Papers
11
Total Citations
172
H-Index
8
About
Stephen R. Hughes is a pioneering researcher at the intersection of synthetic biology, bioenergy, and laboratory automation, whose work has fundamentally advanced the development of microbial systems for cellulosic ethanol production. Based at the USDA Agricultural Research Service, Hughes has dedicated his career to engineering yeast strains capable of fermenting the pentose sugars found in lignocellulosic biomass — a critical bottleneck in making fuel ethanol commercially viable from agricultural waste. One of Hughes's most distinctive contributions is the development of high-throughput robotic platforms for functional proteomics, enabling the rapid construction, mutagenesis, and screening of gene libraries at a scale previously unachievable manually. His 2006 paper on automated cellulase F mutant screening (35 citations) and his 2011 robotic molecular biology platform design (18 citations) exemplify this systems-level approach. He has applied these tools to engineer improved strains of *Saccharomyces cerevisiae*, *Kluyveromyces marxianus*, and *Scheffersomyces stipitis* for enhanced sugar utilization and ethanol yield. His three-plasmid SUMO yeast expression system (29 citations) and automated UV-C mutagenesis protocols further demonstrate the breadth and ingenuity of his contributions to industrial biotechnology.
Research Focus
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