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Protein Expression Systems & Vectors

Protein Expression Invitrogen offers a multitude of expression systems that are easy to use and deliver high yields of protein for every downstream application.

Mammalian Expression

Constitutive and inducible mammalian expression systems are ideal choices to produce proteins with proper folding and post-translational modifications. Discover Invitrogen's wide range of mammalian expression systems for your research.


Insect Expression

Baculovirus expression systems are powerful and versatile systems for high-level, recombinant protein expression in insect cells.


Bacterial Expression

Protein expression in E coli is simple, easy and fast while delivering high yields, making the most popular protein expression technique.


Yeast Expression

Offering the same advantages as E. coli expression (high yields, easy scale-up, etc.), with expression in a eukaryotic host instead (for proper protein folding and post-translational modifications), the Pichia system is an ideal choice.


Cell-Free (in vitro) Expression

Cell-Free expression systems produce high yields of active protein at both small and large scales in 1 hour, saving time and effort.


Transfection & Selection

Effective reagents for gene delivery to introduce plasmid DNA, siRNA or RNAi duplexes, oligonucleotides, and RNA into eukaryotic cells.


Reporter Assays

You will find vectors, antibodies, reagents and kits for expressing and detecting a variety of reporter genes including glycosidases, Chloramphenicol Acetyltransferase (CAT), green fluorescent protein (GFP), β-lactamase,  luciferase, and β-gal, as well as Lumio™  and TC-FlAsH™ technology.