Fitting of the gp9 hexameric structure into a cryo-electron microscopy (cryo-EM) map of the tail (EMDB entry 1420) unambiguously places the tip β-domains at the distal end of the tail and the ...

Figure 1: a, Secondary structure of E. coli 4.5S RNA and its interaction site with Ffh (shown in gray as two-domain model). Figure 2: NMR spectra of exchangeable protons of the SRP 28-mer. Some ...