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ReadiUse™ Preactivated PE
R-Phycoerythrin (PE) is isolated from red algae. Its primary absorption peak is at 565 nm with secondary peaks at 496 and 545 nm. AAT Bioquest offers this preactivated PE to facilitate the PE conjugations to antibodies and other proteins such as streptavidin and other secondary reagents. Our preactivated PE is ready to conjugate, giving much higher yield than the conventionally tedious SMCC-based conjugation chemistry. In addition, our preactivated PE 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.
<p>Our preactivated PE was premodified with our Buccutite&trade; FOL (provided). Your antibody (or other proteins) is modified with our Buccutite&trade; MTA (provided as free sample) to give MTA-modified protein (such as antibody). The MTA-modified protein readily reacts with FOL-modified PE (provided) to give the desired PE-antibody conjugate in much higher yield than the SMCC chemistry. In addition our preactivated PE reacts with MTA-modified biopolymers at much lower concentrations than the SMCC chemistry.</p>
<p>Our preactivated PE was premodified with our Buccutite&trade; FOL (provided). Your antibody (or other proteins) is modified with our Buccutite&trade; MTA (provided as free sample) to give MTA-modified protein (such as antibody). The MTA-modified protein readily reacts with FOL-modified PE (provided) to give the desired PE-antibody conjugate in much higher yield than the SMCC chemistry. In addition our preactivated PE reacts with MTA-modified biopolymers at much lower concentrations than the SMCC chemistry.</p>
protocol
Protocol
sds
SDS
COA
CatalogSize
Price
Quantity
25601 mg
Price
 
Physical properties
SolventWater
Spectral properties
Correction factor (280 nm)0.175
Extinction coefficient (cm -1 M -1)
1960000
Excitation (nm)565
Emission (nm)574
Quantum yield
0.82
Storage, safety and handling
H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22
StorageRefrigerated (2-8 °C); Minimize light exposure
UNSPSC12171501
Documents
Protocol
Safety Data Sheet
Certificate of Analysis
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Page updated on October 18, 2025