Cryogenic electron microscopy at resolutions of 2.9 to 3.1 Å has revealed that three bacterial non-coding RNAs can fold into large, symmetric multistrand assemblies without any protein assistance, researchers report in an article preview in Nature. Using cryogenic electron microscopy at resolutions of 2.9 Å (OLE), 3.1 Å (ROOL), and 3.0 Å (GOLLD), the researchers…