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INDUCTION OF phr GENE EXPRESSION BY PYRIMIDINE DIMERS IN Escherichia coli
Author(s) -
Ihara Makoto,
Yamamoto Kazuo,
Ohnishi Takeo
Publication year - 1987
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1987.tb04781.x
Subject(s) - pyrimidine dimer , escherichia coli , chromophore , visible spectrum , dimer , photochemistry , chemistry , gene expression , gene , irradiation , photolyase , microbiology and biotechnology , pyrimidine , strain (injury) , biophysics , biology , biochemistry , optoelectronics , materials science , physics , dna repair , organic chemistry , anatomy , nuclear physics
The photoreactivating enzyme (PRE) is concerned with mainly two kinds of light wavelength. The PRE splits UVC (254 nm)‐induced pyrimidine dimer by absorbing UVA (320–380 nm) or visible light in its chromophore. The present paper demonstrates that the phr gene expression was efficiently induced in an excision defective strain (uvrA∼) after irradiation by UVC and UVB (290‐320 nm), but not by UVA and visible light. In addition, the induced activity was significantly depressed by irradiation with UVA and visible light. Therefore we conclude that the phr gene expression can be induced by pyrimidine dimers.