Nobel Laureate Ada Yonath, Pioneer in Ribosome Research, Dies at 87

Professor Ada Yonath, a Nobel laureate in Chemistry and a leading Israeli scientist, has passed away at the age of 87. Yonath, a senior researcher at the Weizmann Institute of Science, dedicated her career to deciphering the structure and function of the ribosome, the cellular component responsible for protein synthesis.

Her extensive research laid the groundwork for understanding how antibiotic drugs bind to bacterial structures, paving the way for new medical treatments against antibiotic-resistant bacteria, a major challenge in modern medicine. The President of the Weizmann Institute, Professor Alon Chen, eulogized her as an "exceptional scientist" who pursued unconventional paths with determination and courage.

Yonath's early work in the late 1970s faced skepticism, as the scientific community doubted the feasibility of crystallizing ribosomes for X-ray crystallography. Despite numerous failed attempts worldwide, Yonath and her team succeeded in producing the first ribosome crystals in 1980 after approximately 25,000 trials. She later refined her methods, developing cryo-bio-crystallography, a technique using rapid freezing to preserve crystal integrity.

In 2000, her teams at the Weizmann Institute and the Max Planck Institute in Germany elucidated the complete three-dimensional structure of bacterial ribosome subunits, a discovery hailed by the journal Science as one of the top ten scientific achievements of the year. A year later, her research revealed how antibiotics attach to bacterial ribosomes and inhibit protein production, offering crucial insights into the resistance mechanisms of disease-causing bacteria.

Born in Jerusalem in 1939 to a modest family, Yonath worked from a young age to support her household after her father's early death. She earned her bachelor's and master's degrees from the Hebrew University and her doctorate from the Weizmann Institute in 1968. After postdoctoral studies in the U.S., she established Israel's first protein crystallography lab at the Weizmann Institute in 1970. She held numerous leadership positions, was a member of prestigious scientific academies, and received many awards, including the Israel Prize and the Wolf Prize, in addition to her Nobel Prize. She continued her research and collaborations until her final days.