Contents

22 July 2011
Vol 333, Issue 6041

About The Cover

Cover image expansion

COVER Schematic representation of one- and two-dimensional RNA nanostructures, 100 to 200 nanometers in length, built from single-stranded RNA building blocks programmed to self-assemble within bacterial cells. On page 470, Delebecque et al. describe the design and use of these assemblies as scaffolds to spatially organize a hydrogen-producing biosynthetic pathway. Image: Krista Shapton (Blot Media) and Faisal Aldaye (Harvard Medical School)