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Ada Yonath

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Adapted from the English Wikipedia article Ada Yonath, available under CC BY-SA 4.0Updated 10 August 2025
Ada E. Yonath
Born
Ada Lifshitz

(1939-06-22) June 22, 1939 (age 87)
Jerusalem, British Mandate Palestine
OccupationCrystallographer
Known forNobel Prize in Chemistry for work on ribosome structure
Notable workPioneering contributions to ribosome crystallography and antibiotic interactions

Ada E. Yonath (, born June 22, 1939) is an Israeli crystallographer and recipient of the Nobel Prize in Chemistry, celebrated for her pioneering contributions to understanding ribosome architecture. She serves as the director of the Helen and Milton A. Kimmelman Center for Biomolecular Structure and Assembly at the Weizmann Institute of Science.

In 2009, Yonath received the Nobel Prize in Chemistry together with Venkatraman Ramakrishnan and Thomas A. Steitz for their work on revealing the structure and operational mechanisms of the ribosome. She holds the distinction of being the first Israeli woman to win a Nobel Prize, the first female laureate from the Middle East in scientific fields, and the first woman in 45 years to be honored with the Nobel Prize in Chemistry.

Biography

Born Ada Lifshitz in Jerusalem's Geula neighborhood, she was raised by parents Hillel and Esther Lifshitz, Zionist immigrants who arrived in British Mandate Palestine from Zduńska Wola, Poland, in 1933. Her father, a rabbi from a lineage of rabbis, managed a grocery store in Jerusalem. Despite limited financial means and modest living quarters, her parents emphasized education by enrolling her in school within the affluent Beit HaKerem district. Following her father's passing at age 42, her family relocated to Tel Aviv.

To afford tuition at Tichon Hadash high school, Yonath supplemented her income by tutoring mathematics. Motivated by Marie Curie's example, she pursued higher education at Hebrew University of Jerusalem where she earned a bachelor's degree in chemistry in 1962 and a master's degree in biochemistry by 1964. She completed her doctorate at the Weizmann Institute of Science in 1968, conducting X-ray crystallography research on collagen under the mentorship of Wolfie Traub.

Yonath is a mother to one daughter, Hagit Yonath, a medical professional affiliated with Sheba Medical Center, and grandmother to Noa. Additionally, she is related as a cousin to Ruchama Marton, an activist opposing occupation.

Scientific career

Following her doctoral studies, Yonath undertook postdoctoral research appointments at Carnegie Mellon University in 1969 and MIT in 1970. During her brief tenure at MIT, she collaborated with William Lipscomb, Jr., later a Nobel laureate at Harvard University, which influenced her interest in large biomolecular assemblies.

In 1970, she established Israel’s only protein crystallography laboratory at that time, leading it for nearly ten years. Between 1979 and 1984, Yonath directed a research team at the Max Planck Institute for Molecular Genetics in Berlin and served as a visiting professor at the University of Chicago during 1977–78. From 1986 until 2004, she headed a Max Planck Research Unit located at DESY in Hamburg while maintaining her affiliation with the Weizmann Institute.

Yonath was instrumental in advancing ribosomal crystallography aimed at decoding protein synthesis processes despite initial doubts from peers. Ribosomes are responsible for translating RNA into proteins and exhibit structural differences between microorganisms and eukaryotic cells; these variations make them prime targets for antibiotic development. Between 2000 and 2001, she succeeded in determining high-resolution structures of both ribosomal subunits and identified a universally conserved symmetrical region essential for polypeptide chain formation. Her findings established that ribosomes act as ribozymes by catalyzing peptide bond formation through substrate-assisted mechanisms. In 1993, she charted the ribosomal exit tunnel utilized by emerging proteins and subsequently uncovered dynamic components that regulate elongation arrest, gating functions, control mechanisms, and protein folding pathways.

Her research also elucidated how more than twenty antibiotics interact with ribosomes, providing critical understanding of resistance phenomena, synergistic drug effects, and selective targeting—knowledge vital to enhancing clinical treatments and guiding structure-based pharmaceutical design.

To facilitate studies on ribosome crystallography, Yonath innovated cryo bio-crystallography techniques now widely adopted within structural biology for tackling complex molecular structures.

At the Weizmann Institute of Science, she holds the prestigious Martin S. and Helen Kimmel Professorial Chair.

Political Perspectives

She has called for the immediate and unconditional liberation of all Palestinian detainees, asserting that "detaining Palestinians fuels and sustains their incentive to attack Israel and its population ... once there are no prisoners left to free, the incentive to abduct soldiers will disappear".

Honors and Distinctions

Yonath holds memberships in several esteemed organizations such as the United States National Academy of Sciences, American Academy of Arts and Sciences, Israel Academy of Sciences and Humanities, European Academy of Sciences and Art, and European Molecular Biology Organization. In 2014, Pope Francis appointed her to the Pontifical Academy of Sciences.

Her major accolades include:

See also

External links

Related profiles

LL'Oréal-UNESCO For Women in Science AwardsGGeneviève AlmouzniBBeatriz Álvarez SannaMMarycelin Baba
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