In response to the imperative global challenges posed by climate change and the urgent need for environmental sustainability, WP3 is committed to pioneering innovative solutions that reduce carbon emissions and diminish dependence on fossil fuels. In this context, WP3 aims at harnessing biocatalysts to convert carbon dioxide into biodegradable functional polymers. This project not only seeks to establish a novel CO₂ fixation pathway but also endeavors to optimize and conduct initial in vivo tests on a new enzyme cascade for converting CO₂ into dihydroxyacetone (DHA). The resulting DHA will be utilized in the production of biocompatible polymers, providing sustainable alternatives to traditional fossil-based plastics.