Resolution: 3.8 Descriptor: Interactions and Dynamics of the Shine-Dalgarno Helix in the 70S Ribosome. This file, 1VSP, contains the 50S ribosome subunit. 30S ribosome subunit is in the file 2QNH Experimental technique: X-RAY DIFFRACTION Release Date: 11/13/2007 Author: Korostelev, A., Trakhanov, S., Asahara, H., Laurberg, M., Noller, H.F. Biological source: Thermus thermophilus