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Sigma-Aldrich

Atto 488 maleimide

BioReagent, suitable for fluorescence, ≥90% (HPLC)

Synonym(s):

Atto 488

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About This Item

MDL number:
UNSPSC Code:
12352111
NACRES:
NA.32

product line

BioReagent

assay

≥90% (HPLC)
≥90% (degree of coupling )

manufacturer/tradename

ATTO-TEC GmbH

λ

in methanol: water (1:1) (with 0.1% perchloric acid)

UV absorption

λ: 501-506 nm Amax

suitability

suitable for fluorescence

storage temp.

−20°C

General description

Atto 488 Maleimide is a hydrophilic fluorescent label with high molecular absorption (90.000) and quantum yield (0.80). The fluorescence activity is excited at a maximum of 501nm, and the maximum emission is 523nm. Atto 488 Maleimide is optimized for argon laser excitation and characterized by high photostability. Hydrolysis of maleimides to a mixture of isomeric nonreactive maleamic acids can compete significantly with thiol modification, particularly above pH 8. Post coupling to a substrate, the label carries a net electrical charge of -1.

Application

Atto 488 Maleimide is used for labelling amines, which usually requires a higher pH than the reaction of maleimides with thiols. It is a well-suited fluorescent label for thiol groups.

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

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


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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Analysis of fluorescent nanostructures in biological systems by means of spectral position determination microscopy (SPDM).
Muller, P., et al. et al.
Current Microscopy Contributions to Advances in Science and Technology, 1, 3-12 (2012)
Mohd A Mohd Ridzuan et al.
PloS one, 7(3), e33845-e33845 (2012-04-06)
An actomyosin motor complex assembled below the parasite's plasma membrane drives erythrocyte invasion by Plasmodium falciparum merozoites. The complex is comprised of several proteins including myosin (MyoA), myosin tail domain interacting protein (MTIP) and glideosome associated proteins (GAP) 45 and
Lucia De Rosa et al.
Organic & biomolecular chemistry, 10(2), 273-280 (2011-11-11)
In the last few years, the use of labeled proteins has significantly expanded in the life sciences. Now, labeled proteins are indispensable tools for a wide spectrum of biophysical and chemical biology applications. In particular, the quest for more sophisticated
Jonas K Hannestad et al.
ACS nano, 7(1), 308-315 (2012-12-12)
We use single-molecule fluorescence microscopy to monitor individual hybridization reactions between membrane-anchored DNA strands, occurring in nanofluidic lipid monolayer films deposited on Teflon AF substrates. The DNA molecules are labeled with different fluorescent dyes, which make it possible to simultaneously
Thiol reactive probes and chemosensors.
Peng H, Chen W, Cheng Y, et al.
Sensors, 12, 15907-15946 (2012)

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