Study of the structural dynamics of the E. coli 70S ribosome using real space refinement
Gao, H., Sengupta, J., Valle, M., Korostelev, A., Eswar, N., Stagg, S.M., Van Roey, P., Agrawal, R.K., Harvey, S.T., Sali, A., Chapman, M.S., Frank, J.(2003) Cell 113: 789-801
- PubMed: 12809609 Search on PubMed
- DOI: https://doi.org/10.1016/s0092-8674(03)00427-6
- Primary Citation Related Structures: 
4V47, 4V48 - PubMed Abstract: 
Cryo-EM density maps showing the 70S ribosome of E. coli in two different functional states related by a ratchet-like motion were analyzed using real-space refinement. Comparison of the two resulting atomic models shows that the ribosome changes from a compact structure to a looser one, coupled with the rearrangement of many of the proteins. Furthermore, in contrast to the unchanged inter-subunit bridges formed wholly by RNA, the bridges involving proteins undergo large conformational changes following the ratchet-like motion, suggesting an important role of ribosomal proteins in facilitating the dynamics of translation.
- Howard Hughes Medical Institute, Health Research, Inc, Empire State Plaza, Albany, NY 12201, USA.
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