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Magnetic field exposure enhances mRNA expression of σ 32 in E. coli
Author(s) -
Cairo P.,
Greenebaum B.,
Goodman E.
Publication year - 1998
Publication title -
journal of cellular biochemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.028
H-Index - 165
eISSN - 1097-4644
pISSN - 0730-2312
DOI - 10.1002/(sici)1097-4644(19980101)68:1<1::aid-jcb1>3.0.co;2-#
Subject(s) - messenger rna , intracellular , escherichia coli , sigma factor , physics , rna polymerase , microbiology and biotechnology , biology , genetics , gene
Abstract The mechanism of interaction between weak electromagnetic fields and cells is not understood. As a result, the health effect(s) induced by exposure to these fields remains unclear. In addition to questions relating to the site of initial magnetic field (MF) interactions, the nature of the cell's response to these perturbations is also unclear. We examined the hypothesis that the cells respond to MFs in a manner similar to other environmental stressors such as heat. Using the bacterium Escherichia coli, we examined the mRNA levels of σ 32 , a protein that interacts with RNA polymerase to help it recognize a variety of stress promoters in the cell. Our data show that the intracellular level of σ 32 mRNA is enhanced following a 15‐min exposure to a 60 Hz, 1.1 mT magnetic field. J. Cell. Biochem. 68:1–7, 1998. © 1998 Wiley‐Liss, Inc.