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PERSPECTIVE
1 Department of Biochemistry, Division of Nucleic Acid Enzymology, University of Medicine and Dentistry of New Jersey-Robert Wood Johnson Medical School, Piscataway, New Jersey 08854, USA; 2 Department of Molecular Genetics, Microbiology and Immunology, University of Medicine and Dentistry of New Jersey-Robert Wood Johnson Medical School, Piscataway, New Jersey 08854, USA
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Transcription and translation are coordinated events in all organisms. In prokaryotes, the process that couples these two events is clear: The ribosome begins translation of the nascent mRNA while the DNA template is still being transcribed. Indeed, cotranscriptional protein synthesis underlies key regulatory mechanisms in bacteria, including attenuation, the mechanism that regulates RNA polymerase processivity in response to ribosome movement along the mRNA. But how is transcription coordinated with translation in eukaryotic organisms, where mRNA is synthesized in the nucleus and protein synthesis occurs in the cytoplasm? Although these two events are spatially distinct, separated by the nuclear envelope, efficient
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Genes & Dev. 2007 21: 1409-1421.