Relying on the advanced engineering platform, SMARTBOX will develop the one-enzyme conversion of HMF into FDCA and intermediates, and the one-enzyme conversion of lignin monomers into a potential biobased building block for polycarbonates and vanillin. By adopting a 1-enzyme FDCA production process, the associated production costs and carbon footprint are expected to decrease significantly compared to SOTA chemical oxidation methods. The unique feature of SMARTBOX is that reductive catalytic fractionation (RCF) will be used to selectively produce specific lignin monomers from biomass in near theoretical yields. The structural similarity of the resulting monomers with the SMARTBOX building blocks allows the development of high-yielding processes with only one enzyme. Due to the smart combination between oxidative biocatalysis and RCF, the production of added-value bio-aromatics will proceed with higher yields than the state of the art.