Skip to Content
Merck
All Photos(1)

Key Documents

View All Documentation

Safety Information

94149

Sigma-Aldrich

Atto 647N-Streptavidin

BioReagent, suitable for fluorescence

Synonym(s):

Streptavidin-Atto 647N

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

UNSPSC Code:
12161900
NACRES:
NA.25

product line

BioReagent

Quality Level

100

form

powder

manufacturer/tradename

ATTO-TEC GmbH

λ

in ethanol (with 0.1% trifluoroacetic acid)

UV absorption

λ: 650.0-656.0 nm Amax

suitability

corresponds for gel electrophoresis
suitable for fluorescence

storage temp.

−20°C

General description

Atto 647N is a new generation fluorescent dye dedicated towards the red spectral region. It is a cationic dye and carries a net electrical charge of +1 post substrate coupling reaction. Streptavidin, isolated from Streptomyces avidinii, is a tetrameric protein of 4 x 13.2 kDa which binds very tightly to the small molecule biotin. The dissociation constant of the complex is extremely small (Kd ≈ 10-15 M), ranking among the strongest non-covalent interactions. Atto streptavidin conjugates are readily soluble in water.

Application

Atto 647N-Streptavidin is designed for application in the area of life science, e.g., labeling of DNA, RNA or proteins. Atto streptavidin conjugates may be used as secondary detection reagents in flow cytometry, immunoassays, blot analysis, and histochemical applications. Atto 647N -Streptavidin is suitable for multiplex analysis, including multicolor imaging.

Features and Benefits

Atto 647N- Streptavidin has the following benefits-

  • Highly photostable. Strong absorption.
  • Excellent fluorescent quantum yield.
  • Highly resistant to ozone degradation.
  • Minimal triplet formation.

Analysis Note

dye-to-protein ratio ≥1.5

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

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

JAN Code

94149-1MG:

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’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Spatially resolved two-color diffusion measurements in human skin applied to transdermal liposome penetration
Brewer J, et al.
The Journal of Investigative Dermatology, 133(5), 1260-1268 (2013)
Nanoscale organization of nicotinic aceylcholine receptors by stimulated emission depletion microscopy.
Kellner, R.R., et al.
Neuroscience, 144(1), 135-143 (2007)
Stimulated emission depletion-based raster image correlation spectroscopy reveals biomolecular dynamics in live cells.
Hedde P.N.; et al.
Nature Communications, 4, 2093-2093 (2013)
Munc18-1 Tuning of Vesicle Merger and Fusion Pore Properties.
Jorgacevski, J.; et al.
The Journal of Neuroscience, 31(24), 9055-9066 (2011)
SNARE Function Is Not Involved in Early Endosome Docking.
Geumann, U.; et al.
Molecular Biology of the Cell, 19(12), 5327-5337 (2008)
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service