions

AU - Henao, Andrés

AU - Ruiz, Guadalupe N

AU - Steinke, Nicola

AU - Cerveny, Silvina

AU - Macovez, Roberto

AU - Guàrdia, Elvira

AU - Busch, Sebastian

AU - McLain, Sylvia E

AU - Lorenz, Christian D

AU - Pardo, Luis Carlos

PY - 2020/4/7

Y1 - 2020/4/7

N2 - The amino acid lysine has been shown to prevent water crystallization at low temperatures in saturated aqueous solutions [S. Cerveny and J. Swenson, Phys. Chem. Chem. Phys., 2014, 16, 22382-22390]. Here, we investigate two ratios of water and lysine (5.4 water molecules per lysine (saturated) and 11 water molecules per lysine) by means of the complementary use of computer simulations and neutron diffraction. By performing a detailed structural analysis we have been able to explain the anti-freeze properties of lysine by the strong hydrogen bond interactions of interstitial water molecules with lysine that prevent them from forming crystalline seeds. Additional water molecules beyond the 1 : 5.4 proportion are no longer tightly bonded to lysine and therefore are free to form crystals.

AB - The amino acid lysine has been shown to prevent water crystallization at low temperatures in saturated aqueous solutions [S. Cerveny and J. Swenson, Phys. Chem. Chem. Phys., 2014, 16, 22382-22390]. Here, we investigate two ratios of water and lysine (5.4 water molecules per lysine (saturated) and 11 water molecules per lysine) by means of the complementary use of computer simulations and neutron diffraction. By performing a detailed structural analysis we have been able to explain the anti-freeze properties of lysine by the strong hydrogen bond interactions of interstitial water molecules with lysine that prevent them from forming crystalline seeds. Additional water molecules beyond the 1 : 5.4 proportion are no longer tightly bonded to lysine and therefore are free to form crystals.

KW - Computer Simulation

KW - Cryoprotective Agents/chemistry

KW - Crystallization

KW - Hydrogen Bonding

KW - Lysine/chemistry

KW - Models, Molecular

KW - Neutron Diffraction

KW - Solutions/chemistry

KW - Water/chemistry

U2 - 10.1039/c9cp06192d

DO - 10.1039/c9cp06192d

M3 - Article

C2 - 32181454

SN - 1463-9076

VL - 22

SP - 6919

EP - 6927

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

IS - 13

ER -

On the microscopic origin of the cryoprotective effect in lysine solutions

Abstract

Keywords

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