Darwin has dedicated her career to studying infectious bacteria, in particular, Mycobacterium tuberculosis, the bacterium responsible for tuberculosis in humans. Darwin focuses on the characterization of the M. tuberculosisproteasome, a protease complex that is key to lethal infections by M. tuberculosis and helps protect the bacterium from the innate immune defenses of the host. While characterizing the mycobacterial proteasome, Darwin's group identified the first known protein-on-protein, post-translational modification in prokaryotes called Pup (prokaryotic ubiquitin-like protein). While functionally similar to eukaryotic ubiquitin, Pup's distinct biochemistry makes it a potentially attractive drug target.
Darwin and her collaborators are currently investigating the extent to which host-derived aldehydes may contribute to infection control.
Honors and awards
2006 Interscience Conference on Antimicrobial Agents and Chemotherapy Young Investigator Award
2009 Awardee, Burroughs Wellcome Fund Investigators in the Pathogenesis of Infectious Disease
2010 Awardee, Irma T. Hirschl Charitable Trust
2012 Kavli / National Academy of Sciences Fellow
2016 Fellow, American Academy of Microbiology
2023 NIH Director's Wednesday Afternoon Lecture Series (WALS), Bethesda, MD