The remaining mass consists of a number of proteins — nearly 60 in prokaryotic cells and over 80 in eukaryotic cells. Within the ribosome, the rRNA molecules direct the catalytic steps of ...

Shah and colleagues take advantage of the presence of maternal and somatic ribosomes in zebrafish and confirm their differential expression during development. The authors convincingly show that ...

In contrast, eukaryotic cells have 80S ribosomes, which are larger and more complex and also consist of two subunits: a 40S (small) subunit and a 60S (large) subunit. The 40S subunit contains an ...