Phil Mitchell

Dr. Phil Mitchell is a Lecturer at the School of Biosciences, University of Sheffield, where he has worked since 2004. His research focuses on RNA quality control mechanisms in eukaryotic cells, particularly the molecular functions of the exosome ribonuclease complex and its associated enzymes like Rex1. His work has direct implications for understanding neurodegenerative diseases and autoimmunity linked to exosome mutations.

• Current research explores exosome substrate pathways and functional redundancy with Rex1
• Investigates C1D domain protein interactions in RNA processing
• Develops CHO cell expression systems for biopharmaceutical applications

Research Themes:

• Ribonuclease substrate recognition
• Regulation of RNA degradation pathways
• Structural-functional analysis of exosome components
• Link between RNA processing defects and human disease

Scientific Contributions:

• Co-discoverer of the exosome complex (1997)
• Key work on exosome cofactors like Rrp47 (2003-2013)
• Elucidated Rex1's compensatory role in exosome deficiency (2014)
• Developed Drosophila models for exosome-related diseases (2020)

Academic Service:

• Associate Editor, International Journal of Biochemistry and Molecular Biology (2011-present)
• EMBO Research Fellow (1993-1996)

Teaching: Module coordinator for advanced molecular biology courses including MBB405 Advanced Research Topics and MBB267 Genes, Genomes and Chromosomes. Also teaches RNA biology in MBB325 The RNA World.