$334.00
Yellow-green fluorescent, potassium indicator. Membrane-impermeable. Higher potassium affinity than IPG-1 and IPG-2, with improved selectivity for potassium over sodium.
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Excitation: 525 nm
Emission: 545 nm
Kd: 7 mM
MW: 1336 g/mol
Solubility: H2O
Purity: >90%
Filter Set: GFP, FITC, YFP
Storage: -20°C
Size: 10 x 50 ug, 500 ug
ION Potassium Green – 4 (IPG-4) is a yellow-green fluorescent, intracellular potassium (K⁺) indicator with Ex/Em: 525 nm/545 nm and a high-sensitivity to detect small changes in K⁺ concentration. IPG-4 has the highest affinity (Kd = 7 mM) among IPG analogues – IPG-2 (Kd = 18 mM) and IPG-1 (Kd = 50 mM).
IPG-4 TMA⁺ salt is a membrane impermeable form of IPG-4 that can be used in lipid membrane-free systems, in liposomes, or can be introduced into cells by electroporation, microinjection or other methods. IPG-4 has been successfully used as a sensor for extracellular K⁺.
