Proteos

Proteos is an established, US-based contract service organization providing recombinant protein and antibody production to the life sciences industry. Leveraging decades of combined scientific expertise, the company offers end-to-end services from construct design to purification and analytics across multiple expression platforms. Its recent acquisition by NanoImaging Services (NIS) enhances its capabilities and positions it within a broader structural biology service ecosystem, aiming to provide integrated solutions from protein production to cryo-EM structure determination.

Multi-platform recombinant protein expression and purification services utilizing mammalian, insect (baculovirus), and bacterial (E. coli) cell systems, integrated with protein analytics and, post-acquisition, cryo-EM structural biology capabilities.

Proteos competes in the crowded protein production CRO/CDMO space against large global players (e.g., Thermo Fisher, Lonza) and many specialized labs. Its primary differentiators are its US-only labs, deep scientific expertise, high client retention, and its unique positioning as part of a cryo-EM service group post-acquisition.