The mk2 peptide & protein purification platform

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

Let's talk!

Contact our specialists for a brainstorming session. We are happy to answer any question!