Study of the secondary and tertiary structure of ribosomal protein S7 from Escherichia coli in solution

Selection and characterization of RNA aptamers that detect a quaternary structure for ribosomal protein S7

“…In contrast with the above results, neutron scattering showed that S7 has a globular shape with a radius of gyration of 14.5 Å [104]. Circular dichroism revealed that the secondary structure of S7 is composed of 53% α-helices and 41-64% of β-sheets [105]. Proton NMR provided evidence of a tertiary structure, demonstrating the spatial proximity of many apolar aliphatic residues to aromatic residues.…”