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SNAP-tag Substrates

NEB offers a large selection of fluorescent labels (substrates) for SNAP-tag fusion proteins. SNAP-tag® substrates consist of a fluorophore conjugated to guanine or chloropyrimidine leaving groups via a benzyl linker. Substrates label the SNAP-tag® without the need for additional enzymes. Cell-permeable substrates (SNAP-Cell®) are suitable for both intracellular and cell-surface labeling, whereas non-cell-permeable substrates (SNAP-Surface®) are specific for fusion proteins expressed on the cell surface only.

Choose Product:

SNAP-tag® Substrates





SNAP-Cell® 505-Star

SNAP-Cell® Block

SNAP-Cell® Oregon Green®

SNAP-Cell® TMR-Star

SNAP-Cell® 430

SNAP-Cell® 647-SiR

SNAP-Surface® 488

SNAP-Surface® 549

SNAP-Surface® 594

SNAP-Surface® 649

SNAP-Surface® Alexa Fluor® 488

SNAP-Surface® Alexa Fluor® 546

SNAP-Surface® Alexa Fluor® 647

SNAP-Surface® Block