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UC Santa Cruz scientists have for the first time taken a detailed picture, using x-ray crystallography, of a complete ribosome, the small cellular component which translates genetic information into proteins. The bacterial ribosome is composed of three different RNA molecules and more than 50 different proteins arranged in two major subunits, which join together to form the complete ribosome. During protein synthesis, the ribosome binds transfer RNA molecules in three different sites. In this image of the ribosome with transfer RNAs in all three binding sites, the large subunit is gray, the small subunit is violet, and the three transfer RNAs are green, blue, and red.
reported by: Cate et al., in Science, 24 September 1999