image: This "action shot" reveals the motion of the small ribosomal subunit, depicted by difference vectors, during ratcheting. Ratcheting is required to move the tRNAs through the ribosome "assembly line" as proteins are made. For more information, please see Figure 1 in the manuscript. This image relates to an article that appeared in the May 20, 2011, issue of Science, published by AAAS. The study, by Dr. J.A. Dunkle at University of California at Berkeley and colleagues, was titled, "Structures of the Bacterial Ribosome in Classical and Hybrid States of tRNA Binding." view more
Credit: Image courtesy of <i>Science/</i>AAAS