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Brief Communication

Nature Methods 3, 23–25 (1 January 2006) | doi:10.1038/nmeth816

Fluorescent sensors for rapid monitoring of intracellular cGMP

Viacheslav O Nikolaev , Stepan Gambaryan & Martin J Lohse

Sensors based on fluorescence resonance energy transfer (FRET) are powerful tools to monitor signaling events in living mammalian cells. Here we describe development and use of new sensors for cyclic GMP (cGMP) based on cGMP binding domains from cGMP-dependent protein kinase I (GKI) and from phosphodiesterases (PDEs).