Name: APC-Cy7 Tandem
Brand: AAT Bioquest
SKU: 2625
Price: 232 USD
Availability: InStock

APC-Cy7 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-Cy7 is a popular color used in flow cytometry. Its primary absorption peak is at 651 nm with emission peak at~780 nm. AAT Bioquest also offers a unique preactivated APC-Cy7 to facilitate the APC-Cy7 tandem conjugations to antibodies and other proteins such as streptavidin and other secondary reagents. Our preactivated APC-Cy7 tandem is ready to conjugate, giving much higher yield than the conventionally tedious SMCC-based conjugation chemistry. In addition, our preactivated APC-Cy7 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.

Flow cytometry analysis of whole blood stained with APC-Cy7 anti-human CD4 *SK3* conjugate. The fluorescence signal was monitored using an Aurora spectral flow cytometer in the APC-Cy7 specific R7-A channel.

Catalog	Size	Price	Quantity
2625	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

Molecular weight	~105000
Solvent	Water

Spectral properties

Extinction coefficient (cm ^-1 M ^-1)	700000
Excitation (nm)	651
Emission (nm)	779

Storage, safety and handling

Certificate of Origin	Download PDF
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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Page updated on October 5, 2025