| Reviews of Physiology, Biochemistry and Pharmacology 155 Contributor(s): Amara, Susan G. (Editor), Bamberg, Ernst (Editor), Grinstein, Sergio (Editor) |
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ISBN: 3642066437 ISBN-13: 9783642066436 Publisher: Springer OUR PRICE: $104.49 Product Type: Paperback - Other Formats Published: October 2010 |
| Additional Information |
| BISAC Categories: - Science | Life Sciences - Human Anatomy & Physiology - Medical | Biochemistry - Medical | Pharmacology |
| Dewey: 612.015 |
| Series: Reviews of Physiology, Biochemistry and Pharmacology |
| Physical Information: 0.18" H x 6.14" W x 9.21" (0.29 lbs) 80 pages |
| Descriptions, Reviews, Etc. |
| Publisher Description: The eukaryotic translation machinery must recognize the site on a messenger RNA (mRNA) where decoding should begin and where it should end. The selection of the translation start site is generally given by the ?rst AUG codon encoding the amino acid methionine. D- ing initiation soluble translation initiation factors (eukaryotic translation initiation factors eIFs] in eukaryotes and prokaryotic translation initiation factors IFs] in prokaryotes) bind the mRNA, deliver the initiator Met-tRNA, and assemble to form a complete 80S ribosome from the 40S and 60S subunits. By progressing along the mRNA in the 5 -to-3 direction the ribosome decodes the information and translates it into the polypeptide chain. During this process, repeated delivery of amino-acyl tRNA (aa-tRNA) to the ribosome, peptide bond formation, movement of the mRNA, and the growing peptidyl-tRNA is mediated by both soluble elongation factors (eukaryotic translation elongation factors eEFs] in euka- otes and prokaryotic translation elongation factors EFs] in prokaryotes) and the activity of the ribosome. The ?nal step in the translation process occurs when one of the three t- mination codons occupies the ribosomal A-site. Translation comes to an end and soluble release factors (eukaryotic translation termination factors eRFs] in eukaryotes and proka- otic translation termination factors RFs] in prokaryotes) facilitate hydrolytical release of the polypeptide chain (for recent reviews, see Inge-Vechtomov et al. 2003; Kisselev et al. 2003; Wilson and Nierhaus 2003; Kapp and Lorsch 2004). |