Creativity exercise

Because of luciferase, aequorin, fluorescent proteins and their thousand derivative reporter genes, we are used to consider the light as the result of a transcriptional event. However, creativity sometimes implies to exchange the causes with consequences in order to re-invent the panel of available tools. So, what would occur with light-activated transcription? Andrew Hires, on its beautiful Brain Windows, offer us a journal club. Enjoy it.