[Globin coupled sensor and photosensitive signaling network--receptors of monochromatic light in bacteria Escherichia coli cells].
The effect of He-Ne laser radiation in wide range of intensities on E. coli cells division was studied in dependence on dose of light, on time of irradiation as well as on cAMP content in initial bacterial culture. Two maxima in E.coli growth stimulation vs dose or irradiation time curves were observed: first--irradiation time-independent, near 55 J/m2, second--dose-independent, near 100 s. It was proposed that latter maximum reflects kinetic parameters of photosensitive signaling network, and the former one reflects redox state of globin-coupled direct photosensor--EcDOS phosphodiesterase cAMP.
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D004307:Dose-Response Relationship, Radiation; D004926:Escherichia coli / Q000254:growth & development / Q000378:metabolism / Q000528:radiation effects*; D029968:Escherichia coli Proteins / Q000378:metabolism*; D005914:Globins / Q000378:metabolism*; D007259:Infrared Rays; D007834:Lasers; D010775:Photic Stimulation; D020283:Photoreceptors, Microbial / Q000378:metabolism*
D029968:Escherichia coli Proteins; D020283:Photoreceptors, Microbial; D005914:Globins