Ada Yonath

Ada Yonath was born in 1939 in the British Mandate of Palestine (now Israel) to a poor Jewish family. Her father, a rabbi, died when she was young, and the family moved to Jerusalem. Despite financial hardship, she excelled academically and earned a bachelor's degree in chemistry from the Hebrew University of Jerusalem in 1962, followed by a master's in biochemistry in 1964 and a PhD in X-ray crystallography from the Weizmann Institute of Science in 1968.¹

Yonath's major contribution was determining the high-resolution structure of the ribosome, a complex of RNA and proteins that translates genetic information into proteins. In the 1980s, she pioneered the use of cryo-crystallography to stabilize ribosomes from extremophilic bacteria, which are more robust and yield better crystals. Her team produced the first X-ray crystal structure of a ribosome subunit in 2000, and in 2009 she shared the Nobel Prize in Chemistry with Venki Ramakrishnan and Thomas A. Steitz for their independent work on ribosomal structure and function.²

The atomic-level maps of ribosomes have been crucial for understanding how antibiotics bind to bacterial ribosomes and inhibit protein synthesis. Yonath's structures revealed the binding sites of many clinically used antibiotics, enabling the rational design of new drugs that can overcome resistance. Her work also illuminated the evolution of the ribosome, showing that its core is ancient and conserved across all domains of life.³

Beyond her Nobel-winning research, Yonath has been a vocal advocate for women in science, often speaking about the challenges she faced as a female scientist in a male-dominated field. She also led the establishment of the Israel Structural Proteomics Center at the Weizmann Institute. In 2020, she was elected to the Pontifical Academy of Sciences, a rare honor for a Jewish scientist. Yonath has also explored the origins of life, proposing that the ribosome's structure hints at an early RNA world.

Cryo-crystallography

A technique that freezes crystals to very low temperatures to reduce radiation damage during X-ray diffraction.

Ribosome

A cellular organelle composed of RNA and proteins that synthesizes proteins by translating messenger RNA.