Turning genes on with light: Photochemical control of gene expression is a versatile tool for the elucidation of biological processes and the programming of new biological functions. Activation of protein expression in prokaryotic cells through light irradiation is achieved through a photocaged small molecule. Spatiotemporal regulation of the lac operon was obtained through the application of a photocaged isopropyl-β-D-thiogalactopyranoside derivative.
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Young et al. (2007) studied this question.
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