The crystallization of ribsomal proteins from the 50 S subunit of the Escherichia coli and Bacillus stearothermophilus ribosome.

The authors crystallized fragments of the 50S subunit of a thermophile bacterium’s ribosome to 3 angstroms resolution. Order of authorship in the original publication: Appelt, Dyck, et al., Yonath. Digital facsimile from jbc.org at this link.

In 2009 Yonath shared the Nobel Prize in Chemistry with Ventatraman Ramakrishnan and Thomas Steitz "for studies of the structure and function of the ribosome."

(Thanks to Juan Weiss for this reference and its interpretation.)