Nucleolin RBD12-RNA
Stem-Loop Complex

F. H. T. Allain, P. Bouvet, T. Dieckmann, and J. Feigon: "Molecular basis of sequence-specific recognition of pre-ribosomal RNA by nucleolin", EMBO J. 19, 6870-6881 (2000). [abstract]

PDB Code: 1FJE

Stick and ribbon (left) and surface representation (right) of the nucleolin RBD12-RNA stem-loop complex showing how the RNA loop is 'sandwiched' between the two RBDs.