Size of 70s (intact) of ribosome

Value 21 nm
Organism Bacteria Escherichia coli
Reference Kaczanowska M, Rydén-Aulin M. Ribosome biogenesis and the translation process in Escherichia coli. Microbiol Mol Biol Rev. 2007 Sep71(3):p.478 right column 2nd paragraphPubMed ID17804668
Primary Source Schuwirth BS, Borovinskaya MA, Hau CW, Zhang W, Vila-Sanjurjo A, Holton JM, Cate JH. Structures of the bacterial ribosome at 3.5 A resolution. Science. 2005 Nov 4 310(5749):827-34.PubMed ID16272117
Method x-ray crystallography
Comments "Prokaryotic ribosomes sediment as 70S particles and are formed by two subunits, 30S and 50S. In E. coli, the 70S ribosome is a 210-Å particle that consists of roughly two-thirds RNA and one-third protein (primary source). The small subunit, 30S, is made of 16S rRNA (1,542 nt) and 21 ribosomal proteins (r-proteins), while the large subunit, 50S, is composed of two rRNAs, 23S (2,904 nt) and 5S (120 nt) rRNA, and 33 proteins (156)."
Entered by Uri M
ID 102320