RNA Double-Helix Hybridization Measured by Fluorescence Correlation Spectroscopy

RNA double-strand hybridization is a key player in gene expression regulation. Single-stranded RNA of up to 300 nucleotides forms Watson-Crick base pairs with complementary messenger RNA. Fluorescence-based single-molecule methods allow to study RNA-RNA interaction under physiological conditions. Here is described, how the dissociation constant of RNA double strands can be determined by applying fluorescence correlation spectroscopy.