SPY555-FastAct_X is a bright, orange, fluorogenic & non toxic F-actin probe based on our SPY™ dyes series. Its optimized actin ligand was engineered to avoid F-actin stabilization and fast exchange1). This unique feature renders SPY555-FastAct_X non-toxic and minimally perturbing cellular actin processes. It is able to label highy dynamic actin, just like LifeAct™** but the probe does not require any genetic manipulation, transfection or overexpression of fluorescent proteins. SPY555-FastAct_X is based on a bright, low-phototoxic & photostable SPY555 fluorophore which is far superior than fluorescent proteins and STED compatible. Probe quantity allows 100 staining experiments
