Ribosome assembly revealed by cryo-EM

Ribosome assembly is a remarkably complex cellular process. In the yeast large subunit (60S) alone, it requires the ordered association and folding of 3 rRNAs and 46 r-proteins as the nascent ribosomes move from the nucleolus, to the nucleus, and finally to the cytoplasm.

Addition by subtraction

Posttranslational modifications (PTMs) are responsible for some of the most exotic ribosomally synthesized peptide backbones in biology.