SoNar sensor for NADH/NAD+ ratioPre made plasmids expressing SoNar, highly responsive sensor for NADH NAD+ ratio. The SoNar sensor mainly expressed in cytosol. FR Biotechnology also provide SoNar sensor targeting to specific subcellular compartments such as mitochondria and nucleus. There are three forms of SoNar sensor. 1\SoNar sensor. The original SoNar sensors is excited by 420 and 485 nm and emit green fluorescence. The fluorescence ratio of SoNar when excited at 420 and 485 nm