title: Trapping the ribosome to control gene expression.
abstract: Protein synthesis is often regulated by structured mRNAs that interact with ribosomes. In this issue of Cell, Marzi et al. (2007) provide insights into the autoregulation of protein S15 by visualizing the folded repressor mRNA on the ribosome stalled in the preinitiation state. These results have implications for our understanding of the mechanism of translation initiation in general.
authors: Institute of Molecular Biology and Biophysics, ETH Zurich, CH-8092 Zurich, Switzerland.
authors: Daniel
authors: D
authors: Boehringer
authors: Nenad
authors: N
authors: Ban
mesh_terms: D020121:5' Untranslated Regions; D001665:Binding Sites; D020285:Cryoelectron Microscopy; D004926:Escherichia coli / Q000235:genetics* / Q000378:metabolism; D029968:Escherichia coli Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D015964:Gene Expression Regulation, Bacterial; D008958:Models, Molecular; D009154:Mutation; D009690:Nucleic Acid Conformation; D010442:Peptide Chain Initiation, Translational; D011485:Protein Binding; D011487:Protein Conformation; D012329:RNA, Bacterial / Q000737:chemistry / Q000378:metabolism*; D012333:RNA, Messenger / Q000378:metabolism*; D012343:RNA, Transfer / Q000378:metabolism; D038621:Regulatory Sequences, Ribonucleic Acid; D012269:Ribosomal Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D012270:Ribosomes / Q000737:chemistry / Q000378:metabolism* / Q000648:ultrastructure; D013997:Time Factors
chemical_list: D020121:5' Untranslated Regions; D029968:Escherichia coli Proteins; D012329:RNA, Bacterial; D012333:RNA, Messenger; D038621:Regulatory Sequences, Ribonucleic Acid; D012269:Ribosomal Proteins; C036004:ribosomal protein S15; D012343:RNA, Transfer