Ribosomes contain proteins that must themselves be made by ribosomes. A new study shows that splitting ribosomal protein content into many small, similarly sized units maximizes the efficiency of this synthesis, suggesting that ribosomal architecture has been shaped by evolutionary pressure to efficiently self-synthesize.
Hussmann, J. A., Osadnik, H., & Gross, C. A. (2017, August 21). Ribosomal Architecture: Constraints Imposed by the Need for Self-Production. Current Biology. Cell Press. https://doi.org/10.1016/j.cub.2017.06.080