Kate Stoll ’04 reflects on her thesis work on ScaR proteins with Arthur Glasfeld, Margret Geselbracht Professor of Chemistry, and her fascination with proteins, the “tiny machines that do all the work in your body.” This was Frank’s first interview for the podcast and took place in-person in January 2020. Kate’s thesis title: “The DNA and metal ion specificity of ScaR, the Streptococcal cell adhesion protein regulator of ‘S. gordonii.'”