Congratulations to Natalie Falco for receiving the prestigious NIH F31 fellowship from the National Institute of Allergy and Infectious Diseases (NIAID). Natalie is a fourth year graduate trainee in the Griffin lab, where she studies how chemical processes of our microbiota influence gut health. Her fellowship proposal entitled “Chemoenzymatic discovery of secreted microbial enzymes for engineered probiotics” aims to identify and exploit new ways to generate immune active glycopeptides that fortify the intestinal barrier and prevent leaky gut.