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Ada Yonath

Israeli chemist (1939–2026) From Wikipedia, the free encyclopedia

Ada E. Yonath (Hebrew: עדה יונת, pronounced [ˈada joˈnat]; 22 June 1939 – 31 August 2026) was an Israeli crystallographer and Nobel laureate in Chemistry, best known for her pioneering work on the structure of ribosomes. She was the director of the Helen and Milton A. Kimmelman Center for Biomolecular Structure and Assembly of the Weizmann Institute of Science.

Born
Ada Lifshitz

(1939-06-22)22 June 1939
Died31 August 2026(2026-08-31) (aged 87)
CitizenshipIsraeli
Education
Quick facts Born, Died ...
Ada E. Yonath
עדה יונת
Born
Ada Lifshitz

(1939-06-22)22 June 1939
Died31 August 2026(2026-08-31) (aged 87)
CitizenshipIsraeli
Education
Known forCryo bio-crystallography
AwardsHarvey Prize (2002)
Wolf Prize in Chemistry (2006)
L'Oréal-UNESCO Award for Women in Science (2008)
Albert Einstein World Award of Science (2008)
Nobel Prize in Chemistry (2009)
Scientific career
FieldsCrystallography
WorkplacesWeizmann Institute of Science
University of Chicago
Wolfie Traub, F. Albert Cotton
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In 2009, Yonath received the Nobel Prize in Chemistry along with Venkatraman Ramakrishnan and Thomas A. Steitz for her studies on the structure and function of the ribosome, becoming the first Israeli woman to win the Nobel Prize out of ten Israeli Nobel laureates,[1] the first woman from the Middle East to win a Nobel prize in the sciences,[2] and the first woman in 45 years to win the Nobel Prize for Chemistry.[3]

Early life

Ada Lifshitz (later Yonath)[4] was born in the Geula quarter of Jerusalem on 22 June 1939.[5][6] Her parents, Hillel and Esther Lifshitz, were Zionist Jews who had immigrated to the British Mandate of Palestine (now Israel) from Zduńska Wola, Poland in 1933 before the establishment of Israel.[7] Her father was a rabbi and came from a rabbinical family. They settled in Jerusalem and ran a grocery, but found it difficult to make ends meet. They lived in cramped quarters with several other families, and Yonath remembers "books" being the only thing she had to keep her occupied.[8] Despite their poverty, her parents sent her to school in the upscale Beit HaKerem neighborhood to assure her a good education. When her father died at the age of 42, the family moved to Tel Aviv.[9]

Education

Yonath was accepted to Tichon Hadash high school although her mother could not pay the tuition. She gave math lessons to students in return.[10] As a youngster, she says she was inspired by the Polish and naturalized-French scientist Marie Curie.[11] However, she stresses that Curie, whom she as a child was fascinated by after reading her biography, was not her "role model".[12] She returned to Jerusalem for college, graduating from the Hebrew University of Jerusalem with a bachelor's degree in chemistry in 1962, and a master's degree in biochemistry in 1964. In 1968, she obtained her PhD from the Weizmann Institute of Science for X-ray crystallographic studies on the structure of collagen, with Wolfie Traub as her PhD advisor.[13][14][15]

Scientific career

Ada Yonath at the Weizmann Institute of Science

Yonath accepted postdoctoral positions at Carnegie Mellon University (1969) and MIT (1970).[16] While a postdoctoral researcher at MIT she spent some time in the laboratory of subsequent 1976 chemistry Nobel Prize winner William N. Lipscomb, Jr. of Harvard University where she was inspired to pursue very large structures.[17]

In 1970, she established what was for nearly a decade the only protein crystallography laboratory in Israel. Then, from 1979 to 1984 she was a group leader with Heinz-Günter Wittmann at the Max Planck Institute for Molecular Genetics in Berlin. She was a visiting professor at the University of Chicago in 1977–78.[18] She headed a Max-Planck Institute Research Unit at DESY in Hamburg, Germany (1986–2004) in parallel to her research activities at the Weizmann Institute.[19]

She focused on the mechanisms underlying protein biosynthesis, by ribosomal crystallography, a research line she pioneered over 20 years ago despite considerable skepticism of the international scientific community.[20] Ribosomes translate RNA into protein and because they have slightly different structures in microbes, when compared to eukaryotes, such as human cells, they are often a target for antibiotics. In 1993, she visualized the path taken by the nascent proteins, namely the ribosomal tunnel, and recently revealed the dynamics elements enabling its involvement in elongation arrest, gating, intra-cellular regulation and nascent chain trafficking into their folding space.[21]

In 2000 and 2001, she determined the complete high-resolution structures of both ribosomal subunits and discovered within the otherwise asymmetric ribosome, the universal symmetrical region that provides the framework and navigates the process of polypeptide polymerization. Consequently, she showed that the ribosome is a ribozyme that places its substrates in stereochemistry suitable for peptide bond formation and for substrate-mediated catalysis.[22]

Additionally, Yonath elucidated the modes of action of over twenty different antibiotics targeting the ribosome, illuminated mechanisms of drug resistance and synergism, deciphered the structural basis for antibiotic selectivity and showed how it plays a key role in clinical usefulness and therapeutic effectiveness, thus paving the way for structure-based drug design.[23]

For enabling ribosomal crystallography Yonath introduced a novel technique, cryo bio-crystallography, which became routine in structural biology and allowed intricate projects otherwise considered formidable.[24]

At the Weizmann Institute, Yonath was the director of the Martin S. and Helen Kimmel Professorial Chair.[25]

Personal life and death

She had one daughter, Hagit Yonath, a doctor at Sheba Medical Center, and a granddaughter, Noa.[26] Yonath was the cousin of anti-occupation activist Ruchama Marton.[27]

Yonath died on 31 August 2026, at the age of 87.[28][29]

Awards and recognition

Telephone interview with Ada Yonath during the announcement of the Nobel Prize

Yonath was a member of the United States National Academy of Sciences; the American Academy of Arts and Sciences; the Israel Academy of Sciences and Humanities; the European Academy of Sciences and Art and the European Molecular Biology Organization.[30]

On 18 October 2014, Yonath was named an ordinary member of the Pontifical Academy of Sciences by Pope Francis.[31]

Her awards and honors included the following:

See also

References

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