Creating 20.109(S17):Scan slides to identify FKBP12 binders (Day5)
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Introduction
In the previous laboratory session you screened SMM slides using your purified FKBP12 protein. To identify which of the small molecules you screened bind FKBP12, your slides will be evaluated using a Genepix microarray scanner. The scanner will measure the fluorescence signal emitted from each spot on the slide where a ligand was printed. Considering that neither the ligands nor FKBP12 protein is fluorescent, from where does this signal arise?
A positive control was included on each slide. You may remember that 4 x 48 spots were printed with rapamycin. Rapamycin is a macrolide compound used to suppress the immune system in organ transplant recipients. For our purposes, it is a compound known to bind FKBP12. In the image to the right, the bright red spots show where FKBP12 bound to the rapamycin at these locations.