Streamlined Gene-to-Structure Workflow
The success of a cryo-EM experiment is highly dependent on the quality of the protein.
Obtaining a high-resolution protein structure can be complicated by aggregation, the use of incompatible buffers, or significant inter- or intra- domain flexibility.
NIS has acquired Proteos, a U.S.-based protein production CRO committed to providing high-quality recombinant protein production services, including antibody production, and protein expression & purification.
Custom Protein Production Services
Proteos offers:
- Mammalian Cell Expression (HEK293 or CHO) - Up to 60 L per batch
- Bacterial Expression (E. coli) - Up to 40 L per batch
- Insect Cell Expression (Baculovirus infected Sf9 or Tni) - Up to 60 L per batch
- Antibody Production & Purification - Full-length IgG, fragments, fusion proteins
- Protein Purification Services - Classical & affinity chromatography, comprehensive protein analytics

Target Classes Solved at NIS
Unlock the Full Potential of Your Gene-to-Structure Workflow
Proteos’s US-based team works with you to deliver customized, results-driven solutions from expression to purification. Since 2003, Proteos has delivered dependable, high-quality protein production services.
Skilled scientists work with you to provide collaborative, flexible project plans, and communicate with you every step of the way.
Comprehensive recombinant protein production services include mammalian cell expression, baculovirus mediated expression, E. coli expression, as well as antibody production and assay services.
Start your cryo-EM projects with structure-grade protein.