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Sigma-Aldrich

Atto 655-Streptavidin

BioReagent, suitable for fluorescence

Synonym(s):

Streptavidin-Atto 655

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About This Item

UNSPSC Code:
12352116
NACRES:
NA.32

product line

BioReagent

form

powder

manufacturer/tradename

ATTO-TEC GmbH

solubility

DMF: soluble
DMSO: soluble
acetonitrile: soluble

fluorescence

λex 655 nm; λem 680 nm in 0.1 M phosphate pH 7.0

suitability

suitable for fluorescence
suitable for gel electrophoresis

storage temp.

−20°C

Application

Atto 655 is a fluorescent label with high molecular absorption (125.000) and quantum yield (0.30), as well as sufficient stoke′s shift (excitation maximum 663 nm, emission maximum 684 nm). There is very little cis-trans-isomerisation, which limits brightness and reproducibility for many other dyes. Atto 655 has been coupled to streptavidin to enable various types of assays based on the specific affinity of biotin to streptavidin. Streptavidin conjugates are used as secondary detection reagents in histochemical applications, flow cytometry, microarrays, blot analysis and immunoassays.

Analysis Note

free of unconjugated dye

Legal Information

This product is for Research use only. In case of intended commercialization, please contact the IP-holder (ATTO-TEC GmbH, Germany) for licensing.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Breaking the Diffraction Barrier in Fluorescence Microscopy by Optical Shelving.
Bretschneider, S.; Eggeling, Chr.; Hell, S. W.
Physical Review Letters, 98(21) (2007)
Simple buffers for 3D STORM microscopy.
van de Linde, S.; Kasper, R.; Heilemann, M.; Sauer, M.
Applied Physics B: Lasers and Optics, 93(4), 725-731 (2008)
Triple-Color Super-Resolution Imaging of Live Cells. Resolving Submicroscopic Receptor Organization in the Plasma Membrane.
Wilmes, S.; Staufenbiel, M.; Lisse, D.; Richter, Ch. P.; Beutel, O.; Busch, K. B. et al.
Angewandte Chemie (International Edition in English), 124(20), 4952-4955 (2012)
Nicolas Olivier et al.
Biomedical optics express, 4(6), 885-899 (2013-06-14)
3D STORM is one of the leading methods for super-resolution imaging, with resolution down to 10 nm in the lateral direction, and 30-50 nm in the axial direction. However, there is one important requirement to perform this type of imaging:
Dynamic Superresolution Imaging of Endogenous Proteins on Living Cells at Ultra-High Density.
Giannone, G.; et al.
Biophysical Journal, 99(4), 1303-1310 (2010)
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Atto Dyes for Superior Fluorescent Imaging

Atto dyes are a series of fluorescent dyes that meet the critical needs of modern fluorescent technologies.

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