Description
SNAP-Surface Alexa Fluor®647™ is a photostable fluorescent substrate that can be used to label SNAP-tag™ fusion proteins in solution or on the surface of living cells. This cell impermeable substrate is based on Alexa Fluor®647 and is suitable for standard 635 nm or 650 nm diode laser excitation. It has an excitation maximum at 652 nm and emission maximum at 670 nm. This package includes 50 nmol of SNAP-Surface Alexa Fluor®647 substrate, sufficient to make 10 ml of a 5 µM SNAP-tag fusion protein labeling solution.