||Bacteria Escherichia coli
||Lafontaine DL, Tollervey D. The function and synthesis of ribosomes. Nat Rev Mol Cell Biol. 2001 Jul2 (7):514-20 p.514 left column top paragraphPubMed ID11433365
||A list of primary sources is given in the reference
||P.514 left column top paragraph: "The bacterial (and archaeal) small subunit contains the 16S rRNA and 21 r-proteins (Escherichia coli), whereas the eukaryotic small subunit contains the 18S rRNA and 32 r-proteins (Saccharomyces cerevisiae, although the numbers vary between species). The bacterial large subunit contains the 5S and 23S rRNAs and 34 r-proteins (E. coli), with the eukaryotic large subunit containing the 5S, 5.8S and 25S/28S rRNAs and 46 r-proteins (S. cerevisiae again, the exact numbers vary between species)."
||Ron Milo, Paul Jorgensen, Mike Springer