PROTON TUNNELING IN HYDRATED BIOLOGICAL TISSUES NEAR 200-K

被引：11

作者：

CARERI, G ^{[1
]}

CONSOLINI, G ^{[1
]}

BRUNI, F ^{[1
]}

机构：

[1] CORNELL UNIV,DIV BIOL SCI,PLANT BIOL SECT,ITHACA,NY 14853

来源：

BIOPHYSICAL CHEMISTRY | 1990年 / 37卷 / 1-3期

关键词：

Hydration; Proton; Tunneling;

D O I：

10.1016/0301-4622(90)88016-L

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

We measure the protonic conductivity in water cluster adsorbed on intact samples of viable biological samples (corn embryo and endosperm, Artemia cysts, and Typha pollen) below room temperature. In the low-temperature region, the conductivity increases with temperature as exp T6, in agreement with prediction by the theory of dissipative quantum tunneling. We detect the onset of this effect near 180 K, where a glass transition in the hydrated protein matrix is known to take place. Above 220 K other transitions are superimposed onto this simple behavior. © 1990.

引用

页码：165 / 170

页数：6

共 17 条

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