||Bacteria Escherichia coli
||Brandt F, Etchells SA, Ortiz JO, Elcock AH, Hartl FU, Baumeister W. The native 3D organization of bacterial polysomes. Cell. 2009 Jan 23 136(2):261-71. supplementary online material p.6 top paragraphPubMed ID19167328
||"A novel optical method was built to control the position of the laser trap along the microscope optical axis at 2 nm resolution, facilitating measurement of the force-extension relationship for poly(U)."
||"This leads to a total estimate of 81 nucleotides, 54 linking the two ribosomes and 27 nucleotides inside the ribosomes as observed in a T. thermophilus crystal structure (Yusupova et al., 2006). The resulting difference in length
of the nascent chains is therefore estimated to be 27 aa’s..."