mk2 has developed a disruptive platform technology that enables the purification of recombinantly produced peptides & proteins at low-costs and high-purity. The process is completely chromatography- and resin-free and is performed in an aqueous environment. This makes the process highly scalable and cost-effective allowing for easy and efficient large-scale production.
How does it work in principle?
The purification process involves an engineered proprietary fusion protein, containing the product either at the N-or at the C-terminus to best meet the technical specifications of the product of interest. The fusion protein consists of a cleavage domain and a non-affinity-based purification tag. At first the fusion protein is isolated from the host cell impurities by employing the purification tag. Post this, the product of interest is cleaved off the tag, and the tag is removed using the same principles, allowing for the protein to remain in solution.
| Conventional downstream process
Crude Product
Chromatography
Purified product
Characteristics
01
Low-throughput processing
02
Lack of scalability
03
Low yields/recoveries
04
Expensive & toxic materials
| Conventional downstream process
Crude Product
Chromatography
Purified product
Characteristics
01
Low-throughput processing
02
Lack of scalability
03
Low yields/recoveries
04
Expensive & toxic materials
| mk2 downstream process
Crude Product
Stirred tanks, filtration & water-based buffers
Purified product
Characteristics
01
High-throughput processing
02
Fully scalable process design
03
High yields/recoveries
04
No expensive or toxic materials
Characteristics
01
High-throughput processing
02
Fully scalable process design
03
High yields/recoveries
04
No expensive or toxic materials
What is unique about it and how does it add value?
– No resins or chromatographic steps involved
– Clean water-based process, without the use of organic solvents or special chemicals
– High purity and yields obtained typically outperforming conventional approaches
– Enables a large cost cut down by up to 5 orders of magnitudes
– Non-enzymatic, non-intein based
– Allows for the production and purification of peptides & proteins above ~15 aa without an upper limit
– Compatible with products of various physico-chemical properties e. g. charge, pI, polarity etc.
– High potential for authentic termini (N- and C-terminus)
– Compatible with various host expression systems and pathways
– Production at large scales requires no high-end equipment