Glassy Character of DNA Hydration Water

2013 ◽  
Vol 117 (7) ◽  
pp. 2026-2031 ◽  
Author(s):  
Alessandro Paciaroni ◽  
Andrea Orecchini ◽  
Guido Goracci ◽  
Elena Cornicchi ◽  
Caterina Petrillo ◽  
...  
Keyword(s):  
Hydration Water ◽  
Dna Hydration

A2H-nmr study of the DNA hydration water in solid li-DNA assemblies

Biopolymers ◽  
1988 ◽  
Vol 27 (5) ◽  
pp. 717-732 ◽  
Author(s):  
Rolf Brandes ◽  
David R. Kearns ◽  
Allan Rupprecht
Keyword(s):  
Hydration Water ◽  
Nmr Study ◽  
Dna Hydration

Determination of relaxation time of DNA hydration water by THz-TDS

2012 ◽  
Author(s):  
Heyjin Son ◽  
Da-Hye Choi ◽  
Seonghoon Jung ◽  
Jaehun Park ◽  
Woong-Yang Park ◽  
...  
Keyword(s):  
Relaxation Time ◽  
Hydration Water ◽  
Dna Hydration

scholarly journals Experimental evidence of fragile-to-strong dynamic crossover in DNA hydration water

2006 ◽  
Vol 125 (17) ◽  
pp. 171103 ◽  
Author(s):  
S.-H. Chen ◽  
L. Liu ◽  
X. Chu ◽  
Y. Zhang ◽  
E. Fratini ◽  
...  
Keyword(s):  
Experimental Evidence ◽  
Hydration Water ◽  
Dna Hydration ◽  
Strong Dynamic ◽  
Dynamic Crossover

Collective density fluctuations of DNA hydration water in the time-window below 1 ps

2011 ◽  
Vol 135 (2) ◽  
pp. 025101 ◽  
Author(s):  
Elena Cornicchi ◽  
Federico Sebastiani ◽  
Alessio De Francesco ◽  
Andrea Orecchini ◽  
Alessandro Paciaroni ◽  
...  
Keyword(s):  
Time Window ◽  
Density Fluctuations ◽  
Hydration Water ◽  
Dna Hydration

ИЗУЧЕНИЕ СТРУКТУРЫ ДНК В ПЛЕНКАХ МЕТОДОМ ИК-ФУРЬЕ-СПЕКТРОСКОПИИ

2020 ◽  
Vol 65 (6) ◽  
pp. 1058-1064
Author(s):  
С.В. Пастон ◽  
◽  
А.М. Поляничко ◽  
О.В. Шуленина ◽  
Д.Н. Осинникова ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Hydration Shell ◽  
Aqueous Environment ◽  
Ir Absorption ◽  
Sodium Ions ◽  
High Molecular Weight Dna ◽  
Dna Hydration ◽  
Na Ions ◽  
Phosphate Groups ◽  
Dna Film

The aqueous environment and ionic surrounding are the most important factors determining the conformation of DNA and its functioning in the cell. The specificity of the interaction between DNA and cations is especially pronounced with a decrease in water activity. In this work, we studied the B-A transition in high molecular weight DNA with a decrease of humidity in the film with different contents of Na+ ions using FTIR spectroscopy. The IR spectrum of DNA is not only very sensitive to the state of its secondary structure, but also allows us to estimate the amount of water bound to DNA. Upon dehydration of the DNA film, changes characteristic of the B-A transition were observed in the IR absorption spectrum. Using thermogravimetric analysis, it was shown that the degree of DNA hydration reaches the saturation level at a relative humidity of 60% and decreases slightly upon further drying. It has been established that with increasing Na+ concentration, the amount of water strongly bound to DNA decreases. Along with it, sodium ions destroy the hydration shell of DNA and are able to interact directly with phosphate groups.

scholarly journals Successive Crystallization of Organically Templated Uranyl Sulfates: Synthesis and Crystal Structures of [pyH](H3O)[(UO2)3(SO4)4(H2O)2], [pyH]2[(UO2)6(SO4)7(H2O)], and [pyH]2[(UO2)2(SO4)3]

2021 ◽  
Vol 5 (1) ◽  
pp. 5
Author(s):  
Evgeny V. Nazarchuk ◽  
Dmitri O. Charkin ◽  
Oleg I. Siidra
Keyword(s):  
Hydrogen Bonds ◽  
Crystal Structures ◽  
Hydrothermal Treatment ◽  
Mother Liquor ◽  
Hydration Water ◽  
Isothermal Evaporation ◽  
Pyridinium Cations

Three new uranyl sulfates, [pyH](H3O)[(UO2)3(SO4)4(H2O)2] (1), [pyH]2[(UO2)6(SO4)7(H2O)] (2), and [pyH]2[(UO2)2(SO4)3] (3), were produced upon hydrothermal treatment and successive isothermal evaporation. 1 is monoclinic, P21/c, a = 14.3640(13), b = 10.0910(9), c = 18.8690(17) Å, β = 107.795(2), V = 2604.2(4) Å3, R1 = 0.038; 2 is orthorhombic, C2221, a = 10.1992(8), b = 18.5215(14), c = 22.7187(17) Å, V = 4291.7(6) Å3, R1 = 0.030; 3 is orthorhombic, Pccn, a = 9.7998(8), b = 10.0768(8), c = 20.947(2) Å, V = 2068.5(3) Å3, R1 = 0.055. In the structures of 1 and 2, the uranium polyhedra and SO4 tetrahedra share vertices to form ∞3[(UO2)3(SO4)4(H2O)2]2− and ∞3[(UO2)6(SO4)7(H2O)]2− frameworks featuring channels (12.2 × 6.7 Å in 1 and 12.9 × 6.5 Å in 2), which are occupied by pyridinium cations. The structure of 3 is comprised of ∞2[(UO2)2(SO4)3]2− layers linked by hydrogen bonds donated by pyridinium cations. The compounds 1–3 are formed during recrystallization processes, in which the evaporation of mother liquor leads to a stepwise loss of hydration water.

Highly precise characterization of the hydration state upon thermal denaturation of human serum albumin using a 65 GHz dielectric sensor

2020 ◽  
Vol 22 (35) ◽  
pp. 19468-19479 ◽  
Author(s):  
Keiichiro Shiraga ◽  
Mako Urabe ◽  
Takeshi Matsui ◽  
Shojiro Kikuchi ◽  
Yuichi Ogawa
Keyword(s):  
Human Serum Albumin ◽  
Serum Albumin ◽  
Human Serum ◽  
Thermal Denaturation ◽  
Hydration Water ◽  
Biological Functions ◽  
Dielectric Sensor ◽  
Hydration State ◽  
Precise Characterization

The biological functions of proteins depend on harmonization with hydration water surrounding them.

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