protein
Rapid expression of recombinant proteins

In vitro protein expression is a technique that enables researchers to express and reproduce recombinant proteins more quickly than is possible using traditional protein expression methods, because there is no need to transform, transfect, or culture cells in order to analyze proteins of interest.

We have optimized several cell-free expression systems for the rapid synthesis of recombinant proteins, utilizing bacterial, rabbit reticulocyte, and human derived lysate systems. The bacterial systems are ideal for producing high protein yield, while the mammalian-based systems are more likely to produce proteins with native posttranslational modifications. The human derived proteins are typically full-length and functionally active, with higher yield than is obtained using rabbit reticulocyte lysates. For membrane-bound proteins, we include a lipid bilayer with protein scaffolding for expression with our MembraneMax Protein Expression System.

Comparison of cell-free protein expression systems

 E. coliRabbit reticulocyteHeLa
YieldHighLowMedium-high
Protein modificationsNoneLimited glycosylationGlycosylation and phosphorylation
Recommended for high MW proteinsNoNoYes
Produces functional proteinsPossiblePossibleYes
CommentsRobust systemFlexible systemHigher protein yield per reaction
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See bacterial cell-free expression products

See mammalian cell-free expression products


Featured cell-free protein expression products

Efficiently translate in vitro-synthesized transcripts, poly(A) RNA, and total RNA, including difficult-to-translate RNAs with high protein yield, biological activity, and consistent performance. 

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For Research Use Only. Not for use in diagnostic procedures.