Jackson Immuno Research Inc.
specializing in secondary antibodies and conjugates
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Whole IgG Affinity-Purified Secondary Antibodies

"I have used a wide variety of secondaries and Jackson ImmunoResearch has consistently been the best. The fluorophores are bright and stable and their selective (x reactivity removed) secondaries have always shown species specificity in multiple labeling."

Janet Duerr, Ohio University

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R-Phycoerythrin, R-PE

R-PE Technical Information

R-PE (R-Phycoerythrin) is a 240 kDa light-harvesting phycobiliprotein found in red macrophytic algae (seaweed). After phycobiliproteins are conjugated to secondary antibodies, there is little fluorescence quenching, which results in conjugates of high specific fluorescence compared with conventional fluorophore-antibody conjugates. R-PE can be excited by light over a wide range of the visible spectrum, is highly water soluble, has a relatively low isoelectric point, and lacks potentially sticky carbohydrates. The relatively high molecular weight of R-PE may preclude its use in procedures requiring good penetration into cells and tissues. It is predominantly intended for surface labeling of cells for flow cytometry.

R-PE is available conjugated to:

Excitation Peak (nm) Emission Peak (nm)
R-Phycoerythrin R-PE many, 488 580

R-PE Conjugated Antibodies

Control Reagents Product Code
ChromPure Donkey IgG, F(ab')₂ fragment 017-110-006
ChromPure Goat IgG, whole molecule 005-110-003
ChromPure Goat IgG, F(ab')₂ fragment 005-110-006
Streptavidin Product Code
R-Phycoerythrin Streptavidin 016-110-084

Spectra Viewer

Use the spectra viewer below to compare R-PE with other fluorophores, along with instrument specifics (laser/filter) for suitability in your assay.

  Show Excitation and Emission Spectra