Ada Yonath is an Israeli chemist and the winner of the 2009 Nobel Prize for Chemistry for having shown what the ribosome looks like and how it functions at the atomic level. Yonath is one of 10 Israeli winners of a Nobel Prize, and the only woman. She is currently the director of the Helen and Milton A. Kimmelman Centre for Biomolecular Structure and Assembly of the Weizmann Institute of Science.