Biochemistry · 1995 · 121 citations · 52 references
Life SciencesMolecular BiologyProtein TranslationRna BiologyStructural BiologyLigand BindingRibonucleic Acid (Rna) ChemistryRibosome FunctionRna StructureRna-binding ProteinsRna-protein InteractionsAffinity LigandsRibosomal Rna-protein InteractionsRibosomal TargetsRibosome Binding Site DesignRibosome-associated Protein-rna InteractionsRibosome-associated Rna-binding ProteinsSynthetic Ribosome Binding Sites
High-affinity RNA ligands were generated against intact 30S ribosomes, S1-depleted 30S ribosomes, and purified ribosomal protein S1. Sequence analysis indicated two classes of ligand: unstructured RNAs containing a Shine-Dalgarno sequence and structured RNAs containing a pseudoknot. The Shine-Dalgarno-containing ligands were generated against S1-depleted 30S ribosomes but, surprisingly, not against intact 30S ribosomes or ribosomal protein S1. In contrast, pseudoknot-containing ligands were generated against intact ribosomes as well as purified S1 protein. The two classes of ligand exhibited specificity for their respective targets, as well as conserved sequence and secondary structure reminiscent of naturally occurring, cis-acting mRNA elements.
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Joan A. Steitz, Karen S. Jakes · Proceedings of the National Academy of Sciences · 1975 · 701 citations · Full text