A rainbow of fluoromodules: a promiscuous scFv protein binds to and activates a diverse set of fluorogenic cyanine dyes

CL Pow, SA Marks, LD Jesper, GL Silva… - Journal of the …, 2008 - ACS Publications
CL Pow, SA Marks, LD Jesper, GL Silva, NI Shank, EW Jones, JM Burnette III, PB Berget…
Journal of the American Chemical Society, 2008ACS Publications
Combined magnetic and fluorescence cell sorting were used to select Fluorogen Activating
Proteins (FAPs) from a yeast surface-displayed library for binding to the fluorogenic cyanine
dye Dimethyl Indole Red (DIR). Several FAPs were selected that bind to the dye with low
nanomolar K d values and enhance fluorescence more than 100-fold. One of these FAPs
also exhibits considerable promiscuity, binding with high affinity to several other fluorogenic
cyanine dyes with emission wavelengths covering most of the visible and near-IR regions of …
Combined magnetic and fluorescence cell sorting were used to select Fluorogen Activating Proteins (FAPs) from a yeast surface-displayed library for binding to the fluorogenic cyanine dye Dimethyl Indole Red (DIR). Several FAPs were selected that bind to the dye with low nanomolar Kd values and enhance fluorescence more than 100-fold. One of these FAPs also exhibits considerable promiscuity, binding with high affinity to several other fluorogenic cyanine dyes with emission wavelengths covering most of the visible and near-IR regions of the spectrum. This significantly expands the number and wavelength range of scFv-based fluoromodules.
ACS Publications