Substrate for SNAP-Tag®*: allows bright, fluorogenic, far-red visualization of any SNAP-tag® fusion protein of interest (POI) in live or fixed cells and tissues

SiR650-BG is a benzylguanine (BG) derivative of the SiR fluorophore. BG is the substrate for SNAP-tag®, which forms a covalent bond upon reacting with it. This enables the permanent labeling of any POI that is expressed as a SNAP-tag® fusion, allowing fluorescent imaging of your POI in live or fixed cells.

Key features

• Ab: 652 nm, Em: 674 nm-far-red spectrum
• Cell-permeable
• Works on live and fixed cells and tissues
• Compatible with further immunostaining after fixation
• Fluorogenic character: enhanced fluorescence when bound to SNAP-tag®
• Compatible with widefield, confocal, SIM, and STED imaging

SNAP-tag®is a registered trademark of New England Biolabs