Stefan Simić, Marco Cespugli, Michael C Hetmann, Ursula Kahler, Valentina Jurkaš, Marikagiusy Di Giacomo, Maria Elena Russo, Antonio Marzocchella, Christian C Gruber, Bettina M Nestl, Christoph K Winkler, Wolfgang Kroutil
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Cavity-Based Discovery of New Fatty Acid Photodecarboxylases.
Light-dependent fatty acid photodecarboxylases (FAPs) hold significant potential for biotechnology, due to their capability to produce alka(e)nes directly from the corresponding (un)saturated natural fatty acids requiring light as the only reagent. This study expands the family of FAPs through cavity-based enzyme discovery methods. Thirty enzyme candidates with potential photodecarboxylation activity were identified by matching the cavities of four related template structures against the Protein Data Bank's flavoproteins, a library of proteins identified via the Foldseek Search Server, and homology models of sequences resulting from BLAST. Subsequent docking experiments narrowed this library to ten promising enzymes, which were expressed and assessed in vitro, identifying four photodecarboxylases. Out of these enzymes, the GMC oxidoreductase from Coccomyxa sp. Obi (CoFAP) was characterized in detail, which revealed high activity in the decarboxylation reactions of palmitic acid and octanoic acid and a broad pH tolerance (pH 6.5-9.5).
期刊介绍:
ChemBioChem (Impact Factor 2018: 2.641) publishes important breakthroughs across all areas at the interface of chemistry and biology, including the fields of chemical biology, bioorganic chemistry, bioinorganic chemistry, synthetic biology, biocatalysis, bionanotechnology, and biomaterials. It is published on behalf of Chemistry Europe, an association of 16 European chemical societies, and supported by the Asian Chemical Editorial Society (ACES).