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The minimum PTC and associated proteins. The PTC rRNA backbone is displayed in gray, the catalytic Adenine of the active site is marked with an asterisk. The five closely associated ribosomal proteins’ globular domain backbones are in black and their extensions in color: L2 blue, L3 cyan, L4 red, L10e/L19 yellow, and L22 green. The coordinates are from the X-ray Archaeal LSU structure, 1JJ2.pdb.
