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. 2017 May 24;12(5):e0177972. doi: 10.1371/journal.pone.0177972

Fig 2. Cryo-EM structure of the ribosome from polysomes (EMD-9533).

Fig 2

Cryo-EM structure reconstructed from the images of purified E. coli endogenous polysomes. Sixty-three percent of the total particles was used for the reconstruction. Reconstructed ribosome is in the unrotated state containing densities in the P site, E site and mRNA path. Color code: 50S, aqua; 30S, light brown; tRNAs and mRNA, green. Landmarks of ribosome: CP, central protuberance; L1, L1 stalk; St, L7/12 stalk; Sb, L7/12 stalk base; hd, head; bk, beak; pt, platform.