Mn(2+) localization in hairpin 92 of the 23S ribosomal RNA (HP92) was obtained using W-band (95 GHz) DEER (double electron-electron resonance) distance measurements between the Mn(2+) ion and nitroxide spin labels on the RNA. It was found to be preferably situated in the minor groove of the double strand region close to the HP92 loop.

Correction for ‘Distance measurements between manganese(ii) and nitroxide spin-labels by DEER determine a binding site of Mn2+ in the HP92 loop of ribosomal RNA’ by Ilia Kaminker et al., Phys. Chem. Chem. Phys., 2015, 17, 15098–15102.