Title: Song W, et al. Plug-and-play fluorophores extend the spectral properties of Spinach. J Am Chem Soc. 2014 Jan 29;136(4):1198-201.
Title: Strack RL, et al. Using Spinach-based sensors for fluorescence imaging of intracellular metabolites and proteins in living bacteria. Nat Protoc. 2014 Jan;9(1):146-55.