Name: ReadiUse™ Preactivated APC-Cy5.5 Tandem
Brand: AAT Bioquest
SKU: 2586
Price: 406 USD
Availability: InStock

ReadiUse™ Preactivated APC-Cy5.5 Tandem

Allophycocyanin (APC) is a phycobiliprotein isolated from Spirulina sp., a blue-green alga. Like other phycobiliproteins, APC is fluorescent, with an extremely high absorptivity and a high quantum efficiency. It is a protein which can be easily linked to antibodies and other proteins by conventional protein cross-linking techniques without altering its spectral characteristics. APC-Cy5.5 is a popular color used in flow cytometry. Its primary absorption peak is at 651 nm with emission peak at~700 nm. AAT Bioquest offers this preactivated APC-Cy5.5 to facilitate the APC-Cy5.5 tandem conjugations to antibodies and other proteins such as streptavidin and other secondary reagents. Our preactivated APC-Cy5.5 tandem is ready to conjugate, giving much higher yield than the conventionally tedious SMCC-based conjugation chemistry. In addition, our preactivated APC-Cy5.5 tandem is conjugated to a protein via its amino group that is abundant in proteins while SMCC chemistry targets the thiol group that has to be regenerated by the reduction of antibodies.

Our preactivated APC-Cy5.5 was premodified with our Buccutite™ FOL (provided). Your antibody (or other proteins) is modified with our Buccutite™ MTA (provided as free sample) to give MTA-modified protein (such as antibody). The MTA-modified protein readily reacts with FOL-modified APC-Cy5.5 (provided) to give the desired APC-Cy5.5-antibody conjugate in much higher yield than the SMCC chemistry. In addition our preactivated APC-Cy5.5 reacts with MTA-modified biopolymers at much lower concentrations than the SMCC chemistry.

Protocol

SDS

COA

Catalog	Size	Price	Quantity
2586	1 mg	Price

References

View all 46 references: Citation Explorer

Chromophore attachment to phycobiliprotein beta-subunits: phycocyanobilin:cysteine-beta84 phycobiliprotein lyase activity of CpeS-like protein from Anabaena Sp. PCC7120

Authors:

Zhao KH, Su P, Li J, Tu JM, Zhou M, Bubenzer C, Scheer H.

Journal:

J Biol Chem (2006): 8573

Excitation energy transfer from phycobiliprotein to chlorophyll d in intact cells of Acaryochloris marina studied by time- and wavelength-resolved fluorescence spectroscopy

Authors:

Petrasek Z, Schmitt FJ, Theiss C, Huyer J, Chen M, Larkum A, Eichler HJ, Kemnitz K, Eckert HJ.

Journal:

Photochem Photobiol Sci (2005): 1016

Single-molecule spectroscopy selectively probes donor and acceptor chromophores in the phycobiliprotein allophycocyanin

Authors:

Loos D, Cotlet M, De Schryver F, Habuchi S, Hofkens J.

Journal:

Biophys J (2004): 2598

Isolation and characterisation of phycobiliprotein rich mutant of cyanobacterium Synechocystis sp

Authors:

Prasanna R, Dhar DW, Dominic TK, Tiwari ON, Singh PK.

Journal:

Acta Biol Hung (2003): 113

Evaluation of Tolypothrix germplasm for phycobiliprotein content

Authors:

Prasanna R, Prasanna BM, Mohammadi SA, Singh PK.

Journal:

Folia Microbiol (Praha) (2003): 59

Physical properties

Solvent

Water

Spectral properties

Extinction coefficient (cm ^-1 M ^-1)	700000
Excitation (nm)	651
Emission (nm)	700

Storage, safety and handling

H-phrase	H303, H313, H333
Hazard symbol	XN
Intended use	Research Use Only (RUO)
R-phrase	R20, R21, R22
Storage	Refrigerated (2-8 °C); Minimize light exposure
UNSPSC	12171501

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Fax
Email	sales@aatbio.com
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Shipping	Standard overnight for United States, inquire for international

Page updated on October 8, 2025

A: ReadiUse™ Preactivated APC-Cy5.5 Tandem	1 vial (1 mg)
B: Buccutite™ MTA	1 vial (100 µg)
C: Spin Desalting Column	Not Included