Strep-Tactin^®XT is a streptavidin variant, which binds to the Strep-tag^®II and Twin-Strep-tag^® with high affinity and specificity. It is available as conjugate with fluorescent dyes (DY-488, DY-549, DY-649) for fast and directed detection of N-terminally, C-terminally as well as internally tagged Strep-tag^®II or Twin-Strep-tag^® fusion proteins in applications like ELISA, FACS, immunohistochemistry, and immunocytochemistry.

The absorption/emission maxima of the fluorescent dyes are:
 • DY-488: 493/518 nm
 • DY-549: 550-560/575 nm
 • DY-649: 655/676 nm

Specifications

Amount:	100 µl
Concentration:	0.5 mg/ml
Conjugate:	DY-488, DY-549, DY-649
Form:	Suspension in PBS
Possible Application:	ELISA, western blot, FACS, Immunofluorescence
Specificity:	Twin-Strep-tag®; Strep-tag®II; cross reactivity: biotin

Shipping information

Storage:	2-8 °C
Stability:	6 months after shipping
Shipping:	Room temperature