Phen green SK (PGSK) diacetate is a fluorescent heavy metal indicator that reacts with a variety of metal ions, including Fe
2+, Cd
2+, Co
2+, Ni
2+, and Zn
2+.
1 PGSK diacetate displays excitation/emission maxima of 507/532 nm, respectively, and fluorescence is quenched upon interaction with metal ions. It has been used to quantify iron in isolated rat hepatocytes, characterize metal-ion selectivity of divalent metal-ion transporter 1 (DMT1), and monitor copper transport across
P. sativum chloroplast membranes.
1,2,3
