IPG-1 TMA⁺ Salt


Yellow-green fluorescent, potassium indicator, membrane-impermeable. Lower potassium affinity (Kd = 50 mM) than IPG-2 and IPG-4.

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525 nm 


545 nm 


50 mM


Synonyms: ION Potassium Green – 1, Asante Potassium Green – 1, APG-1
Product code: 10 x 50ug: 3043F / 500ug: 3043C

product description

IPG-1 (ion potassium green - 1), a low-affinity fluorescent potassium indicator, banner
ION Potassium Green – 1 (IPG-1) is the best in class yellow-green fluorescent, intracellular potassium (K⁺) indicator for measuring changes at most intracellular K+ concentrations. IPG-1 has Ex/Em: 525 nm/545 nm and a high-sensitivity to detect small changes in K⁺ concentration. IPG-1 has a lower affinity (Kd = 50 mM) than IPG-2 (Kd = 18 mM) or IPG-4 (Kd = 7 mM)

IPG-1 TMA⁺ salt is a membrane impermeable form of IPG-1 that can be used in lipid membrane-free systems, in liposomes, or can be introduced into cells by electroporation, microinjection or other methods.

Fluorescence data of IPG-1 potassium indicator response to potassium at different concentrations and a saturation binding curve.


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