Antonina Roll-Mecak is a Senior Investigator in the Cell Biology and Biophysics Section at the National Institute of Neurological Disorders and Stroke (NINDS), with a joint appointment at NHLBI. She earned her Ph.D. from Rockefeller University and completed postdoctoral training at UCSF, where she identified spastin as a microtubule-severing enzyme. Her NIH laboratory investigates the “tubulin code” and its role in regulating microtubule function using interdisciplinary approaches spanning structural biology, biophysics, cell biology, and advanced imaging.