MarraBio has developed a series of proprietary engineered protein polymers that are able to mimic the action of bioactive proteins such as growth and adhesion factors. The polymers are highly stable, easy to use, animal free and can be produced at ultra low cost by bacterial fermentation at high yield. Moreover, modules with different bioactivies can be combined like a 'molecular Lego set'. We are targeting these polymers initially as replacements for reagents in the research market, with medium and longer term goals to apply them in the cultivated meat and cell therapy markets.