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Insights into 6‐Methylsalicylic Acid Bio‐assembly by Using Chemical Probes |
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| Authors: | James S. Parascandolo Dr. Judith Havemann Helen K. Potter Dr. Fanglu Huang Dr. Elena Riva Jack Connolly Dr. Ina Wilkening Dr. Lijiang Song Prof. Peter F. Leadlay Dr. Manuela Tosin |
| Affiliation: | 1. Department of Chemistry, University of Warwick, Coventry, UK;2. Department of Chemistry, University of Cambridge, Cambridge, UK;3. Department of Biochemistry, University of Cambridge, Cambridge, UK;4. School of Biosciences, The University of Birmingham, Birmingham, UK |
| Abstract: | Chemical probes capable of reacting with KS (ketosynthase)‐bound biosynthetic intermediates were utilized for the investigation of the model type I iterative polyketide synthase 6‐methylsalicylic acid synthase (6‐MSAS) in vivo and in vitro. From the fermentation of fungal and bacterial 6‐MSAS hosts in the presence of chain termination probes, a full range of biosynthetic intermediates was isolated and characterized for the first time. Meanwhile, in vitro studies of recombinant 6‐MSA synthases with both nonhydrolyzable and hydrolyzable substrate mimics have provided additional insights into substrate recognition, providing the basis for further exploration of the enzyme catalytic activities. |
| Keywords: | chemical probes dehydratase iterative polyketide catalysis |